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Prev Professional Automotive Repair Technical Discussions for March 14, 2013
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1997 Acura CL 3.0L drive belt VIN: 19UYA2252V
The A/C compressor is bad and customer would like to bypass the a/c system. The stock belt drives a/c & alternator. Anyone know what belt size will work to drive the alternator only?
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2001 Acura CL Type-S 3.2L 3rd gear VIN: 19UYA42741
Need help from acura trans techs. I have this cl type s that a customer brought in for us to have the trans rebuilt per 2 other trans shops, we removed it and sent it out for rebuild. Got trans back and installed...wouldnt get out of parking lot. Sent car to t...
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2008 Audi A4 Quattro Cabriolet 2.0L Tcc VIN: WAUDF48H78
The customer complaint the tach going up and down 200 RPM while maintaining constant speed, also feels slight bumping at same time. Did experience customer complaint. Drove the car w/VAG-COM connected, no fault codes. The TCC slippage was 95. After fluid chan...
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2008 Audi S5 4.2L Hesitation, Surge, Misfire VIN: WAURV78TX8
Hi guys, we have this 08 S5, can not find any info on this car so need some help here. It came in running a little rough at idle, at 2800 rpm, it would break up like it has a rev limiter. Noticed a lot of vacuum when taking off the oil fill cap, and high short...
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2001 Buick LeSabre Limited 3.8L Engine VIN: 1G4HR54K21
No codes. Sluggush pickup. Lugging. Vehicle came in with performance problems. All we had a chance to do was to check codes and run basic diag. Customer had to go to work. Checked with engine hot. Verified problem. Did not check fuel pressure. no time. All tes...
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2001 Chevrolet Silverado 2500 HD 8.1L MIL Lamp on VIN: 1GCHK23G51
Greetings, Truck has symptom of hard starting and fault code for camshsft position sensor. Easy fix, right? Not so fast. This part GM p/n [...] is not available anywhere, no longer supplied by GM, checked every aftermarket and internet source and the part n... Trouble codes: P0342 (Camshaft sensor fault)
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2004 Chevrolet Silverado 3500 6.6L cooling system VIN: 1GCJC33124
i have this duramax that is getting fuel into the coolant. i have removed the driverside valve cover thinking that this would be faulty injector cups like a ford might have, but after looking at the system i dont think thats possible. i dont work on many chevy...
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2007 Chevrolet Avalanche LTZ 5.3L Misfire VIN: 3GNFK12347
This engine only misfires on #5 cylinder when the computer commands 4-cylinder operation mode. Once it trips the code P0305, it won't command 4-cylinder operation and doesn't miss again. Not sure if you can feel the misfire when it acts up because it runs roug... Trouble codes: P0300 (multiple cylinder misfire), P0305 (Cylinder 5 misfire), P0171 (lean bank 1), P0175 (rich bank 2)
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2001 Chrysler Sebring LXi 2.7L Poor Idle Quality, Surge VIN: 1C3EL55UX1
This Sebring convertible 2.7 is having surge issues. At idle it just jumps from about 700 to 1300 RPMs. At cruise speeds and even on accel a little, you can feel the engine surging and not making smooth, even, power. Not like a misfire at all. Since it does it...
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1996 Dodge Ram 1500 Truck 5.9L No movement when warm VIN: 3B7HF13ZXT
I replaced the converter, front pump and associated seals. during repair I noted that it seemed like the torque converter didnt want to seat into the flex plate completely, possibly the paint on it causing interfearance, using screw driver on ring gear I was a...
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2002 Dodge Stratus SE 2.7L injector circuit fuse 24 VIN: 1B3EL36R22
customer came in for coolant leak. engine previously overheated.diagnosed replaced water pump, as some may know this is a large job, intake manifold valve covers timing chain.upon re assembly i have a no start condition. upon further diagnosis i have no spark ...
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2003 Dodge Ram 3500 Truck 5.7L Poor Idle Quality VIN: 3D7MA48D33
Truck will not idle warm or cold. Has a misfire with no CID misfires. Had to replace PCM, successful progam session. Can't get the counter enabled for the misfires. Has injector pulse on all cylinders, coils are all firing, plugs are getting fouled. No codes e...
