Automotive Technicians Technical Discussion and Fixes for Dec 21, 2011

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	Help Request	Answers
	1998 Audi A6 Quattro Avant 2.8L upshift VIN: WAUJC84A0W we recently replaced the transmission in this vehicle with a rebuilt unit from erricson. upon completion,there is no upshift from 1st gear. reverse works fine. fluid level is correct, elect. connectors look good, 00532 code. any ideas guys ? thanks...	View
	2001 Audi TT 1.8L AC compressor VIN: TRUSX28N11 The Audi battery goes dead after sitting overnight.I did read about many audi TTs that share this unpleasent affliction in the fix archives ,involving batteries,instrument cluster,fuse block on and on.My audi has a different problem apparently.With the key off...	View
	1999 BMW 750iL 5.4L Misfire VIN: WBAGJ0338X first let me say thanks to all at aitn. this is the best bunch of people i have ever asked help from. anyways this car came in for running rough when cold and coolant leak i removed intake repaired coolant leak and v/c gaskets, installed new spark plugs.checke... Trouble codes: P0303, P0309	View
	2003 BMW X5 3.0i 3.0L Engine VIN: 5UXFA53573 Engine stalled going down the road. Customer stated when she restarted engine it started smoking heavily. Towed to shop. We ran engine and it smokes very white(ALOT,LIKE IT'S ON FIRE!)Disconnected PCV line at dipstick, no oil. Runs smooth,all fluid levels are ...	View
	2006 Buick LaCrosse CXL 3.8L Whining in drive/neutral VIN: 2G4WD58226 So this vehicle has been to us since it had 32,000 miles. We have done all the maintenance, oil changes, tires, oil leaks, etc, but he missed his tranny service. About 10k ago, customer noticed a whining coming from vehicle at park. We told him we can diagnose...	View
	2005 Cadillac CTS 3.6L stability control VIN: 1G6DP56795 neighbor car has a c0461 code and a message in message center "service stability control" the code is for a steering angle sensor and I have not done one of these before and alldata and identifix how to seems vauge im looking for any help on how to swap this "...	View
	1998 Chevrolet S10 LS 4.3L slips after kick down after kick down this truck is in coast till the throtle is lifted to idle, can bang on the rev limiter til you lift. trans rebuilt, new converter, all new electrics, new valvebody.	View
	2000 Chevrolet Express 1500 4.3L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1GCFG15W9Y Truck came in barely running and stalling. Found fouled plugs, corroded cap and rotor. Also p0107. Replaced cap rotor plugs and map. No real change then notice pcm looked like giant ball of corrosion. Transfered eprom to reman pcm completed vtd relearn and cra...	View
	2002 Chevrolet Monte Carlo SS 3.8L Engine VIN: 2G1WX15K42 Vehicle had a complaint of hard starting so we tested and replaced the fuel pump and filter then checked the ect sensor and was out of specs. So replaced it still did not help then replaced plugs and wires did not fix. Cleaned the throttle plate out and still ...	View
	2002 Chevrolet Silverado 2500 6.0L Steering VIN: 1GCHK29U22 Thanks in advance for any replies...they will all be helpful!! The truck has developed a whine in the p/s system. It has hydro-boost...Customer states it is quiet in the morning while cold, which i did confirm. While watching the fluid in the resevoir, at full...	View
	2004 Chevrolet Silverado 2500 6.0L Transfer Case VIN: 1GCHK24U14 Vehicle has a driveline speed vibration feel and sound coming through transfer case. Vehicle has 261 model transfer case with manual engagment shifter.When driving the vehicle there is a vibration you can feel in truck and grinding howling noise noise starts a...	View
	2005 Chevrolet Uplander 3.5L Stall, theft light on VIN: 1GNDV03L25 ok im reposting this as customer came in saturday complaining theft deterant light always on but car is starting.customer made appoinment for later this week but after leaving here vehicle stalled at a drivethu window but restarted fine.also states intermitant...	View
