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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 19, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
1991 Audi 100 2.3L No Start, Poor Idle Quality, Cuts out, Stall VIN: WAUBC5444M
Car will not run good or idle good. It will not stay running without maintaining minor throttle response and keeping the RPM above 2000.
1989 Chevrolet S10 2.8L Lighting VIN: 1GCBS14R6K
The truck was dropped off, with the issue that randomly, when you turn the headlights on, the engine will die imediately, and you have to play with the headlight switch (on and off) a few times before the engine will start back up. When the engine dies, the he...
1992 Chevrolet Corvette 5.7L Poor Idle Quality VIN: 1G1YY23P4N
hey guys, Thanks in advance for any replies. I really feel dumb asking this but it is driving me crazy. Vehicle is a 1992 Corvette base model 5.7 with optic spark ignition. vehicle would run poorly most of the time. Vehicle is from a used car lot and they said...
1997 Chevrolet Tahoe LS 5.7L #2 & # 8 cyls VIN: 1GNEK13RXV
misfire goes away 2500 RPM no load roller cam rockers & springs good back off rockers air check cyls. good no crossover seepege in head gasket between cyls
2000 Chevrolet K2500 5.7L Unknown VIN: 1GCGK29R0Y
Truck starts to shake at 65 when braking shakes worse had rotors cut for lateral run of .007.Still has same run out after having them cut but I tend to rule it out because of the vibration at 65 without touching brakes.Also I pulled one of the front shocks and...
2004 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK29204
Hello everyone and thanks for reading. Im in over my head here because a buddy that talked me into working on his duramax. I have a 04 Duramax that the customer drove in for a no start issue. He can start it by using starting fluid. Rail pressure mirrored the ...
2008 Chevrolet Silverado 3500 HD WT 6.6L Excessive Emissions VIN: 1GCJK33688
hi i need some info from some duramax techs, customer is complaining of excessive black smoke when towing his travel trailer(9000lbs).no codes .my question is what are the specs for the injector balance rates.i have #1 0.1,#2 0.3 #3 0.3 #4 0.1 #5 0.6 #6 -1.1 #...
1996 Dodge Dakota 3.9L Misfire VIN: 1BTGL23X3T
This thing will take about a month or more and then it will set these codes, heads have been done all new injectors and rail assy due to rail flaking apart inside and injectors were full of crap, when running this thing at 2000 rpm you can watch the misfires c... Trouble codes: P0303 (Cyl 3 misfire), P0305 (Cyl 5 misfire)
2002 Dodge Stratus SE 2.4L No Start VIN: 4B3AG42G92
The customer has been tring to fix it hisself and gave up.It will start when its coold but after it has run up to operateing temp and you let it sit for about 5 to 10 minits it has no spark and no codes it has a crank signal, fuel press, but no spark, you turn...
2002 Dodge Grand Caravan Sport 3.3L speedometer VIN: 2B4GP44392
Odd one. First came on with output speed sensor code. Lights flickered and speeedo would bounce in gear not moving. I unplugged alternator and problem went away. Customer had warranty on alternator so he replaced it himself. Seemed to work for about 3 days, no...
2005 Dodge Ram 2500 Laramie 5.9L Misfire VIN: 3D7KS28C35
I need some major help from a diesel tech on this one.I dont normally do diesel work so i am unfamiliar with testing this system.There are no dodge dealers or decent diesel shops within 100 miles of us,so we are trying to learn these things because there are a... Trouble codes: P0201, P2146
1993 Ford Mustang LX 2.3L Cuts out VIN: 1FACP40M1P
Vehicle Came In had timing belt installed. After repairs to timing belt, found bad IAC valve. Replaced IAC Valve vehicle went for test drive everything was fine. Next morning upon attempt to start vehicle would start if throttle was held to the floor and woul...
1998 Ford Ranger Splash 4.0L MIL Lamp on VIN: 1FTYR14XXW
hello techs , have this ranger customer said last week went to start it cold and the tach.would not work then it would stick at 2,000 rpm , the engine would rev ok , i could not get it to act up,also they said the check engine light went on at the same time, i... Trouble codes: P0171, P0172
1999 Ford F-250 Super Duty Lariat 7.3L Injection VIN: 1FTNW21F9X
Customer complained this truck ran rough for about 2 miles and then cleared up. Seemed to crank longer when starting. This morning when I went to get it, it started and idled fine, but when I stepped on accelerator, it ran very rough and stalled and wouldn't s...
