Automotive Technicians Technical Discussion and Fixes for Sep 23, 2014

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	Help Request	Answers
	2001 Audi A4 1.8L Engine VIN: WAUDC68D01 The car is running excessivly rich the trims on channel 32 are +9 on idle and reaching up wards of +22 for partial throttle. If it runs in the shop it smells of excess unburnt fuel.	View
	2008 Audi A4 Quattro 2.0L Intake Valve VIN: WAUDF78E68 Hello everyone! 2008 A4 Quattro with a 2.0 BWT was towed in from the dealer. Customer states the car just stalled out of nowhere. Was running fine, then quit. It would not restart. She took it to a dealership, and they performed a compression test. They wished...	View
	2011 Audi Q5 Premium Plus 2.0L Leak VIN: WA1LFAFP4B Ok, not alot of exp with an Audi this new. Came in last week running very badly. Tech working on it found the crankcase breather valve/oil separator was bad. Changed it and runs great. Came back in with a really bad oil leak. IT'S BAD!!! Coming from inside the...	View
	2008 BMW X3 3.0si 3.0L Surge VIN: WBXPC93428 Surges under light load, any gear. Data on exhaust position is -100 cr Does respond opposite of intake, however, neither one shows any adaptation. Replacing solenoid would probably be redundant. Any ideas? Trouble codes: 2A87, 2A15	View
	2008 BMW 328i 3.0L No Start VIN: WBAWB33538 This car came in with crank no start condition, pulled codes and able to communicate with all modules, except the DME. Also noticed that with the key on the fuel pump is constantly running. I tried unplugging the dsc and fuel pump module and still can't commun...	View
	2008 Buick LaCrosse CXL 3.8L Bcm This is a different kind of post for you Good Wrench dealer guys. Have done lots of programming with my Tech2 and Tis to Web subscription. As y'all know, when you program a BCM you get one shot at getting the vehicle options right or you buy a new BCM. Most of...	View
	2007 Cadillac SRX 4.6L Mechanical VIN: 1GYEE63A07 OK GUYS I HOPE YOU CAN HELP AND THANKS FOR THE TIME This car came in with oil all over the bottom of the pan and cust. complaining of a oil leak . So first i cleaned it up and let it run on the lift for 30 mins. in gear and it did not leak a drop . Next i test...	View
	1993 Chevrolet Corvette 5.7L No Start VIN: 1G1YY33P8P we got this car from another shop,engine shuts off after 15 minutes running,no spark,no injector pulse,wont start untill next day,when it starts we have 12v,good ground and 5v references to distributor and good signals from distributor,as soon as it quits we h...	View
	2009 Chevrolet Traverse LTZ 3.6L Incorrect Vent & Temp. VIN: 1GNEV33D79 HVAC Vent Temperature Control is not functioning properly. I have determined the Mode Door Actuator is no good as I have removed it, pulled the cover off & found a burned spot on the circuit board. I could smell it when removed. While removed I reached up behi...	View
	2010 Chevrolet Express 2500 4.8L Misfire, MIL Lamp on VIN: 1GCZGFBA0A even pulled valve cover to check valve springs - did cyl leak down - only 10% leak on #1 . did see tsb for valve cover. but blocked vacuum to it still had miss. did cylinder balance test - #1 did not change. used tech 2 to perform injector balance test also. a... Trouble codes: P0121, P0300, P0172, P0175, P0301	View
	2001 Chrysler PT Cruiser 2.4L Stall VIN: 3C4FY4BB11 i replaced belt in march had 38000 thousand miles on it. came in at 145000 and check eng. light was on cam crank sensor code p1391. replaced both sensors and rechecked timing with a waveform.i got the readings off of both sensors at the computer and it seemed ... Trouble codes: P1297	View
	2007 Chrysler Aspen Limited 4.7L Instrument Cluster VIN: 1A8HW58N47 Hey guys, this one is my wifes car. She came in claiming that the instrument cluster was acting funny. First thing i noticed was the speedometer and tach would intermittently fall out and the warning lights would illuminate. I got the message no bus. Scanned t...	View
	1996 Dodge Dakota 3.9L MIL Lamp on VIN: 1B7GL23X0T This truck came in for a check engine light, code P0441 Evap purge monitor failure. It has been to several shop with several parts replaced and still has the same problem. I found the test procedure from Chrysler is flawed. It asks to check vacuum to the purge... Trouble codes: P0441 (Evap purge flow monitor failure)	View