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2003 Dodge Neon SXT 2.0L Poor Idle Quality, Misfire VIN: 1B3ES56C43
have this neon not idling correctly, on test drive feels like t/b one tooth off. idle is consistent with t/b off drb shows cam/ crank alignment at 10 degrees off. pulled belt to inspect for sheered keyways. belt was on and keyways good pulled cam sensor reluct...
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2006 Dodge Grand Caravan SXT 3.8L Misfire
i have swap fuel injectors change egr swap spark plugs change coil pack did a cly leak test has 165 psi compression looked for vacum leak and swap plug wires still misfire on #2cly when i smoke the intake the egr leaks even the new one Trouble codes: P0302
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1997 Ford Windstar 3.0L No Start, VIN: 2FMDA51U8V
We have a Ford Windstar Van that will Intermittently not start. Have fuel pressure, injector pulse and spark when the symptom occures. Have checked all grounds/powers going to computer.But while cranking the computer shows no injector pulse as per the scanner,...
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1999 Ford F-150 XL 4.2L Hesitation, MIL Lamp on VIN: 1FTZX1725X
Bank 2 upstream oxygen sensor never goes above 120mv bank 2 lean smoked intake and found intake gasket leak at rear of lower intake replaced gaskets and no change in oxygen sensor readings also short term fuel trim readings are positive 33on bank 2 and bank 1 ... Trouble codes: P1151, P1157
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2003 Ford Escape XLT 3.0L Poor Idle Quality, Hesitation, Misfire VIN: 1FMYU93163
TIPICAL FORD ESCAPE CAR COME IN MISFIR DO TO IGN DRIVERS ECM . DONE MANY OF THESE IN THE PAST. REPLACE ECM UPDATED COIL & SPARK PLUGS . ENG HAD A MISFIRE CYL # 4 & 6 still FOUND FRONT CAT TO HAVE BROKEN APART CLOGING UP REAR CAT . REPLACED DAMAGE CATS. ENG COM...
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2005 Ford F-250 Super Duty Lariat 6.0L Hesitation, Sluggish start VIN: 1FTSX21PX5
Vehicle starts right away but sounds /feels sluggish - when driving , has considerable hesitation (full 2-3 seconds)when decel & reaccel (such as slowing to a light that changes). Normal self test show no faults ,, when monitoring data noticed ... Load percent...
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2010 Ford Escape Limited 3.0L Pcm VIN: 1FMCU9EG4A
I am trying to replace the PCM however, my IDS calibrations seems not to have the 6F TRID file. I do not have access to protechnician.com and hoping some one could check my vin [...] and let me know what Cal file number I need to download. Thanx...
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2009 Honda Civic LX 1.8L aldl VIN: 19XFA16519
houdy fellow tecs . have this 09 honda with a ses lamp on tryed to scann with snapon, launch,genisys scanners no communication with any of the moduls. checked for activity at the aldl with ase wave tool .no reason why i should not be able to read the scanners ...
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2006 Hummer H3 3.5L Drivers Window VIN: 5GTDN13686
This vehicle came in to us with the problem being ABS Lt on,Trac Lt on,Ck Eng Lt on. Verified complaint. Brought into shop and hooked up to scan tool,No codes,except an evap leak small (P0442)Took for a test drive with scan tool,checking wheel speed..all good....
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1995 Hyundai Accent 1.5L No Start VIN: KMHVF11N4S
vehicle first came in with a over revving problem, traced problem to coolant temperature sensor, which fixed the revving problem. vehicle road tested great no problems except the cooling fan ran constantly when vehicle was running. customer was happy and did n... Trouble codes: 3153 (tps or harness failure), 3145 (coolent temp sensor or harness failure)
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2004 Hyundai XG350 3.5L steering VIN: KMHFU45E74
Customer had multiple power steering fluid leaks- Replaced small lines on Rack and Pinion w/OEM parts Replaced return line to cooler as well - OEM Installation was time consuming but no problems. When engine is started now- steering wheel shoots to and right a...