2003 Ford F-350 Super Duty Lariat 7.3L MIL Lamp on, lacks power VIN: 1FTSX31F53
Under hard load p1211 occurs and does not have power as it should. Changed oil and filter and also sucked, replaced oil within hp oil reservoir to assure good motorcraft filter and quality 15/40 oil. Passes koeo and keor self tests. ids movie shows icp volts... Trouble codes: P1211
2003 Ford Focus SE 2.0L No Start VIN: 1FAFP34P13
Hi guys I have this Focus here that the customer just bought. He bought it cheap as a no start. What we did was replaced the fuel pump and filter due to low fuel pressure being read on the scanner for the fuel rail pressure sensor. Our reading was 30 - 35 psi ...
2008 Ford Taurus SEL 3.5L Fuel Gauge VIN: 1FAHP24W58
I have an 08 Taurus with a fuel gauge problem. It has the saddle type tank. The gauge will read correctly when you start up then it will go towards full. So I don't myself or anyone else, it currently has about 1/4 tank of fuel. When I start it up it reads 1/4...
2003 GMC Yukon Denali 6.0L MIL Lamp on VIN: 1GKEK63U53
Greetings fellow techs, Got one here that has been eating our lunch for a couple days. 2003 GMC Yukon 6.0 came in with check engine light. Customer stated it lost power and wasn't able to accelerate. When we started it of course it worked OK. Codes stored were... Trouble codes: P0120, P2135 (Throttle Position Sensor 1-2 Correlation)
2002 Honda Accord EX 2.3L No Start VIN: 1HGCG55672
Car was towed in as a crank, no start. Car will crank well and makes over 125PSI compression on all cyl's. Has no spark or injector pulse. MIL does not come on with the key as it should. No communication with the DLC. Performed DLC check per procedure on Mitch...
2005 Honda CR-V EX 2.4L wheels VIN: THLRD68505
this car has been to the shop for the same vibation three times.on accelaration from 40 mph to 55 mph it vibrates at the front wheels and if you let go of the pedal it goes away.also after 60 mph it does not do it.i replaced both cv axels twice,engine mounts a...
2005 Jeep Grand Cherokee Laredo 3.7L No Start VIN: 1J4GR48K05
Can any one help me with this customer said he parked the car over night and next day the car won't crank at all came on tow truck lights come's on on the dash but no crank no codes but security light flashes all the fuses and relays are good but the key looks...
2002 Land Rover Freelander S 2.5L MIL Lamp on VIN: SALNM22232
I know everyone says run as far and as fast as you can from these cars, but if the customer wants to fix it, I'm willing to try, so I'm hoping to get some help. As to the evap leak, smoke test shows some leaking at intake man. vac hose fittings, we will be rep... Trouble codes: P0174 (sys lean bank 2), P0442 (EVAP small leak), P1473 (Variable Int. Man. Bnk 2 always closed), P1470 (Variable Int. Man. Bnk 1 always open)
2004 Lexus GX470 4.7L ABS pump VIN: JTJBT20X44
We have inspected this SUV twice with a thorough cleaning in between. There's a definite small brake fluid leak on the bottom of the ABS pump. The Toyota dealer has confirmed the leak. They propose to replace the entire master cylinder/ABS assembly, part numbe...
1993 Lincoln Town Car 4.6L head lights VIN: 1LNLM81WXP
Hello i have a 93 town car the headlights do not work. The tail lights and park lights come on when head switch is on, but no headlights. Headlights will work when u pull the dimmer switch in pass mode. This town car has digital dash and auto dimmer and auto d...
2003 Lincoln Aviator 4.6L Hesitation, Surge VIN: 5LMEU78H83
Hello Lincoln/Ford techs: I have this 03 aviator purchased at auction and sent to me by another shop. It had the common cyl 5 misfire and low compression, 50 psi. The customer had been informed of the possible valve failure and i confirmed it. I replaced the h... Trouble codes: P0108 (manifold absolute pressure circuit H input), P1112 (intake air temp sensor intermittent), P1117 (engine coolant temp sensor intermittent), P1125 (Throttle position sensor circuit intermittent), P1336 (Crankshaft or camshaft input signal to powertrain), P1000 (OBD II monitor not complete)
1994 Mazda B4000 LE 4.0L reverse VIN: 4F4CR16X6R
when appling reverse it takes a little longer than usual n then barks the tires when engagin.forward gears r all there ndrives good.has power to spare so its not gettin crowded r having to gas it to go n gear.just simply slams into reverse.been drivin it every...