	1996 Chrysler Concorde LX 3.3L No Start VIN: 2C3HD56T2T Towed in with a no start. Has code p0340 which it will come back again if erased. Has no spark, no injector pulse, no cranking RPM on the scanner. On my scanner it says if the signal for crank or cam, should say yes. The crank will flash between yes & no, and ... Trouble codes: P0340	View
	2002 Chrysler Town & Country EX 3.8L Poor Idle Quality, Surge, MIL Lamp on VIN: 2C8GP74L92 Hello everyone. First thanks for taking the time to read this post. We have a 2002 T&C van in our shop that has serious idle problem. It runs at approx 2100 rpm at most times due to the isc being comanded to do so. We have checked for all vacuum leaks and none... Trouble codes: P1294 (desired min rpm not reached)	View
	2007 Chrysler Sebring Touring 2.4L 4-3 downshift VIN: 1C3LC56K47 The car car has a intermediate hard downshift from fourth to third when the engine is hot and coasting at light throttle . At times on a cold engine idle speed will almost stall. Also at light throttle 30-40 MPH and 1500 RPM at steady throttle RPM will vary ap...	View
	1995 Dodge Grand Caravan 3.0L Poor Idle Quality VIN: 1B4GH2433S Eng has rough idle/ stumble, almost stalls the IAC recovers and flucuates. Will smooth out with eng tem sensor disconnected. Has new sensor.	View
	2004 Ford F-350 Super Duty Harley-Davidson Edition 6.0L MIL Lamp on VIN: 1FTSW31P14 I have codes for all 8 glow plug circuits and the glow plugs are good and the module is new. Has anybody else run across this issue? Current draw on each glow plug starts at about 22 amps when power is applied to each plug and drops thereafter. Can a PCM cause... Trouble codes: P0671 (cyl 1 glow plug circuit), P0672 (cyl 2 glow plug circuit), P0673 (cyl 3 Glow plug circuit), P0674, P0675 (cyl 5 glow plug circuit), P0676 (cyl 6 Glow plug circuit)	View
	2006 Ford F-350 Super Duty XLT 6.0L Surge VIN: 1FTWW31P46 This truck surges above 1500 rpm all the way up to WOT. It feels like it is corked up and then releases, and then repeats every 3-4 seconds. It surges whether in neutral or driving and the surge is roughly 200-300 rpm. Can really feel it at light acceleration....	View
	2006 Ford Explorer Limited 4.6L Emissions VIN: 1FMEU75836 Customer came in back in March complaining of check engine light being on. Pulled code P0430-Bank 2 cat below efficiency. Ordered new cat and waited 8 months for it to come in. Installed cat and recommended all 4 oxygen sensors be replaced. The customer said j...	View
	1996 GMC Sonoma SL 2.2L Excessive Emissions, Poor Idle Quality, Surge VIN: 1GTCS1440T Could someone help me on this, its really being a tuff one. The truck has a lopey idle, and if you open the throttle it will kind of stall out. I found the brake booster hose with a huge crack in it and a vacume leak, I thought for sure this would fix it but i...	View
	2003 GMC Yukon Denali 6.0L radio VIN: 1GKEK63U93 Can somebody help me fix the radio on this 03 Yukon Denali? From what I can tell, it's a digital radio with cassette and CD. The lights turn on, the clock turns on when you push the display button, and it tries to eject a disc when you push the eject button. I...	View
	2004 GMC C5500 Topkick C5C042 8.1L Hesitation, Cuts out, Stall VIN: 1GDG5C1E14 Got a new one for me here and having problems finding information.. a shop in town called me in.. they got in two of these trucks to convert from propane to gas..they removed the propane equipment and installed all new fuel rail and injectors...i found 2 elect...	View
	2000 Honda Odyssey EX 3.5L No Heat VIN: 2HKRL1860Y Customer complains of no heat. Checked heater hose with Valve in it and its hot. Other hose is warm not hot. We removed hoses and flushed heater core. Replaced thermostat. No Difference. Vehicle blows cool to warm air at best. Does it have a blend door or just...	View
	2002 Honda Odyssey EX 3.5L Abs/Tcs VIN: 5FNRL189X2 Came in for SRS light and maintenance light on. When I pulled the codes two codes came up 9-03 faulty driver seat buckle switch and 31-02 PFINH signal malfunction. The seat buckle is not a problem..The problem I am having is the 31-02 code depending on how you...	View