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2004 Jaguar XJ8 4.2L temp. & fan activation VIN: SAJEA71C94
After the radiator replacement, the customerreturned to the shop to report that the elec. cooling fan is coming on when she had not heard it run before during normal driving in moderate temperature weather. The fan also runs after shut-off when she says it nev...
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2005 Jeep Grand Cherokee Laredo 3.7L MIL Lamp on VIN: 1J4GR48K45
I replaced the cat assembly and B2S1 o2 due to codes p0152 and p0430. Cleared codes, and road tested to set monitors with no problems. Inspection passed and mission accomplished. Vehicle returned in a few days with identical codes. I would condem the cat with ... Trouble codes: P0152 (O2 voltage hi b2s1), P0430 (Lo cat efficiancy b2)
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2003 Land Rover Range Rover HSE 4.4L No Start VIN: SALME11433
Vehicle was towed in over night for NO CRANK/NO START. Cust says the key wouldn't turn in lock cylinder. Tow truck driver left interior lights on, battery was dead the next morning. Attempted to charge battery, wouldn't hold a charge. Replaced battery. Install...
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2004 Land Rover Discovery SE 4.6L Oil pressure VIN: SALTY19484
Tapping noise coming from left bank of engine, more to the rear and not necessarily in the top end (rockers) area and is pretty audible under engine as well at idle speed. Noise starts within about 5 minutes after cold starting, oil pressure had dropped to abo...
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2006 Land Rover Range Rover Sport Supercharged 4.2L Wheel Speed Sensors VIN: SALSH23446
Hello All, This car came from a local used car dealer with the ABS,Air Suspension, HDC and Parking Brake warning lamps on.The ABS module had codes C1A91-62frt left wheel speed sensorsignal compare failure and C1A94-62 thr same code for the right frt. sensor.Th...
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2004 Lincoln Aviator 4.6L Poor Idle Quality, Hesitation, Stall VIN: 5LMEU88H84
Vehicle came in with the complaint of intermittant stall. When checked vehicle runs a little rough at idle but otherwise is setting no codes and datastream reading(fuel trim, Tps, ect, Maf) all look good. when driving if you get on the throttle a little hard i...
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2007 Mazda CX-7 Touring 2.3L Engine Removal VIN: JM3ER29377
Hey all. This CX-7 4wd with the 2.3l disi turbo came in on the hook w/ no oil and a broken chain as well as some other goodies under the timing cover. We are going with a used engine which is getting here in a couple days. My question is on removal. Can this t...
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2007 Mitsubishi Endeavor LS 3.8L No Start VIN: 4A4MM21S77
vehicle does not want to start after filling it up with fuel. never acts up otherwise. you put gas in till it clicks off and even if you stop it before the pump shuts off when you go to start it, it will kind of start and immediately stall. then it will just c...
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2006 Nissan Armada SE Off-Road 5.6L Air ride suspension VIN: 5N1AA08B56
We repacced the air ride compressor with the customer provided part and the system still did not work. We then checked the fuses and found the 30 amp fuse.(Part of a tripple all in one fuse was burned out. The dealer doesn't stock it. What a great engeneering ...
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2007 Nissan Xterra X 4.0L Rear differential VIN: 5N1AN08W37
Okay got one for you Nissan guys out there. Customer's original complaint was that he had a vibration at 40 mph when going through turns and that it got worse after driving longer distances. The first time it was in our shop, we could not duplicate the symptom...
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2003 Porsche 911 Carrera 3.6L engine VIN: WP0AA29983
Greeting fellow technicians. Customer came in shorty after an oil change about 4 months ago with a check engine light almost directly after an oil change. We had put in 5w40 sythetic, and realized it should have been 0w40. So first thing we did was changed the...
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1986 Subaru XT GL-10 Turbo 1.8L No Start VIN: JF2AX75B2G
We are needing help with this xt with no start. its not getting fuel and will run on propane. i am getting a very weak injector pulse, cannot get a ms reading, but scope shows ecu is trying to triger injectors. have tryed 3 ecu,s, distributor, ignitor, injecto...
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2011 Subaru Forester X 2.5L Mechanical VIN: JF2SHCDC2B
On cold starts/driving,(we are in a cold climate), theirs a load "bang" on the 2-3 upshift, occurs most on light or no throttle. dealer has looked at car-no fault, client has asked me to check-all external looks good, no codes and I think the one TSB reprogram...