2002 Mercedes-Benz c180 1800CC abs,bas
hello all , have a BAS light that is coming on for customer only, scanned for codes and only get C1025 which the scanner says is a stored code "CAN BUS : brake signal light CAN signal error" merc dealer replaced brake switch and we have replaced brake switch a...
2005 Mercedes-Benz CLK500 5.0L transmission VIN: WDBTK75G65
customer complaint was an intermittant check engine light ,, scanned trans found turbine speed sensor codes ,, y3/8n1 turbine speed sensor question is this a servicable item and does it have to be coded after installation most info says to change valve bod...
1997 Mercury Sable GS 3.0L Hesitation, Misfire VIN: 1MELM50U7V
This Sable came in running fine with a check engine light. Scanned for codes and found code p0343 (Camshaft Position Sensor 'A' Circuit High Input). I brought up a waveform and the square wave showed intermittent, but definite glitches. Installed new synchroni...
2000 Mercury Mountaineer 5.0L engine hesitation VIN: 4M2ZU86P4Y
my mountaineer 5.0 has hesitation only after vehicle is warm. no codes present. Happens mostly on acceleration. Have not changed fuel pump pressure is ok while at idle. It's only under a load when i get this problem.
2008 Mini Cooper Clubman 1.6L Exhaust Valves VIN: WMWMM33578
Hello folks! I am looking for direction on a valve-burning problem. 6 months ago, good customer came in with drivability problem- cylinder miss-fire codes all over the place, and we found no compression on #1. Vehicle had 62K miles. Removed head, found one bad...
1989 Nissan Sentra E 1.6L Excessive Emissions VIN: JN1GB21S2K
i got this nissan inop. the top injector cover removed and missing micro screw. found a micro screw for the injector cover and got the engine to run. engine was idling high @ 1200 rpm. checked for vacuum leaks and found none. played around with it for a week a... Trouble codes: 55 (nothing wrong)
1995 Nissan Altima GLE 2.4L shift solenoids VIN: 1N4BU31D7S
Car had been sitting for some time.we installed customers airflow meter after he had replaced the fuel pump and filter.Engine runs good now.But first time we attempted to drive it would'nt start out in first gear.set a p0750-shift sol.A ckt problem.we cleared ...
2007 Nissan Quest S 3.5L exhaust VIN: 5N1BV28407
had a customer come in today and asked me to look at the stuff coming out of her tail pipe. what I found was what looked like long black witch's hair. I am assumeing that its a filler from the muffler but have not seen this before. I found no TSB's on this. I ...
1998 Plymouth Grand Voyager Expresso 3.3L Steering VIN: 1P4GP44G3W
I am tring to get my van to go stright down the road it wants to pull left. I have recently installed the other outer tie rod. It had a little up and down movement in it. I had also replaced the drives axle due to the steering will moved back and forth at slow...
1991 Pontiac Grand Prix LE 3.1L fuel injector VIN: 1G2WH54T8M
car has no injector pulse has spark on all six cylds new ecm and module noid light test no good injector with key on has power on both side with injector pluged in or not
2008 Pontiac Vibe 1.8L Hesitation, Cuts out VIN: 5Y2SL65828
Reaching out the the automotive brotherhood for some help with this one. The vibe originally came in with an intermittent loss of throttle control and a code p0121 throttle pedal position sense switch a perfomance fault. The trouble tree and testing indicated ... Trouble codes: P0121 (Throttle position sense switch a performance), P2111 (Throttle Actuator Control TAC Throttle Valve-Stuck Open)
1987 Porsche 944 2.5L Cuts out VIN: WP0AB0940H
After car is hot, starts to cut out. Hotter days, worse. Replaced both crank angle sensor, fuel pump, fuel pump relay, and fuel filter. Have tried throttle switch, idle air valve, checked cap, rotor, and spark plugs. Drove car with fuel pressure gauge hooked u...
