Automotive Technicians Technical Discussion and Fixes for Feb 28, 2013

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	Help Request	Answers
	2006 BMW 325xi 3.0L No Start I have a bmw 325xi that came in for running rough and check engine light on. Started vehicle and test drive and ran good no check engine light on, scanned engine and have codes listed above,cleared codes and let sit outside and retest drove and ran good. Sent ... Trouble codes: 2A37, 2A47, 2A43, 2A38	View
	2005 Buick Rendezvous Ultra 3.6L all body sytems VIN: 3G5DB03755 Customer states vehicle was used to jump another vehicle. While the other vehicle was being started it made this vehicle stumble and shut off. After that when you turn the key to run, none of your normal key on instrument cluster lights come on except the righ...	View
	1973 Cadillac Fleetwood 7.7L alternator VIN: 6B69R3B101 vehicle came in with new alt already installed. complaint was that after driving for awhile, that car had to set for hours before it would start again. i found charging to be [...] at 2k rpm. informed customer, he came picked up alt, returned with anothe...	View
	2001 Cadillac DeVille 4.6L radio VIN: 1G6KD54Y01 Bought this 01 Caddy, and it has the radio message, "Locked. AntiTheft Active". Driver manual suggests that codes can be plugged in to clear the locked code. Online services tell me to turn the radio on, hold in program buttons 2-3 or 1-4 for ten seconds, and ...	View
	2000 Chevrolet Astro 4.3L Misfire VIN: 1GNDM19W7Y This problem is driving us nuts thankyou for the help in advance. This van misfires at times and it seems to only do it under wet conditions all the parts listed have been replaced in the last year by us, not necessarily chasing this problem, the misfire so fa... Trouble codes: P0300 (engine misfire), P0300 (engine misfire)	View
	2004 Chevrolet Astro 4.3L Poor Idle Quality VIN: 1GNDM19X84 I appreciate your time and input on this. When driving vehicle and coming to a normal stop, engine RPM stays high. If you release the brake, van will take off at a pretty good clip. Customer has found that he can drop it into neutral and RPM will instantly dro...	View
	2007 Chevrolet Equinox LT 3.4L Will not reset 3 mon VIN: 2CNDL73F87 Thanks in advance sorry not much info to digest. Need help with a starting point.this vehicle will not complete the ready moniters for evap ho2s and egr.i can control and initiate egr solinoid and vehicle will go thru evap service bay test and pass but still s...	View
	2009 Chevrolet Cobalt LT 2.2L Reduced power/Limp M VIN: 1G1AT58H79 This is one of our company cars that we have sold. It was a rental. Customer said it first acted up in snowy/icy driving, traction control kicked on then it went into limp in mode with a P2135 code. Clear the code it runs fine. We drove it for a couple days ou... Trouble codes: P2135 (c0561-), C0561	View
	1999 Dodge Grand Caravan ES 3.3L MIL Lamp on VIN: 2B4GP44GXX This vehicle came in with failing smog for code P1698. The other code (P1695) did not cause smog test to fail. This one has been a pain in the rump. Checked the system and found dash guages do not work which has been a problem prior to the check engine light. ... Trouble codes: P1698 (No Bus Message From Trans Control Module), P1695 (No CCD Message From Body Control Module)	View
	2001 Dodge Grand Caravan ES 3.3L No Start VIN: 2B4GP44R41 I have no codes, I have fuel pressure, I have injector pulse, cam & crank show present and insync on the DRB, I can actuate the coils with DRB (did all 3) good spark...BUT when I try to start vehicle I have NO spark. I do have ASD feed to coil while cranking, ...	View
	2002 Dodge Ram 1500 ST 4.7L Heater core VIN: 3B7HU18N72 Truck has heat if you bleed the system (but not great, 100 degrees at vents), then if you cap it and drive it down the road, it loses heat steadily. Customer has replaced radiator, water pump, t-stats, heater core, and fan clutch. We got it and did a block tes...	View
	2003 Dodge Neon SXT 2.0L MIL Lamp on VIN: 1B3ES56C63 ok wondering if any one has a better idea on this then re pleasing the pcm?? so far we check Resistance on ground wire (bk) is good, resistance on nvld switch signal (or) is ok also not shorted to ground or voltage and nvld solenoid control all check out good.... Trouble codes: P0499	View
	2007 Dodge Caliber SXT 2.0L Bus Problem VIN: 1B3HB48BX7 Good day everyone...I need some help here. I have an 07 Dodge Caliber that I have no comm with the TCM. The PCM and TIPM (or front control module) have a hard U0101 stored. The PCM also has a U0402 stored. When I plug into the car with my Mastertech (and a few...	View
