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Prev Professional Automotive Repair Technical Discussions for July 25, 2013
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Help Request Answers
2001 Audi A4 Quattro 2.8L Cruise control VIN: WAUDH68D41
Cruise control will not set, this is my familys vehicle and we have replaced the abs module recently but the cruise did not work before then, we have replaced the air bag clockspring because of no horn condition, the turn signal switch assem. has also been rep...
2003 Audi A4 1.8L Transmission VIN: WAUJC68E43
Hello fellow technicians, we got this Audi A4 1.8T with an CVT 01J transmission, car history is that the transmission was repaired 1 year ago and that the car has not been moved or used during this period of time, now the owner went to pick up the car but the ...
2007 Audi Q7 Premium 3.6L MIL Lamp on VIN: WA1BY94L97
Thank you for reading this and any input you may have in advance. The car was dropped off at the body shop to have the front bumper cover painted.After the job the car run poorly and the check engine light was on with code p0088.The body shop took the car to ... Trouble codes: P0088
2008 Audi A6 Quattro 3.2L blower VIN: WAUDH54F18
Please Audi Techs, let us know if you have run into something like this. I spoke to the local Audi dealer and was told there is no specific problems that they encountered. Customer mentioned that he left sun roof open and was rained in. All controls on counsel...
2003 BMW 540i 4.4L Poor Idle Quality, Misfire VIN: WBADN63443
We have this BMW in our shop and its turning out to be a nightmare. It has a slight misfire at idle and as you increase the throttle the misfire gets worse and at times the idle starts to surge. Snap throttle under load it has a major misfire. I've cleared the... Trouble codes: 62 (Misfire Several Cylinders), 50 (Misfire Cylinder 1), 51 (Misfire Cylinder 5), 57 (Misfire Cylinder 2), 53 (Misfire Cylinder 8)
2004 BMW X5 3.0i 3.0L MIL Lamp on VIN: 5UXFA13594
Car came in with these 2 codes ( P0171, P0174). Found vacuum hoses and connectors brittle. The crankcase valve was replace cus the snorkel was split. Cleared codes, test drove to reset monitor and after 102 miles of road testing MIL light came with the same co... Trouble codes: P0171 (Lean condition), P0174 (Lean condition)
2006 BMW 325i 3.0L Heater VIN: WBAVB13546
Help BMW tech please! A 2006 325i had the upper radiator hose replaced in our shop, tech followed "12 minute key on, engine off, temp at 84 and low blower" coolant bleed procedure twice then drove the vehicle. The yellow temp warning light came on, then the re...
2009 BMW 323i 2.5L OBD-2 Plug VIN: WBAPG73579
Dear BMW Friends, we are using the BMW ISTA diagnostic with the Factory ICOM A. We tried to read out OBD-2 plug, but ISTA said can not read Vehicle VIN #, therefore no fault code read out possible. We back-probed OBD-2 plug and have all Inputs. We connected IS...
2004 Cadillac SRX 4.6L Mechanical VIN: 1GYEE63A74
Calls for removal of engine and transmission together after pulling T-case. Has anyone pulled one out the top without transmission? thanks
1992 Chevrolet C1500 Cheyenne 5.7L Converter VIN: 1GCEC14K6N
Hey Guys, I rebuilt this transmission for a hot street truck and mysteriously lost lockup function. This is more than a simple wiring issue. Does someone have an explanation of the hydraulic system in detail so that I can follow the hydraulic circuits. TransGo...
1997 Chevrolet S10 4.3L Brakes VIN: 1GCCS14X5V
Replaced leaky brake line from proportioning combonation valve all the way to rear of vehicle were it splits off and goes to both rear wheel cyls.Now I have a rock hard pedal and brake lite on and cant get fluid out of bleeders @ rear wheel cyls.and have no re...