	2002 Dodge Grand Caravan SE 3.3L Control Module VIN: 1B4GP24302 Hello, Have a question, is there any thing else that the tcm looks at besides the solenoids and switches in the sol pack to decide whether to apply control power to the eatx relay in ipm. The 86 term powers very briefly on key up then off. I have verified the ...	View
	2010 Dodge Journey SXT 3.5L engine VIN: 3D4PG5FV0A Coolant is leaking out of the transmission housing where the engine block meets the trans. Like a freeze plug has rotted on the rear of the engine more towards the front of the vehicle. It is below the head gasket and leaks out when pressure is applied. has an...	View
	2005 Ford F650 7.2L parking lights VIN: 3FRNF65R85 Replaced 30 amp fuse and 15 amp fuse and cab and box lights working. Also replaced headlamp switch due to it falling apart. All lights working but parking lamps won't shut off. Is there a lamp control module or relay or GEM module and if so where is it located...	View
	2007 Ford Taurus SEL 3.0L Cooling Systems VIN: 1FAFP56U27 Members, I have a strange one hear. Intermittently, the engine coolant temp will spike to hot, then high speed fan will come on, and temp returns to normal quickly, total event is 15 seconds at the most. When issue shows itself the scanner shows no activity of...	View
	2011 Ford F-250 Super Duty Lariat 6.2L windshield wipers VIN: 1FT7X2B6XB Customer stated the windshield wipers intermittently operate without the switch being on however it only occurs when you have just turned it back off after using the wipers. This truck has the "steering column module" as Ford describes it which will not give m...	View
	2001 GMC Yukon XL 1500 Denali 6.0L Misfire VIN: 1GKFK66U01 Thanks in advance for any help on this vehicle, it came to us from an other shop, it missfires on cylinders #2 and #7 at idle on misfire data .when take off idle still show miss but not as much as does it on idle.when power brake the engine show no misfire.onc... Trouble codes: P0300 (Multiple cylinder miss fire)	View
	2003 GMC C4500 Topkick C4C042 6.6L No Start, Stall VIN: 1GDE4E1103 ok first off I have no business working on this truck besides that it is my fathers purchase for his plowing business. here It goes truck bought out of state and delivered to my shop off truck. first test drive revealed a pretty noticeable skip in the motor a... Trouble codes: P0380	View
	2005 GMC Sierra 2500 HD SLE 6.6L No Start VIN: 1GTHK23285 Hello iATN Techs, This diesel truck runs normal and is not setting any codes. After a heat soak it will crank and not start. If I cycle the fuel primer on the filter housing the truck will then start. If the vehicle sits over night after a no start, it will st...	View
	2008 Hyundai Elantra SE 2.0L Mechanical VIN: KMHDU46D98 calling all hyundai techs,just did a timing belt,waterpump and tensioner on this 2.0l elantra.now it has a high pitched/chirp/rattle noise that sounds like its coming from the timing area when under accel,light load,at about 1500 up to 2500 rpm,then goes away ...	View
	2004 Jaguar X-Type 3.0L Starting VIN: SAJEA51C84 Hello Group, Vehicle from another shop.Driver's seat and battery replaced,then car would not start.Have code P1260,security input, and code P1603,TCM eeprom.Both codes clear.Car locks and unlocks with remote.Security warning lighs on when car is locked and of...	View
	2003 Kia Sorento EX 3.5L start fuse VIN: KNDJC73383 This Sorento intermittently blows the START fuse 10A. I have changed the starter believing that the starter solenoid would intermittently short out. I was wrong, that made no difference. It had a viper alarm/remote start system on it. I removed that thinking t...	View
	1997 Land Rover Discovery SD 4.0L Excessive Emissions, Poor Fuel Economy VIN: SALJY124XV Stumped as to why both upstream and down stream O2's are stuck at 5.00v. Run engine up to 2500 rpm with no change in sensor voltage or short term fuel trim. Have applied shotgun approach to parts/diagnosis: fit 1 new upstream O2, mass air flow, engine ecu, coo... Trouble codes: P1187 (HO2S one heater open circuit)	View