	1993 Ford F-250 XL 7.5L Misfire, Hard Trans Shift VIN: 1FTHX26G4P Have this F250 with the 7.5. Has been to a couple different shops and nobody has been able to nail this one down. The vehicle has a misfire on cylinder 2 and 5. With the spout connector installed cylinder number 2 will have intermittent spark at the cap to the...	View
	2005 Ford F-150 King Ranch 5.4L Fuel smell VIN: 1FTPW12535 This is the second time we have had a complaint of smelling gas on a 5.4 F-150. The smell is only when it is started after sitting. Both customers noticed the smell within a few months of us replacing the spark plugs. We have not been able to duplicate the pro...	View
	2006 Ford F-150 XLT 5.4L No Start VIN: 1FTPW14516 Have this F150 that has me stumped. Initially thought it was just a no start, but later found it wouldn't start if the park lights were turned on. Had verified no voltage coming out of smart junction box for injectors or for fuel pump driver module. If the par...	View
	2006 Ford Expedition King Ranch 5.4L R.F. power window VIN: 1FMFU17586 Passenger front windows stuck down, power directly from switch and motor did not work. Replaced motor and powered directly at motor and works fine. Powered from switch and window stuck down again. Checked window relay, is good. Driver side Front works fine, dr...	View
	2006 Ford F-350 Super Duty XLT 6.0L Turbo VIN: 1FTWW31P56 While I have the turbo off for other work I disasemmbled the turbo to clean the unison ring, vanes, and housings and found the unison ring worn where the actuator moves the ring and where the vanes slide and I also found two of the vanes have the tab that gos ...	View
	2007 Ford Mustang GT 4.6L MIL Lamp on VIN: 1ZVFT82H27 We're having a strange issue with this supercharged mustang. It came in with a lean bank one code. Found long term fuel trims for both banks were at +22.4. Smoked intake and found leakage around intake boot at throttle. Repaired leaks and still had same issue.... Trouble codes: P0171	View
	2006 GMC Canyon SLT 3.5L 4WD light flashes VIN: 1GTDT13626 4wd light flashes in 4 hi, can hear the motor on the transfer case working, the front driveshaft going from the transfer case to the front differential does turn, the front axle does not engage Tried to pull codes from the transfer case module, cannot communi...	View
	1994 Jeep Grand Cherokee Laredo 4.0L Electronic VIN: 1J4GZ58S2R The transmission is in limp mode, starts out in 3rd. and stays there. You can manually shift to 1st. and then up shift back to 3rd. I have looked through the archives and found several that pertain to this problem. But what I'm tring to find out is another pro...	View
	1992 Lexus LS400 4.0L Hesitation VIN: JT753UF100 Hi Group Looking for some help with an LS400. Loosing injector pulse when snap open throttle. But slowly revving throttle will rev to redline. This is what I have checked so far. TPS idle switch tested and adjusted. TPS Pin 1-3 idle .5v WOT 3.2v And swaped...	View
	2010 Lexus RX350 3.5L door locks VIN: JTJBK1BA7A This vehicle door locks all function fine with interior switches and FOBS. Regular driving functions fine, hit passing gear or rapid acceleration and locks (already locked when put in Drive)try to continually lock. Come to a stop is drive or neutral mostly wit...	View
	1992 Mercedes-Benz 300SD 3.4L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy VIN: WDBGB34E9N #1 valve leaked. Replaced pressure valve seals and o-rings working as clean as possible. Now it idles and shuts down (with exception of #6 which finally pumped and quit). When warm it smokes black and tries to run away?	View
	2005 Mercedes-Benz C230 Kompressor 1.8L No Start VIN: WDBRF40J95 Hello Iatn members, Well, I hope that someone out there have seen this problem before. This engine crank longer than usual to start when engine sat for 10-15 minutes after hot soaked. Some time it crank and run other time it crank 4-7second before it fire up ...	View
	2003 Mini Cooper 1.6L door locks,, windows, climate control, wipers, etc VIN: WMWRC33433 We have a 2003 MINI here with strange electrical problems. After idling for 10 minutes, portions of the electrical system start to shut down. (turn signals, electric windows, climate control, wipers, high beams, and the exterior lights flicker) so far I have r...	View
	1997 Nissan Altima GLE 2.4L No Start, back fire VIN: 1N4BU31DXV This vehicle sort of starts and runs, but immediately back fires and runs for only a few seconds. Fuel injectors are not leaking, the fuel pump one way valve does leak down in 45 seconds to 20 PSI, but this is not the no start problem. All the ignition parts a...	View