1998 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: 1GNDM19W5W
currently po300 multiple cylinder misfire, check injection system :found faulty injectors for bank 1, replaced new fuel injection system all the injectors and assembly, clear codes and retest[ engine running rough,at this time po 300 is on. perform compression... Trouble codes: P0300, P0302
2003 Chevrolet Silverado 3500 LT 6.0L front fuel tank VIN: 1GBJC34U43
Thanks in advance for any help. We got this truck towed in to us - no start condition - found front tank empty, but fuel gauge said it had fuel in it. We replaced pump and gauge readings seemed to be where they should be, so we shipped it. Truck was returned t...
2003 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on VIN: 1GCEC14X93
hello thanks for any help I have a 03 chevy 1500 pickup with 4.3l engine this thing is misfiring on hard acceleration ive ruled out the maf sensor ignition coil ignition module distributor distributor cap plugs and wires fuel injectors cats fuel pressure while... Trouble codes: P0300
2004 Chevrolet Silverado 1500 LS 5.3L steering system VIN: 2GCEK13T34
Hi all, this one has me stumped as I haven't heard this before. Sounds like a brake pad squeal high pitched, but only makes noise when running and you turn the steering wheel on dry pavement a quarter turn either way, then like back off an eighth turn. Can hea...
2004 Chevrolet Tahoe Z71 5.3L forward shifts, 4kcd/9kcd
Customer came in with bad transmission (slipping, burnt fluid)and said he had another transmission from a wrecked truck. His truck is an '04 Tahoe Z71 and the other transmission is from a 2000 Silverado Z71. I noticed that the electronic box on the shifter stu...
2006 Chevrolet Silverado 2500 HD LT 6.0L speedo, odometer,cruise control VIN: 1GCHK24U06
Hello Group, This is my own truck that was sitting for a month or so and my daughter drove it and the speedo, odometer and cruise are not working. I do have speedo output info with scan tool. I have one cluster code B0540 but I have no diagnostic info on it. T...
2008 Chevrolet Express 1500 5.3L Poor Idle Quality, Cuts out, Misfire VIN: 1GCFH15448
Bogs down on acceleration, fouls spark plugs, O2 sensors hung on rich. Have cleaned throttle body and it helped a little; removing the air filter also helped, but it still bogs down. Converter temperatures are similar at about 1000 degrees F. Driver's side con... Trouble codes: 300
2008 Chevrolet Silverado 3500 HD LT 6.6L no crank VIN: 1GBJK39628
this is a tow truck that has been to multiple shops over the last couple of owner begged me to take this job against my better judgement i said yes.issue no crank, if you manually engage starter relay truck starts and drives, com codes all over.start...
2004 Chrysler PT Cruiser Touring 2.4L Stall, MIL Lamp on VIN: 3C4FY588X4
Hi iatn member... I have this 04 pt cruiser comes back 2 times with the code p0032, p0038... After followed mitchell on demand trouble shooting steps, i got confused at step #4: step 4 procedure: disc. O2 sensor harness, ign on engine off, actuate the o2 heate... Trouble codes: P0032 (Heated o2 sensor circuit s1/1), P0038 (Heated o2 sensor circuit s1/2), P0508 (Iac sense circuit)
2002 Dodge Grand Caravan EX 3.3L out put sensor VIN: 2B4GP44312
now its back again with the output speed sensor code watching the scaner the rpm come and go. i have overlayed new wires from the sensors to the tcu thinking that the wire may have a brake in the wire but it has made no difference. i have also replace the spee...
2002 Dodge Grand Caravan EX 3.3L No Start VIN: 1B4GP45312
Problem Child---Van came in because owner states dash lights were flickering while driving and the blower motor runs on low even with the HVAC shut off. No problems found. Everything worked fine. Wiggled wires, banged on dash, checked for codes. He took it and...
2005 Dodge Ram 2500 Truck SLT 5.7L Poor Idle Quality, Misfire VIN: 3D3KS28D75
ok, this truck came in about a week ago with complaint of wouldnt idle and thought had blown head gasket, after testing found cylinder 1 and 8 dropped the intake valve seats and destroyed the pistons in both cylinders, advised new engine was required, customer...
2007 Dodge Grand Caravan SXT 3.8L abs light on VIN: 2D4GP44L27
hi everyone and thanks for at least looking at this. i'm lost here.the abs light is shining bright and got a code off my scan tool 29FE-code reads "J1850 bus short low" this is under stored codes, active codes it passes all tests. checked all computers and i c...