	2007 Honda Ridgeline RTS 3.5L compressor VIN: 2HJYK16427 A/c compressor runs all the time with out shutting off as soon as vehicle is started,will run with cycle switch unplugged,control head turned off,fans also run,shut off vehicle & both shut off,have tryed a new heater control head & compressor relay,made no dif...	View
	2003 Hyundai Santa Fe GLS 3.5L ignition coil VIN: KM8SC73E63 this one has been a peach and could use some help. I have found that the ignition coil for cylinders 3-6 has on spark. have moved the coils and it stays with the cylinder and not the coil. have tested the power and i have a good b+. tested the ground and it is...	View
	2001 Jeep Grand Cherokee Limited 4.7L Mechanical VIN: 1J4GW58W01 hello fellow techs. this jeep is doing something odd. code for misfire cyl #3 and rough idle. misfire counter comfirms #3 is missing. preformed compression test. all cyl are 125-130 but cyl #3 jumps from 25 to 30 to 75 to 100 psi at random. i tested is about 1...	View
	2000 Lexus RX300 3.0L Cam Seals VIN: JT6GF10U8Y Just recently replaced timing belt and water pump..customer came back with the rear head cam seal leaking oil around the outside of the seal..replaced cam seal and know is back again with the same leak..there was no oil leak before we replaced the timing belt....	View
	2003 Lincoln Aviator 4.6L left cyl head VIN: 5MLEU78H93 vehicle comes in with c.e.l.,p0106 and intermittent misfire.replaced plugs,tested coils,no misfire,no lite.2 days later comes back,misfire#6.tested compression,failed #6cyl.ford has a tsb for left cyl.head on this motor.repair instructions say to remove eng.to...	View
	2000 Mazda MPV DX 2.5L Mechanical VIN: JM3LW28G0Y we have a hum noise at times, it is coming out from under hood. this happens when coming to stop. it will continue humming for 10-20 sec after stop. you can open throttle and noise would stop. i believe its huming in air box. any ideas. thank guys	View
	1986 Mercedes-Benz 190D 2.5 2.5L idle o/k,won't accel VIN: WDBDB26D8G Vehicle came in on hook with no start. Engine was locked up from no oil. Customer wanted car fixed with used engine. Found used motor with 98,000 miles on it. Used motor was in vehicle with auto trans. and customers vehicle is std. trans. Installed motor and c...	View
	2001 Mercury Sable LS Premium 3.0L pcm VIN: 1MEHM55S41 does any ford guys know what pin the kapwr is on pcm connector, alldata gives me no data, thanx! oh, kapwr is pcm off memory power.	View
	2006 Mitsubishi Endeavor LS 3.8L driveability VIN: 4A4MN21S46 This vehicle at 60mph makes a noise like a belt squeal very high pitched, the longer you drive the more it does it at lower speeds, sound is still there when you turn off the engine and sounds lower pitch as you slow down.	View
	1998 Nissan Maxima GLE 3.0L extended cranking VIN: JN1CA21A9W Intermittently this maxima would crank over for several seconds befor it started. When it did start it would seem like it was flooded. Because it was intermittent, I disconnected the evap purge hose at the engine and customer said problem is gone. Now I need t... Trouble codes: P1446	View
	2001 Nissan Sentra GXE 1.8L Trans fluid level indicator VIN: 3N1CB51D41 performed trans flush and trying to fill trans with the proper level. On the dipstick the higher mark is the cold mark??? Also below hot and cold is a crosshatched area with marks??? anyone run into this before. Please help.	View
	2005 Nissan Xterra Off-Road 4.0L No Start VIN: 5N1AN08U05 Cranks /no start.Has injector pulse and no fire.Have ignition voltage at coils.Fuel soaked badly.No codes.Ran compression test on 5 cylinders.all even.Could not get to one/intake in the way.No data on MODIS for cam or crank signals.Any help would be great.Acor...	View
	2003 Saturn Vue 2.2L No Start, MIL Lamp on VIN: 5GZCZ23DX3 First time post for help so bear w/ me. After engine replacement, car ran couple seconds and no restart. Codes occured, electronic throttle by wire throttle body assy gets very warm/hot with key on. Checked for possible pinched wires in harness or something in... Trouble codes: P0107 (Map Baro Low), P1120 (Tps 1), P1220 (T P Sensor), P1681 (Driver 5 Line 1), P1635 (5v Ref Low), P1515 (Electronic throttle)	View