2004 Porsche Cayenne 3.2L Stall VIN: WP1AB29P94
Vehicle starts, runs for about 30 seconds, then stalls. If you hold it at wide open throttle and start it, it does the same. If you keep pumping the accelerator to WOT, it will stay running. Fuel pressure is 54 PSI. We do not have the equipment to adequately t...
2002 Toyota RAV4 2.0L Unknown VIN: JTEHH20V72
This vehicle has an intermittent problem that heppens when it is warmed up and stopped at a stop sign. Sometimes after you have made a complete stop and have sat still for a few seconds, you will hear a growling/groaning noise underneath, then the car will sur...
2009 Toyota Prius Touring 1.5L won't run VIN: JTDKB20U39
Changed oil, parked car across street,customer picked up in the afternoon would not run!!
2001 Volvo V70 2.4L Hesitation, Stall, MIL Lamp on
So its been about 4 years since I last installed a ETM. I used to get new ones from Taska Volvo and download software from the Vida laptop in our shop. Now I'm looking to buy a couple 2001 and 2002 V70s with bad ETMs. The particular cars are out of 7/70 ware...
2004 Volvo XC90 T6 2.9L HVAC, Cluster, Fuel door, Windows, Power seats VIN: YV1CM91H54
Hey all you volvo gurus hope you like this one! Customer complaint is that multiple systems are inop. Vehicle drives fine but all gauges are out, the HVAC system does not work although i have gotten it to work in the shop and then it doesn't turn off (even wit...
2005 Volvo XC90 2.5T 2.5L Charging
Car came in with battery light coming on after 2 minutes or so also has the urgent message for electrical fault. The car charges around 13.5 volts. The original alternator also had the same charge rate so I thought the feedback portion of the alternator was th...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 BMW 740iL 4.4L seat VIN: WBAGH8345Y
Ok guys, sorry for the delay on closing this thing. After trying the ignition switch, did not fix the problem. Ed from Illinois hit the nail on the head. Talked to the customer some more and found out that he took it through the drive through car wash and the ...
1986 Buick Skylark Custom 3.0L No Start VIN: 1G4NJ69L8G
Well this one is fix, need a ecm and ignition module. Knowing the parts where from az I didnt rule that out but want to make sure it was bad parts before changing them. The computer was also changed, it was a used one. The o2 sensor was new but not switching a...
2006 Buick Rendezvous CXL 3.5L Stall, No Crank VIN: 3G5DA03L56
Well everyone, the vehicle is fixed. Unfortunately, it took a trip to the dealer for a new PCM. Some of the replies were; 1) Clean the throttle body. This was one of the first things I checked as routine and it was OK. 2)Check for U codes in other modules. The...
2001 Cadillac Eldorado ETC 4.6L Stall VIN: 1G6ET129X1
Hi After three extended test drives it has not stalled. After reading all replies, I replaced fuel pressure regulator thinking at times it would leak to vacuum and flood engine. Released to customer and second day out it stalled again. I responed myself, but ...
2005 Cadillac STS 3.6L Drivers Door Latch VIN: 1G6DW67725
Thank you Nick from Wisconsin, the door latch hasn't been working for some time now, so Sunday I took the door panel off and with the Verus I was commanding the door actuator to open. I was getting voltage on both wires(green w/white and green w/black) at the ...
1993 Chevrolet Corsica LT 3.1L Stall VIN: 1G1LT53T5P
The ecm was faulty,after replacement the car does not stall. Waited a while to post repair to be sure it was done.
1999 Chevrolet Tahoe LS 5.7L 1-2solenoidvoltage VIN: 1GNEK13R7X
i cut the wire from computer to solenoid found computer was holding it grounded and slowly releasing.also did the test tree for cars also to help verify.replaced computer relurned passcode for key and it shifted fine.computer fixed the problem whiched stemed f...
1999 Chevrolet Astro 4.3L monitor status VIN: 1GCDM19W5X
thank you for all the replies. Richard from cali. sent this link. this was just what I needed. All "sub-tests" had to do with post cat o2 . replaced rear o2 and all monitors ran within 10 mile test drive.
2001 Chevrolet Silverado 1500 4.8L Steering VIN: 2GCEK19V61
Sorry for the delay in posting the fix , After putting multiple ps pumps on this vehicle and a steering box I put a brand new GM pump on it had a cost of 212.00 dollars I will never use an aftermarket rebuilt pump again and this includes AC delco the new pump ...