1998 Ford Explorer XL 4.0L reverse VIN: 1FMZU32X3W
thanx in advance i bench built this trans and im not an expert all forward gear work fin but no reverse the original problem before build upon teardown found broken band overhauled trans all new bands, clutches, ect.Any imput would be greatly appreciated. Pres...
2002 Ford E-350 Econoline 5.4L Vehicle rolls too much VIN: 1FDWE35L62
This is a fleet truck that has an excessive roll. It is a E350 with a box on the back. When turning the wheel the vehicle body seems to roll in the opposite direction excessively. When comparing this vehicle to others in the fleet that are identical, this vehi...
2005 Ford Freestyle SEL 3.0L CAN Communication VIN: 1FMZK02115
This van was acquired at auction and initially drove out fine. Made (2) 20-30 mile road tests without any indication of a problem. Went to pull it in the shop a couple of days later, and now have MIL, 'Check Traction Control', ABS, and 'Service Vehicle' lights...
2008 Ford E-250 4.6L abs VIN: 1FTNE24WX8
This van engages the abs when coming to any knid of stop, it feels like a wheel speed sensor thats dirty, there are no rear wheel speed sensors in this system.on the data stream i have pids for all four wheels . I was wondering if anyone knows how this system ...
2008 Ford F-250 Super Duty XLT 6.4L No Start VIN: 1FTSW21R58
Replaced High Pressure Pump (HPP) 12000 miles ago with a ford reman. Truck was towed in and cranking pressure was about 2200. Sat over night and started the next morning. After it was warmed up it was hard to start. When scoping the injectors it showed 3, 7 & ...
2008 Ford F-350 Super Duty XL 6.8L Starter VIN: 1FDWF35Y08
Got a real head scratcher! its starts fine cold. If you let it run and get some heat in the motor the starter turns the motor over slow on restart. If you drive it for like and hour or so and shut it off then try to restart it the starter just barely turns the...
1996 Honda Accord LX 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCD7239T
Misfires intermittently. While misfiring, #1 does not contribute, and the strange thing is that it will not hold an idle at all unless #4 spark plug wire is removed, you put #4 wire back on an it will stumble, then stall. You can do this at 2000 rpm and watch ... Trouble codes: P0108, P0300, P0301
1999 Honda Accord LX 2.3L Control Head VIN: 1HGCG554XX
Good Day All I Have the aforementioned vehicle here, the AC control head is unresponsive upon cold start up. The blower blows but the vents don't change direction and the indicator lamps do not light up. After a few minutes everything starts to work and the s...
2001 Hyundai Sonata GLS 2.5L No Start VIN: KMHWF35V41
this is the Hyundai Sonata from hell. the only time it is hard to when you gas up ($20.00) or more if it did not happen to me i would have thought the customer was nuts. we have left the gas cap off for at least 1/2 day to see if fuel bleeds back no l...
2011 Hyundai Santa Fe SE 3.5L Mechanical VIN: 5XYZHDAG4B
I have a bad oil leak from the Bell housing area of this unit. It is warranty but Dealer is a ways away. Hyandai is telling me the oil sender unit is the problem, running down the intake valley. I can not for the life of me locate it. Alldata , Mitchell and Di...
2006 Infiniti M45 Sport 4.5L Hesitation, Cuts out VIN: JNKBY01E16
Hi members, I think I need help on this monster. Customer brought car with MIL on, and said car sometimes stalls out when driving not on stop sign, especilly when weather is hot. After engine dies out he has to wait about 20 minutes to start back up. I checked... Trouble codes: P0340 (Cam position sensor 1)
2001 Land Rover Discovery Series II SE 4.0L Excessive Emissions, Misfire VIN: SALTY15441
I have a tough one here. I have a cylinder number 7 miss fire. I thought was a fualty injector. replaced injector and problem still exists. I checked the wire from the pcm to the injector and the wire is good. I also checked with a noid light and light does no... Trouble codes: P0307 (cylinder number 7 miss fire), P0207 (cylinder number 7 injector circuit open)
1999 Lexus GS300 3.0L abs module VIN: JT8BD68S6X
Have a noise from abs control module on brake application. Will make a chirping noise even with engine off. 3-6 chirps and will do it every time usually after pedal released. No tsbs that I could find. Is this a common problem and-or what is the fix? I have tr...