	1995 Toyota Tacoma DLX 2.4L 4x4 VIN: 4TAUN73C5S First of all thank you for your time. This truck was purchased by my customer six months ago. Yesterday for the first time he tried to use the truck in 4x4 hi range and found the truck was dragging the rear wheels. Once I got the truck here it became evident t...	View
	2000 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG22K4Y hello thanks for your help with this toyota the car will set a po440 all the time after about 1600-2000 km of driving i have smoke tested the system no leaks found the vsv at the rear of car was replaced due to sticking i can get the sensor to work from the sc... Trouble codes: P0440	View
	2002 Toyota Corolla LE 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T1BK12E22 This car originally came in last week for excessive oil consumption. We found no leaks and told customer that the engine is burning oil. The customer came back a few days later with new problems. He told us the MIL was on and the engine lacked power. We retrie... Trouble codes: P0325 (Knock Sensor), P0303 (Cylinder 3 misfire), P1349 (VVT System)	View
	2002 Volkswagen Passat GLS 4 Motion 2.8L Misfire, MIL Lamp on VIN: WVWSH63B52 Hello, having an issue with this Passat. Runs smooth at idle, only misfire under wide open throttle. It has a known good coil, I also removed the upstream o2 sensor and road tested to check for a blocked cat, it made no change. Wires are new and tested. plugs ... Trouble codes: P0300 (Random/Multi Misfire), P0301 (Cyl 1 misfire), P0302 (Cyl 2 misfire), P0303 (Cyl 3 misfire), P1423 (Secondary air injection Bank 1 incorrect flow), P1411 (Secondary air injection Bank 2 incorrect flow)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2008 Audi A4 Quattro 2.0L Pcv VIN: WAUDF78E68 Thanks to all. We replaced the valve,you could see a plastic stem loose inside.The new part was cast over where the old had the visible failure. Car still has a lot of vacuum on crankcase but you can remove oil cap while running and runs fine with the cap on.	11
	2006 BMW X3 2.5i 2.5L pcv VIN: WBXPA734X6 Hi guys just wanted to thank everyone who replied I swapped out the PCv and all the hoses took for good drive and all is perfect. I took mikes advice about cutting the old hoses which made removal super easy. I was able to get access without removing the oil ...	7
	1996 Buick Park Avenue 3.8L Vents VIN: 1G4CW52K0T Thanks to everyone that answered me on this , I think every single answer was right, it was a vacume leak. I could not find the canister so I did not think it had one until someone mentioned it was behind inner fender panel under the battery. Once I took the i...	49
	2001 Chevrolet Silverado 1500 5.3L dash lights VIN: 1GCEK19T31 the customer had an add on accessary power and ground feeds in junction box. one of the wires was shorted to an unused pin that went to dimmer lighting circuit. Thanks for all the help. I guess I assumed that with 10 amp fuse inact there would not be a short b...	10
	2004 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13Z64 Never found any problem with purge or vent solenoid on this. Of the 9 replies, there were as many different opinions. Evidently the charcoal canister tends to fill up with dirt and cause this problem, as well as the FTP sensor had a few mentions. Ended up r... Trouble codes: P0446 (EVAP Vent performance).	9
	2004 Chevrolet Optra 2.0L No Start VIN: KL1JD52Z94 The car is fixed. Thanks for the help guys especially David from Massachusetts and Alvaro from Aruba for the wiring diagrams and the heads up on the TPS , and MAP sensors. It was a MAP sensor that cured the problem. I am not quite sure why the MAP sensor had s...	10