	1999 Mazda Protege DX 1.6L Poor Idle Quality, Surge, Cuts out, Stall, Misfire VIN: JM1BJ2224X I have checked all wires to ecm from maf for continuity--all good--no shorts or opens. Ground and power are there, and good. My problem lies in the light green/black wire to MAF--only .043 volts, both at the ecm and MAF. with MAF plugged in, the vehicle will b... Trouble codes: P0102 (MAF A ckt. low), P0103 (MAF ckt. high), P0113 (IAT snsr ckt. high), P1141 (testing and results)	View
	2007 Mini Cooper 1.6L Hesitation, MIL Lamp on, Low power VIN: WMWMF33547 Car came in with cel low power checked codes 283d in system cleared code & drove - drives fine for a couple of miles then cel comes on loses power & code is back - removed valve cver timing chain seems physically ok no broken rail s & has no slack cant find mu... Trouble codes: 283D	View
	2005 Nissan Altima S 2.5L no throttle VIN: 1N4AL11D65 Ok car was being driven on cruise control. Cruise set light began to blink and all throttle response was lost. Engine still idled fine. Shut engine off for couple minutes restarted and drove about a mile. Lost throttle response. Towed to shop. Engine started n... Trouble codes: P2135	View
	2006 Pontiac Grand Prix 3.8L distance to empty/fuel guage VIN: 2G2WP55216 hi everyone this grand prix had came into the shop for an intermittent stall condition. after checking the car out I had determined that the pcm was at fault the throttle body also had been replaced before the pcm. now that the car does not show any symptoms o...	View
	1985 Toyota Corolla LE 1.6L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: JT2AE83E9F Got this old carbureted corolla here. When car is cold the engine runs pretty rough. Almost feels like a misfire or like one or two cylinders are weaker than the others. Engine will stall intermittently but it will run for the most part, just not very well. Th...	View
	1991 Toyota Pickup 2.4L Poor Idle Quality, Hesitation, Timing VIN: JT4RN81A3M This is my sons truck. Problem is, getting it to pass smog. when you set the timing to spec the truck barely runs and has zero power. wont make it around the block. I confirmed cam timing is correct and harmonic balancer is not slipped. At T.D.C the dot on the...	View
	2004 Toyota 4Runner Sport 4.0L vsc light on VIN: JTEBU14R64 As stated in repair history replaced o2 sensor and cleared code and all is well, i thought! cel has not returned but vsc and traction off lights still on.Using a generic scan tool to clear code with. Customer is a good friend and says lights came on when cel c... Trouble codes: P0156	View
	2005 Volvo XC90 2.5T 2.5L left reversing light VIN: YV1CZ59265 Complaint was reversing lights stay on all the time, even with key off. Unplugged CAN from rear module. Noticed light or lights still on. Sent REM to Canada for repair. Found no problem with it. Now the reversing lights (or at least the left one stays on with ...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2003 Audi A4 1.8L MIL Lamp on VIN: WAUVC68E63 I found a problem with the pcv valve, which I replaced but My trim numbers end up about the same still even after reseting trim. the customer has had it back for a while now and has not called me so it may be ok. thanks for everyones help. Jim Trouble codes: 17544 (p1136 lean mixture).	12
	2007 Audi Q7 Premium 3.6L shifter VIN: WA1BY74L27 Thanks to everyone who helped, especially Phillip from California who guided us step by step thru the jungle of wires. Wet carpets / water on the floor corroded several wiring junction points on pass side resulting in loss of power supply to pin 9 at TCM.	4
	2000 BMW 323i 2.5L Hesitation VIN: WBAAM334XY This BMW is fixed. A second new MAF was the fix. The first new MAF was made by RPT and did correct most of the calculated load issue but it was still running lean off idle and hesitating cold. We ordered a VDO maf made in Germany and the cold hesitation is ... Trouble codes: P0170, P0173.	4
	2005 BMW 545i 4.4L MIL Lamp on VIN: WBANB33575 Been out of town for a few days.Strangely enough immediately after I posted I went back and double checked if indeed valve cover was fully seated.It was not so the trigger wheel was too far from sensor.All replies were great. Trouble codes: 2B65.	6