2003 Mazda Tribute LX 3.0L Misfire VIN: 4F2CZ94153
This little ole Mazda was brought to me by another shop with a steady misfire on # 4 & 6 cylinders. They had done coil packs, injectors, & compression check & no matter what they did they miss stayed steady. We performed spark test on missing cylinders with re... Trouble codes: P0304 (4 cylinder missfire), P0306 (6 cylinder missfire)
2007 Mazda CX-7 Touring 2.3L TURBO noise VIN: JM3ER29357
Owner took to a transmission shop and they diagnosed to be bad turbo. I found very little motor oil, and put oil in drove into shop and can hear a noise from turbo area and owner says when warmed up and driving has lots of smoke and took to transmission shop. ...
2004 Mercedes-Benz CLK320 3.2L fan operation VIN: WDBTK65G94
Morning techs! I seem to only have to post here when i get a mercedez or bmw but i appreciate any help in advance. We have a tow in for an overheat and I looks as if the fan is not working checked all powers and grounds, fuses. They seem to be good but i can't...
2003 Nissan Altima SL 3.5L cat and evaptest inc VIN: 1N4BL11E13
Can not get all srt to set to pass emission. Inspection. Abs. Tc slip lights are on. Been driveing for weeks. Keeping fuel from 1/4 to 3/4
2006 Pontiac G6 GT 3.5L No Start VIN: 1G2ZH15806
This car is a very intermittent no start. It's back to us for the second time. Last time it did crank, start to fire, then stalled. The U7300 is identified by the Modis, there is nothing in MOD at all, haven't found anything here either. Car acted like the VTD... Trouble codes: U7300 (PCM Communications lost), U2105 (BCM/VTD lost comm to PCM)
1981 Porsche 911 SC 3.0L Poor Idle Quality
Hi, thanks in advance. I am looking for a accurate ignition diagram for this 81 porsche. I have been chasing a poor run and found my o2 relay pulsing at idle and i found that power to this relay is supplied by the rpm relay. This is were i was lost in my searc...
1987 Porsche 924 S 2.5L No Start VIN: WP0AA092XH
Vehicle towed in for a stalling condition which led to a no start. Upon arrival I found there was no fuel pressure and checked voltage and ground at fuel pump. There was no power at the fuel pump. I manually powered the pump to see if it would run and it did. ...
2007 Subaru Forester X 2.5L #3 cylinder VIN: JF1SG63677
Hi techs, Would love to have feed back on this situation. Car came in running rough, misfire found on cylinder 3. After confirmiing good fuel and spark, ran compression check to find the needle had very little or no movement. The valve clearence is also in sp...
1993 Toyota Pickup DLX 2.4L Mechanical VIN: 4TARN13P3P
check for leaks no leaks recharge system and a lot white smog come from tail pipe and engine stars to running rough need help tanks
2004 Toyota 4Runner Sport 4.7L Transercase shift actuator removal VIN: JTEBT14R84
Hello Guys, This may be a stupid question to some Toyota techs out there. I am a Honda / Acura specialist shop and have friends 2004 Toyota 4 runner V-8 AWD. The transfer case shift actuator seal is leaking and the actuator will not come out. After releasing t...
2011 Toyota RAV4 2.5L a/c compressor VIN: 2T3BF4DV0B
vehicle came in with intermittent ac issue compressor only works once in a while, pressure is good filled by ac machine, did flush, entire system clean, switched ac compressors worked at first for a few hrs of testing then customer brings it back next day same...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2008 Audi A4 Quattro 2.0L A/C performance VIN: WAUDF78E28
Current draw on the old fans was 13/6 A. The current draw on the new ones is 5.9/1.5 A. That explains everything. Now the fans don't cycle on and off when the A/C is on. A/C is working strong like it should. Hoping this info help next tech.