	2006 Chevrolet Silverado 1500 LT 5.3L Stall VIN: 1GCEK14Z96 It was suggested to tap into the P/S switch or A/C switch to increase the idle or to install a aftermarket kit (which the customer did not want). The '06 1500 does not have a P/S pressure switch and I felt trying to tie into the A/C request would have unwanted...	7
	2007 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: SCREAM1NG7 This was not my best help request , but people were helpful regardless.Several knowledgable tech's explained the Bank 2 PIDs as being default figures, and that I needed to compare fuel trim numbers at idle and cruise, possiblly verify scan tool data with anoth... Trouble codes: P0171, P0420.	14
	2006 Dodge Durango SLT 5.7L MIL Lamp on VIN: 1D4HB48206 A big thanks from all who took time to answer my help request. The greater majority leaned to making sure it had the right oil in it. After talking to the customer, I found out he was doing his own oil changes. He told me he was using 5W20, but it had been a w... Trouble codes: P3497 (MDS Rationality Bank 2).	10
	2006 Dodge Ram 1500 ST 4.7L Oil Pressure VIN: 1D7HU18NX6 Thanks Kent, your idea was great, we pulled the motor, and took oil pan, front cover and valve covers off, covered the oil pick up so the oil wouldn't go back through the screen. We used a oil fill system and found the oil running out of the lower idler for th...	12
	1981 Ford Bronco Custom 5.8L Poor Idle Quality the truck is fixed.egr solenoid and vent solenoid are next to each other.alldata had poor vacuum diagram,very confusing.i was able to get a old mitchell book.a picture says a thousand words,literly.the customer did a lot of work to this truck.the vent solenoid...	8
	1996 Ford Crown Victoria 4.6L pump VIN: 2FALP73W5T got this fixed and thanks for all the replies, this was an installer error, (my part); the cap that comes with the pump covering the inlet tube was left on and plugged the feeder hose to the pump, After reading the remarks i put more consideration into a possa...	18
	2001 Honda CR-V EX 2.0L Poor Idle Quality, Surge, MIL Lamp on VIN: JHLRD18611 Thanks for allof the help the idle problem is fixed it was the thermostat,which is almost unreal when the car never had any overheating or not warming up well,there was never complaint with the cooling system but when we removed it you could tell that the rubb... Trouble codes: P0505 (Idle control system problem).	25
	2005 Honda Odyssey EX 3.5L Poor Idle Quality, Stall VIN: 5FNRL38625 We returned the vehicle after taking the advice we received about the system needing flashed. Customer took the vehicle and we received a call a week later the car was at the dealer with a blown engine. Lucky for us the dealer said we did nothing to cause thi... Trouble codes: P2647.	5
	2007 Honda Ridgeline RTS 3.5L Heater VIN: 2HJYK16427 Found that the ac system was not shutting off & was freezing up the evap causing a blockage for the fan to try to blow through	3
	2001 Hyundai Elantra GLS 2.0L wont shift VIN: KMHDN45DX1 thank you all for the tips this one was more than one problem had a bad output speed sensor as one also some how the trans temp sensor had come un pluged did get car to shift till both problem were fixed again thank you car is on the road again	11
	2001 Jaguar XJR 4.0L Seal VIN: SAJDA15B51 ok the aftermarket fluid was apparently the problem, even though the level was correct ( at 25 and 80 deg C ) when it got hotter the level would all of sudden be half way up the dipstick. this time i disconnected the cooler line and flushed it completly , co...	16
	2004 Jeep Grand Cherokee Limited 4.7L oil gauge VIN: 1J4GW58N44 Everyone was right, the OE sensor took care of it. What I still don't understand is at times, when grounding the sensor wire to ground, the scan tool would NOT display 0 volts. Apparently, the computer filters this signal at times, (kind of like a GM fuel gaug...	6
	2007 Lincoln Mark LT 5.4L radio controls inop VIN: 5LTPW16507 Not much info out there for this problem. We assumed the radio is bad. Customer also complained that cd player sticks so we referred him to a audio shop for an exchange as he wanted to keep OE type radio. Never heard back from customer. Thanks for all the help...	3