	2003 Buick LeSabre Limited 3.8L Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G4HR54K53 sorry it took me so long to close this request got swamped with other work. but here it is it goes to show to go with your gut . most of you were right it was a bad maf. goes to show that even dealers get bad parts. the original replacement maf was from the de... Trouble codes: P0102.	23
	1999 Chevrolet Express 3500 6.5L Stall VIN: 1GCHG39F0X thank you everyone for your advice and help!!! It was the PMD driver once again. I changed the driver and the resistor and the vehicle has worked wonderful for over a week now.	9
	2006 Chevrolet Express 3500 4.8L Misfire VIN: 1GBHG31V56 wow fellas, thanks for all for all the replies, It was the spark plugs after all this, reason I replaced them is because matco has this bad ass tool to check coils & spark kilovolts etc, it measures all that, things may look and function well as per our eyes r... Trouble codes: P0171, P0300, P0420.	33
	2001 Dodge Ram 2500 8.0L MIL Lamp on VIN: 1B7KF23W91 I would like to thank everyone that replied to this request. Below you will find a copy of all the help I received. Thanks again. Frank from Illinois Sep 5, 2014 8:14:15 PM pressureized the system very carefully with nitrogen less then 2 psi. (shop air will... Trouble codes: P0442 (Evaporative emission small leak).	17
	1994 Ford F-150 XL 4.9L Poor Idle Quality, Cuts out, Misfire VIN: 2FTEF14YXR It turned out to be severely corroded pins in the connector that feeds the injectors on the driver side of the head. The white and tan wires that provide ground to the injectors were corroded off inside the connector. Always check signal all the way through th...	16
	2005 Ford F-250 Super Duty King Ranch 6.0L valves, rods VIN: 1FTSW21P05 First and foremost, thanks so much for those of you who took the time to read and reply to my request. I hate to admit that we didn't fix this yet, but sadly that's the truth. I do have some answers though... and here they are. 1. Although I am terrib...	15
	2005 Jaguar S-Type 3.0L MIL Lamp on VIN: SAJWA01TX5 first of all i want to thank all of you taking time to guide me. Most of you suggested purge valve and yes it turned out exactly that. Also this car had a recall on a gas tank so i told him to take to the dealership. He was a happy customer at the end of th... Trouble codes: P0101, P0452, P0456.	8
	2005 Lexus RX330 3.3L rear tailgate autolift VIN: 2T2GA31U75 Thanks to all that replied, the customer declined further diagnostic time on this job. They decided to live with it not working. I did recommend that they take it to the Lexus dealer if they choose to fix it. The parts we suspected to be faulty were very expen...	4
	2003 Nissan Frontier SE 3.3L Poor Idle Quality, Surge, Stall, Misfire VIN: 1N6ED26Y63 After trying everything everyone suggested, plus some more, we found the problem when the truck started knocking. When we initially took the heads off, we realized it had not had the best of care - sludge in the valve covers, stuck rocker arms, etc. Apparent...	6
	1989 Porsche 911 Carrera 3.2L electrical system VIN: WP0AB0915K Well,where do I even start to explain myself on this repair.there is nothing wrong with this car.the battery fixed it. Now we get to the post about the draw.If someone else posted this I would have advised them that the draw was not enough to cause an is...	15
	1996 Porsche 911 Carrera 3.6L top VIN: WP0CA2995T well here goes the cables where bound and fried the control module for reasons unknown the polarity for the motors is reversed the top worked fine but the electric locks where crazy answer,, the micro switches where ...	4
	2010 Volkswagen Tiguan SE 2.0L Battery VIN: WVGAV9AX1A This vehicle has some how repaired itself. After a long charge time with our D-tac plus and a couple of days drive time the draw is gone. With the doors locked or unlocked the draw will drop to 7ma and stay there. I cleared all the codes in all modules afte...	3

(Also Available: All, Asian, Chrysler, European, Ford, GM.)