2008 BMW 328xi 3.0L all VIN: WBAWC33598
Thanks for responce-as all stated-the wire at fuse box was bad, recall at dealer has been doone, no fault since. thanks for the help.
2013 BMW X3 xDrive28i 2.0L starting ,no locking system radio ntot working VIN: 5UXWX9C51D
Sorry for the delay, I was repeatedly told that I needed a BMW factory scan tool or equivalent to take vehicle out of transport mode first. So after discussing options with the customer he decided to send to a local BMW specialist. Thanks to all who replied, J...
1997 Buick Regal LS 3.8L Cuts out, Stall VIN: 2G4WB52K5V
Let me start by thanking everybody for all of the suggestions. In the end the fix was a bit muddled. Not sure which was more of the problem the shorted wires to the crank sensor or the partially fried PCM. I thought it strange to have a "good" signal from the ...
1967 Chevrolet Impala 5.3L don't know VIN: N0TAVA1LBL
Thank you to all that replied to the help request. As many indicated, the calipers were the likely cause. It is hard to prove, but we got OK from customer to replace calipers. After finding someone who actually had rebuildable cores or rebuilt units, we rep...
2002 Chevrolet Tracker 2.0L crank sensor VIN: 2CNBJ13C52
Thanks and job done, no short cuts Thanks again. Pulled trans, and removed sensor and replaced
2009 Chevrolet Express 2500 4.8L brake lights and rear turn signals VIN: 1GCGG25C89
ok this is fixed...customer installed single filament instead of double filament bulbs,i didn't check that first because he told me he replaced the bulbs already. I know better but it happens. I want to thank everyone for your time and helping me out.
2001 Dodge Intrepid ES 2.7L high idle speed VIN: 2C3HH46R11
found where somebody had previously cut iac wiring near ecm, and spliced a complete harness in that would reach all the way to iac valve. then for some reason coiled that harness up in to a ball and taped it to wire loom near cruise control. I was working with...
2000 Ford F-250 Super Duty Lariat 7.3L Clutch VIN: 1FTNF21FXY
Thank you everyone for the help. Sorry it took so long to close the request, but I've been slamed for the last couple of weeks. I knew it had to be an air issue. This is the system with no bleeder screw, so gravity and vacuum bleeding were out of the questi...
2002 Ford Explorer Eddie Bauer 4.6L Poor Idle Quality VIN: 1FMDU74W92
I had to take this to Ford to do an as built flash. Michael gave a good idea that I will try next time I have a problem like this: Unplug the computer and then turn on ignition and plug in the computer while the ignition is on, and it might wake up the compute...
2006 Ford E-250 4.6L Misfire, No power VIN: 1FTNE24W76
2007 Ford Edge SEL 3.5L ABS/Master cyl. VIN: 2FMDK39C67
Thanks for all who replied to this posting! After battling it a little more, I remembered the customer mentioning that the other shop installed a new master cylinder. I asked the customer if he happened to have a part number on his previous invoice. It turns o...
2008 Ford Explorer XLT 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMEU73E08
Thanks guys for the good replies. The ignition coils causing noise was a great idea I did actually get it to act up in the bay and there was a lot of hash and noise on both tps signal wires at the pcm. I then back probed at the sensor and signal was clean and ... Trouble codes: P2110 (p2107-), P2107.
2001 GMC Sonoma SLS 4.3L MIL Lamp on VIN: 1GTDT13W11
Time is up to close this. We soaked in a can of 44K thru the PCV line, with an orifice so it took a couple of minutes for the 44k to get in, let it soak, it feels a bit smoother, but no change on the misfire counts. Remember this is a new MFI not CFI, so pop... Trouble codes: P0300 (p0304-), P0304 (testing and results).
1998 Honda Civic EX 1.6L compressor VIN: 1HGEJ8249W
I never did figure out what was going on but I know that replacing the compressor and expansion valves would have cleared whatever this was. my refrigerant was comming straight out of an o`reillys 30 lb drum through a recovery only station. all my charge attem...