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1993 Toyota Previa DX 2.4L Comfort VIN: JT3AC11R8P
I have looked here on IATN and there is no result on the famous whistle these Toyota Previa makes when accelerating. We have done a lot of repairs on this van and would like to know if there is a confirm fix out there for this whistle noise on these Previa van...
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1995 Toyota Tacoma DLX 3.4L Excessive Emissions VIN: 4TAVN73F9S
We said we would smog the vehicle for client when done with engine. New readings with different engine, injecotrs, and O2 sensor were: HC@15mph 20 HC@25mph 19 [...],,,CO@ 25...00 [...].8 O2 both...3%.. Rpm 15 1683,,RPm 25 1644 Nox 15...
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1996 Volkswagen Passat TDI 1.9L Stall VIN: WVWHG83ACT
Vw TDI guru's. This engine shuts down when you accelerate it. When this happens, it is like the fuel shuts off.., goes into a Hard miss & dies. Semi hard to restart, starts better if given 1/2 throttle. Any Ideas ? Trouble codes: 00539 (fuel temp sensor g81), 00312 (Cat temp sensor 2), 00310 (Cat temp sensor 1)
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2003 Volkswagen Jetta TDI 1.9L No Start VIN: 3VWSP29M83
This is my neighbors car. It is well maintained and not abused. No drivability issues. She parked it at work and her husband went to start it and it wouldn't catch at all.I had a quick look and saw It wasn't getting fuel at the injectors so I put a filter on i...
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2004 Volkswagen Touareg V8 4.2L battery VIN: WVGCM67L94
Hey everyone, thanks for the help a head of time. I am trying to find the allowable parasitic drain for this vehicle. I was always taught .030 amp was the max, but have heard on a lot of these newer cars with all the gadgets etc it is more. When performing dra...
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2000 Volvo V40 1.9L MIL Lamp on VIN: YV1VW2550Y
Okay, this car got a timing belt replacement a few months ago, the tech that did it asked for the cam holding tool, but had to do without it. As a result, vehicle keeps pulling cam timing codes. We got the tool finally, and have used it on several other t-belt...
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Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1996 Acura TL 2.5L Pcm VIN: JH4UA2659T
Well I can kick my self. I want to thank all those who took time to offer help. After reading a few suggestions I decided to recheck my fire. (Just so you know) I had fire using the old fashion "non-hei spark tester." Well you guessed it, WRONG TOOL FOR THE JO...
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2009 Audi A8 Quattro L 4.2L Control Module Resets VIN: WAUMV94E59
I WANT TO THANK EVERY FOR THERE HELP, SO HERE IT GOES. DID A VOLTAGE DROP TEST ON THE GROUND SIDE FOR THE TRANS MODULE-TEST GOOD LESS THEN .10V WHEN THE PROBLEM WOULD OCCUR. CHECK THE BATTERY WITH MY SCOPE, BATTERY WOULD NOT DROP BELOW 10.3 VOLTS, TRIED IT...
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2006 BMW 760Li 6.0L long crank VIN: WBAHN03576
Thanks to all who replied. With such a high estimate to repair this long crank start problem we wanted to prove the high pressure pumps were the problem before proceeding with the repair. Roger's idea about blocking the vent ports for verification proved the p... Trouble codes: 276D.
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1997 Buick Riviera 3.8L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1G4GD2218V
Thanks for everyone's help. I had someone in the vehicle monitor the signal on the scan tool data. At idle, everything was normal. When put in gear (R or D) the signal would drop out, then return. When it dropped out, a loud bearing noise can be heard insi... Trouble codes: P0102 (MAF Low frequency).
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2004 Buick Rendezvous CX 3.4L Pw & Pl VIN: 3G5DA03EX4
Hello All... Sorry for the delayed update - hard to get more diagnostic time paid for by a used car dealer... I checked the entire rear dor - had continuity throughout -- and wires in the pillar were ok... Dan [...] hit the nail on the head... it was the wir...