2000 Chrysler Sebring JX 2.5L No Start, Stall VIN: 3C3EL45H0Y
Thanks for all the greatr advice everyone. This one turned out to have a failed distributor. While we had spark (tested through an in line tester), the spark was very weak (orangish red, not blue-white). We removed the cap and the interior of the distributo...
2002 Dodge Intrepid SE 2.7L Drive-axles
i was pretty sure i had it isolated to the wheel bearing but just hadnt heard a hub assy sound quite like that. spinning the wheel while holding the coil didnt show anything either (first time ever). new RH bearing and the noise is gone. thanx all.
2007 Dodge Ram 1500 TRX4 5.7L No Start, Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1D7HU18267
Thanks to everyone who offered ideas. Turns out it was bad or contaminated fuel. Suspect diesel in the gas. Pumped out all the mixed fuel, about 80l off it, and put in 15l of fresh gas. After running it pretty hard on a test drive it ran really nicely and had ... Trouble codes: P0300 (Multiple cylinder misfire).
2004 Ford F-250 Super Duty Harley-Davidson Edition 6.0L truck has coolant lose issue VIN: 1FTNW21PX4
thank you for all the replies. i pulled heads and sure enough you could see where it was leaking through the gaskets. the black coating on the gaskets in these areas were gone. i have to beleive the combination of high boost and crapy gaskets would be to blame...
2006 Ford Escape Hybrid 2.3L abs pump motor VIN: 1FMYU96H36
We are going to close this one...thanks to Michael for good input.Although the pump run was beyond opening the door and while sitting, I feel that, as Michael indicated, low voltage may have been in play with this issue. We actually keep vehicle for 2 days..ro...
2007 GMC Yukon SLT 5.3L remote start and door locks VIN: 1GKFK13077
Circuits, modules, transmitters and recievers all tested ok. We opened drivers door to start buss communication, removed DSM fuse to power down remote control door lock reciever. Reinstalled fuse after 20 minutes and has worked ok for a month now.
2006 Honda Accord EX 2.4L unknown VIN: 1HGCM55896
Thanks for the help , it was indeed a inner cv joint . The set installed in the car must have been after market already . The set that we installed were high end after market new axles. So we decidet to order a set of low milage used axles from a wrecking yard...
2006 Hyundai Elantra GLS 2.0L lean VIN: KMHDN55D96
Thank you everybody for your replies. We installed a genuine dealer rear O2 sensor in this vehicle and it worked perfectly. We lost money on this job and will chalk it up as experience. No more aftermarket O2 sensors on Hyundais or Kias. Trouble codes: P0172, P2096, P2770.
1994 Mercedes-Benz SL600 6.0L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: WDBFA76E5R
i am closing this request because we haven't had the time to work on this car & time has run out. to bring everyone up to date we have sent the throttle plate out for reman & installed it, did the relearn & test drove it but its still doing the same thing. we ... Trouble codes: 4 (Hot wire MAF sensor bank 2/2 voltage too H/L), 8 (CMP sensor signal L5/1 not recognized).
2001 Mercedes-Benz SLK230 Kompressor 2.3L MIL Lamp on VIN: WDBKK49F71
OK guys, thank you all for taking the time to reply. As it turns out, the used ABS module I got also had data exchange problems. Data pattern was clean on the scope when first checked because my first ABS module didnt communicate at all. Data pattern was poor... Trouble codes: P200F, P202B, P2027 (CAN Message missing from N47-5).
2005 Nissan 350Z Grand Touring 3.5L convertible top VIN: JN1AZ36A75
We were about to replace the top control computer on this car for not opperating the 5th bow sliding motor actuators. We could actuate them in poth directions with the power probe and the computer would only pulse power to them for a second (not enough to even...
2005 Nissan Frontier LE 4.0L Mechanical VIN: 1N6AD07U25
thanks for your help, the problem was not related to solenoid or switch in the gear axle assembly, the locking plates were catching at times. sent the carrier assembly to a differential re builder. the fault was the spring that separates the locking plates. th...
2005 Volkswagen Passat GLS 2.0L Hesitation VIN: WVWCE63B55
I forgot to post my fix. Sorry. The flap motor is not addaptable. I readjusted the injectors, this helped alot. The vehicle starts and drives almost perfect. Still has slight hesitation on tip into throttle from time to time. This is getting better the more it...
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