2001 Honda Civic LX 1.7L steering VIN: 1HGES16591
As always, the responses were great and were received in a timely fashion!! The car came back yesterday to recheck the noise and a new problem occurred--the passenger's side floor board was soaked. I repeated a similar road test and turned hard to the left and...
2001 Jeep Cherokee Sport 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4FT48S61
Thomas and Robert, you were right about the valve rotation. We treated the engine with "Seafoam" brand solvent to decarbonize the engine, generally following the procedure in bulletin 09-003-03. When we were done the misfire counter stayed close to zero ... Trouble codes: P0301 (misfire cyl 1), P0306 (misfire cyl 6).
2007 Jeep Compass 2.4L MIL Lamp on VIN: 1J8FF47W37
Well after much research we decided to flash pcm with newest updates all is fine the car has been out over a week with no problems. thanks for the replies Trouble codes: P0391.
2001 Kia Sephia LS 1.8L MIL Lamp on VIN: KNAFB12101
thank you very much, the information I received was very good , I learn a lot, I was ready to change the computer and I was checking the continuity of the wires from the aldl and o2 sensors and found the color of wires not matching and behold! the connectors o... Trouble codes: P0130, P0131, P0134, P0133.
2006 Kia Rio5 SX 1.6L MIL Lamp on VIN: KNADE16356
first we tried 2 used pcm's that the customer had shipped to us,after reflashing them we found out that they were reflashing with the wrong info.we finally talked the customer in to letting us install a new pcm.installed a new pcm from kia and had it flashed,p... Trouble codes: P2096.
1995 Lexus ES300 3.0L No Start, Stall, Misfire, MIL Lamp on VIN: JT8GK13T5S
OK my diagnostics were accurate and the ECM was the cause of the spark outputs going rogue. Replaced the ECM and all is well. Rechecking scope patterns after the ECM replacement I get .5-1volt on all ignitor IGT inputs and good scope flyback patterns on all ig... Trouble codes: P1300, P0325, P0330.
2003 Mitsubishi Eclipse GTS 3.0L Hesitation, Cuts out, MIL Lamp on VIN: 4A3AC74H83
thanx for responses customer hasnt returned yet had to go out of state Trouble codes: P0300 (random misfire).
1995 Oldsmobile 98 Regency Elite 3.8L cam/crank sensor VIN: 1G3CX52K4S
Ok, so the owner decided to drive it like it is instead of attempting a new pcm, seems to be the issue, also just for information, Tech line advised that this is a 95, with OBDII plug with OBD programming, so if a miss occurs the pcm can only interpret it as a...
2008 Saturn Aura XR 3.6L Mechanical VIN: 1G8ZV57748
Thanks to all who replied. Job is done successfully without lift. Used engine support on front & rear of engine maybe adding 1hr of additional work. Actually I don't know if dropping engine & trans w/sub-frame would be much easier. Aligned 4 wheels when done. ...
2005 Subaru Outback Limited 2.5L front brakes VIN: 4S4BP62C35
adjusted break pedal and she came back today saying it has not locked up since , so I am hoping that did it . thanks to everyone that gave a helping hand.
2002 Toyota MR2 Spyder 1.8L Compressor VIN: JTDFR32042
Sorry for the late close on this one. The customer decided first to try to source a used sensor from some other MR-2 enthusiasts. After several failed attempts at that, he opted to replace the compressor. That was the fix, with the new compressor the AC fun...
2003 Volkswagen Transporter 2.5L No Start
Kurt, Dan thanks for responding. Must have been a bad day. When I re-read the service info the next day I noticed that it said to set injector pump timing marks up when crankshaft at 82mm before tdc. (the pump timing was retarded approx two teeth) Set up as sp...
2006 Volkswagen Beetle 2.5 2.5L Misfire, MIL Lamp on VIN: 3VWSG31Y46
Well thank you ladies and gentlemen this car is fixed! It turns out his car was vandalized and there was some unidentified liquid and stuff in the fuel tank. Now to try to make this helpful to others… The car came in with a one eighth tank and although the ver... Trouble codes: P0300, P0301.
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