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1997 Chevrolet Tahoe LS 5.7L No Start, Stall VIN: 1GNEK13R4V
thank you all for the replies the vehicle has not been back yet this was a crazy one like i said before when it messed up it would only do it for a couple min not long enough to do testing and no rhyme or reason i drove this vehicle for 2 days with nothing the...
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2004 Chevrolet Trailblazer LS 4.2L 4x4 VIN: 1GNDT13S84
i ended up trying a new switch on dash and it still acted up. luckily when it did act up i had scan tool hooked up and i could watch position switch signal at controller flickering all over the place. i replaced three wires from the shift motor to the controll...
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2009 Chevrolet Cobalt LT 2.2L Reduced power/Limp M VIN: 1G1AT58H79
This one is a stumper... The car originally was acting up on slippery driving. I have driven the car every day since I have opened the help request and we have had several snowy days and it no longer acts up.. I gave it to the customer last Friday... Dont know... Trouble codes: P2135 (c0561-), C0561.
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2001 Chrysler Sebring LXi 2.7L Engine VIN: 1C3EL55U61
Thank you for all the excellent information ,great help. Use thread lock and teflon tape work . Customer have driven car for over 10 days, no leak.
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2004 Chrysler Pacifica 3.5L MIL Lamp on VIN: 2C8GF68494
As everyone pointed out I purchased a Chrysler EGR valve and it works perfectly, thanks for all the help, just wanted to make sure I wasn't doing something wrong. Trouble codes: P0401 (EGR system performance).
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2007 Dodge Ram 2500 Truck TRX4 5.9L transfer case VIN: 1D7KS28C27
Hi, guys; I haven't had time to try any of your tips. As I said before it's my personal truck, so it goes on the back burner when we are busy (most of the time). If I can figure out something I'll post it later, Thanks! Steve.
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1998 Ford Ranger Splash 2.5L Poor Idle Quality, Stall, MIL Lamp on VIN: 1FTYR10C8W
thanks for taking time to assist. as suggested I made a test lamp from a sealed beam headlamp and went back through wiring. all circuits load tested good.started over from scratch.wired new power lead and ground lead from battery to sensor and put lab scope on... Trouble codes: P0102.
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2003 Ford Taurus SE 3.0L Steering effort VIN: 1FAFP53283
Customer has not come back for repairs on this vehicle yet, was going to put new pump in but she added some power steering conditioner to system and says it pretty much took care of it, so for now will not be installing pump, did however or a power steering pr...
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2004 Ford Taurus SES 3.0L Misfire VIN: 1FAFP55SX4
Thanks to all who replied. As most of you suggested it was the engine control module. The vehicle was missing for so long it took out the drivers for the ignition coils inside of the computer. Got a used computer, installed, reprogramed, and bingo!!! Car start... Trouble codes: P0351 (Ignition coil a primary circuit), P0352 (Ignition coil b primary ciruit), P0354 (Ignition coil d primary circuit).
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2009 Ford Escape XLT 3.0L Fuel Tank VIN: 1FMCU93G79
I WAS AWAITING THE RETURN OF THE CLIENT AS HE WAS AWAY ON A SKI TRIP FOR WINTER BREAK. HE TELLS ME IT IS WORKING FINE NOW. I GUESS IT WAS JUST SOME DIRT OR ICE. WE HAD BLOWN OUT SOME LINES AND INSPECTED COMPONENTS BUT DIDN'D REALLY SEE ANYTHING. WHO KNOWS, MAY...
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2012 Ford F-150 XL 3.5L Steering VIN: 1FTFX1ET4C
Thanks for all the input,..had we known this was a problem we may have equiped the trucks differently Thanks Again
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2007 GMC Yukon XL 1500 SLE 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKFK16367
Thank-you all so very much for the information. I quoted the lifters and VLOM (as well as engine replacment). With all of your information we are pretty sure its the lifters and VLOM. The customer has decided to park it for a few months to round up the money ... Trouble codes: P0201 (Injector 1 control circuit), P0300 (Random misfire).
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1996 Honda Civic EX 1.6L compressor VIN: 1HGEJ8148T
I checked just about everything, today I jumped the pressure switch and the AC compressor kicked on with no trouble , furthermore I checked once again the pressure and their was no refigereant , no signs of the u.v dye splattered around in engine compartment o...