	1988 Mercedes-Benz 300SEL 3.0L Poor Idle Quality, MIL Lamp on VIN: WDBCA25D9J Vehicle was fixed after readjusting air flow sensor with vehilce running to spec. after doing adjustment code 10 went away and vehicle ran fine. Trouble codes: 10 (throttle valve switch idle speed contact).	4
	2001 Mitsubishi Diamante LS 3.5L MIL Lamp on VIN: 6MMAP67P71 well this beast is done,the problem was the pcm, the obd data line was shorted inside the pcm across the purge control wire from pcm which had a small 2-3 volt ground on itsignaling like morse code(only woul've seen it with my power probe),when the pcm comman... Trouble codes: P0441.	4
	2008 Nissan Maxima SE 3.5L Cuts out VIN: 1N4BA41E28 thanks to all who reponded - the customer chose to bring it to the dealer - they claim its a faulty positive battery cable - maybe its the same cable thats used on the recalled sentras for this problem Trouble codes: U1000, U1001, P1212, P1612.	6
	2000 Toyota Tundra SR5 4.7L Misfire VIN: 5TBBT4418Y after checking resistance on the injector, switched the #2 injector with the # 4 injector and the misfire moved, replaced injector and thid fixed the misfire it seems that the #5 and #7 misfires were sympothetic misfires. thank you for all of the replies Trouble codes: P0300, P0302, P0305, P0307.	11
	2001 Toyota Corolla CE 1.8L Clutch VIN: 2T1BR12E51 Well, we got a lot of responses but I don't think some read and understood that the owner has had many stick vehicles and it's not him - anyway, his son is getting the car now --- so we'll see. We did verify the release fork was not worn. In the meantime, we...	33
	2005 Toyota Sienna XLE 3.3L cylinder compression VIN: 5TDZA22C85 Many were right, it was a belt frayed on the side due to slow coolant leak from water pump. Frayed cord from belt wrapped around lower pulley and jumped two teeth when it died. While cranking, the belt was turning and the front cover was hard to remove so I ha...	16
	2007 Toyota RAV4 Limited 2.4L MIL Lamp on VIN: JTMBD31V67 Boy am I glad to be a part of IATN, all you guys who said to check the plug/wire going to the knock sensor were right it was broken, as for the accleator I had to send it to the delership and they relearnt the throttle and I got it back in 3 hours and it was j... Trouble codes: P0328, P2118 (Throttle actuator control motor current range performance).	10
	2008 Toyota RAV4 3.5L Entire System VIN: JTMBK35V78 TURNS OUT ALMOST EVERYONE WAS CLOSE TO CORRECT JUST TRYING TO FIND THE TROUBLE. ACCIDENT CARS GOTTA LOVE EM. SO THE FIX WAS LOOSE BATTERY POSITIVE GROUNDING OUT ON FRAME FROM RUB THROUGH. AFTER AN ARC IT WOULD SHUT CAR DOWN THEN RESTART STRAIGHT AWAY. THANKS...	10
	2010 Toyota Tundra Limited 5.7L Engine Knock VIN: 5TFHY5F11A As most of the replies indicated, this condition seems to be present in many of these engines. I refuse to use the term "normal" because if I had heard this noise when I was buying the truck, I would've handed the keys back and walked away. I went back to th...	16
	2006 Volkswagen Jetta TDI 1.9L lack of power VIN: 3VWST81K16 Thank You Every One Who Responded!This car is finally fixed. We checked the fuel filter as many suggested. It looked more like the oil filter from a diesel, black and oily. Replaced the fuel filter and car ran normal. So the lack of power was due to lack of...	12
	2007 Volkswagen GTI 2.0L Poor Idle Quality, Stall, MIL Lamp on VIN: WVWHV71K27 well it turned out to be a leak after all, the cooler had a good size hole in it. I feel like an idoit, dont know how I could have missed that. so the final fix for this car was lifters and injector seals for the misfire codes and new cooler for the p0100 Trouble codes: P0100.	8
	1988 Volvo 244 DL 2.3L compressor VIN: YV1AX8847J SO sorry for the delayed fix. I am sharing my account with my techs and this was one of theirs. The fix was the capillary tubes on the expansion valve were not located properly. AC worked great right after. Thanks again for everyones help and have a Happy Holi...	10

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