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2002 Honda Civic EX 1.7L Stall VIN: 1HGEM22952
Thank you all a lot. You were right. It was two notches out of time. This site is awesome!
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2005 Honda Civic Value Package 1.7L intermittent misfire VIN: 2HGES16315
Thanks to all who responded,unfortunately my question was not answered.All I needed was injector specs.Prior to my post I adjusted the valves,did compression test,replaced the spark plugs(NGK plat.) and check injector`s resistances--but I do not have resistanc... Trouble codes: P0302.
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1999 Mazda 626 ES 2.0L Transmission VIN: 1YVGF22C1X
Thanks for all your input. We found a working good transmission with a warrenty and the car goes in all gears now. It's a wonderful thing. Thanks again
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2003 Mercedes-Benz S600 5.5L trunk release and door locks VIN: WDBNG76J93
I could hear the pneumatic pump trying to activate in the trunk. Took the unit out and found a burnt spot in the house where the plastic melted on too the motor also found some wiring inside the unit that was corroded and sheathing melted. presuming my thought...
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2006 Pontiac Grand Prix 3.8L inop when cold VIN: 2G2WP55206
Thanks for the replies on this one turns out the fix was to replace the battery and replace the starter relay. Found that if you tap the relay with the hood latch switch bypassed so the car thinks the hood is closed I could get it to startwith the remote clea...
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2003 Saturn Ion-1 2.2L Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G8AG52F53
A big thanks to every one for the replies. What made this problem so difficult was that it was diff. electrical. It acted as though some one was under the hood while driving and disconnecting the ECM every time I stepped on the gas. From 0 to 30 every thing is... Trouble codes: 1599 (all codes show up).
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1995 Toyota 4Runner SR5 3.0L Engine VIN: JT3VN29V4S
All replies were pulling us in the right direction thus solving the problem. Many thanks to all that responded.
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1998 Toyota Camry CE 3.0L MIL Lamp on VIN: 4T1BF28K9W
this one is fixed,after checking all the wires they were good,it was a bad circit in the pcm,removed and replaced the pcm with a new pcm from toyato with 2 new keys and a flash,very expensive.Thanks to every one who replied back it was very help full and put m... Trouble codes: P0500 (Vehicle speed sensor a fault).
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2000 Toyota Solara SE 3.0L MIL Lamp on VIN: 2T1FF28P0Y
thankyou very much for the replies. The owner of the vehicle wanted to take the vehicle on a road trip. When the light comes back on i will check everything that was suggested. I will update post if i catch the problem in the act and finnally repair the vehicl... Trouble codes: P1150 (A/F sensor ckt range perfocmance B2 S1), P1150 (A/F sensor ckt range perfocmance B2 S1).
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2003 Toyota Camry SE 2.4L Stall, Shuts off at 3000rpm VIN: JTDBE32K33
Ok, so after much more testing I found the last thing to do was replace all the coils (after swapping coils one by one).I replaced all 4 coils and presto! its fixed. thanks to everyone for suggestions and tips. Trouble codes: P0315, P0316, P0317, P0318.
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2005 Toyota Sequoia Limited 4.7L MIL Lamp on VIN: 5TDZT38A45
Thanks to all who replied. This vehicle kicked my butt. After much watching data when system was working, the pump would occassionally not pump enough pressure to the valves. I replaced the pump with an aftermarket and vehicle has been gone for a week with ... Trouble codes: P1442.
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1996 Volkswagen Jetta GLS 2.0L Poor Fuel Economy, MIL Lamp on VIN: 3VWSA81H0T
I found that the main engine connector at the side of the block had oil in it. I cleaned up the connector and terminals and the code finally clears and doesn't reset. Trouble codes: P0341 (Cam signal implausible).
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2006 Volkswagen Jetta TDI 1.9L Wipers VIN: 3VWDT71K26
The problem turned out to be the lin wire from wiper motor to vehicle electronics module. During my testing i did not notice wave form was garbled there was a signal but either not strong enough or missing some of the signal wire was almopst broke somewhere in...
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