	2009 Nissan Maxima S 3.5L fuel temp VIN: 1N4AA51E39 Need to know is 6.7volts enuff to wreak this sensor or was it a bad part	View
	2001 Oldsmobile Bravada 4.3L Monitor VIN: 1GHDT13W21 I can't get the SAIR and CAT monitor to run. I have drove this car for three day. I have try following Mitchell drive cycle and no result. I wondering if PCM have anything to do with it. The only reason I need monitor to run it for CA SMOG. It only allow you t... Trouble codes: N0NE	View
	1998 Toyota 4Runner SR5 3.4L Coolant Loss VIN: JT3HN86RXW Vehicle came in with intermittent heat gauge fluctuation. The customer noticed white smoke from tailpipe, and that it would not always be present. Upon further inpection we found that the engine ran rough as well, but it did not have a consistent misfire. We o...	View
	2006 Volkswagen Jetta Value Edition 2.5L Hesitation VIN: 3VWPG71K26 Hello, We are having a challenge with this vehicle. Customer brought car to us with the complaint of poor running after fill up. We scan for codes and found the p0171 code. We smoke tested the system and found a leak at the air intake hose between the air mas... Trouble codes: P0171	View
	1982 Volvo 244 GL 2.1L Starting VIN: YV1AX4940C Greetings! Vehicle towed in as no-start. Actually runs when key held to 'Start' - loses power to coil when key released to 'On' position. Power to appropriate fuses when key is in 'On' position so I believe ignition switch is ok. After sitting overnight had po...	View
	2003 Volvo S80 T6 2.9L compression VIN: YV1TS91Z43 Hi guys, this S80 had very low compression In cyl #3, with leakeage past exhaust valves. I've got the cylinder head off and found 1 of the #3 cyl exhaust valves chipped. Compression was ok in all the other cylinders before disassembly. No sign of impact with p...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2004 BMW 645Ci 4.4L MIL Lamp on VIN: WBAEK73414 Well got this one out of my life. Once again my fault codes were there I found that I didn't have the solenoid for the intake cam in the front cover seated all the way. During my first R&R I lubed the orings very well and pushed in as far as I could thinking I... Trouble codes: P0390, 27C0.	9
	2006 BMW 750Li 4.8L Poor Idle Quality VIN: WBAHN83506 We cut our losses with this one after way to many hrs. we ended up sending it to BMW, there it has been now for 4 days and has been passed around the shop, latest update is that the regional Dealer technical support was contacted & is scheduled to come visit t...	3
	2003 Chevrolet Blazer LS 4.3L front axle will not engage VIN: 1GNDT13X43 many thanks to all that took the time to respond i could not believe it that this thing made no noise when i found a broken shift fork.it seems to me that it would have made atleast alittle noise but in this world who knows.i thank each and every one of you fo...	11
	2005 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: 1G1AL54F05 It tok a little while to get a solid response but a new post cat sensor fixed the problem. The only bad news is that now a cat efficiency code has popped up in its place and the vehicle is just out of it's warranty due to mileage. Isn't life just grand? I tri... Trouble codes: P0113.	10
	1992 Dodge Dakota 5.2L ignition VIN: 1B7GG26Y4N Thanks for all the help guys, IATN is a fantastic resource ! We fixed the Dodge by replacing the ASD relay as suggested by a couple of the responses. This vehicle has had previous pack rat damage and a bunch of wiring repairs due to the hungry little bastards ...	6
	1995 Dodge Dakota 5.2L over drive VIN: 1B7GG23Y9S well thank you to everyone who gave me input I replaced t-stat and ect and overdrive kicks in after about 1 mile of driving Working great so far again thanxs to everyone for your help	15
	2002 Dodge Ram 1500 ST 5.9L MIL Lamp on VIN: 1D7HU18Z32 THANKS FOR ALL THE HELP, MOST WERE GENERIC, BUT A FEW WERE VERY HELPFUL. WE FINALLY CHECKED EVERYTHING WE COULD AND FOUND NE PROBLEMS IN THE WIRING, SO WE INSTALLED THE REPLACEMENT (WARRANY) ECM. IT FIXED THE PROBLEM. APPARRENTLY THE FIRST REPLACEMENT WAS DEFE... Trouble codes: P0601.	13
	2007 Dodge Caliber R/T 2.4L ABS/Traction VIN: 1B3HE78K57 This one is fixed although I'm not sure where I went wrong. Had car lot send this one to the dealer as I had exhausted all options. He called me today and said they updated the software in the pcm. What I don't understand is I programmed the new pcm with my s...	3
	2008 Dodge Ram 4500 ST 6.7L Engine VIN: 3D6WC66A68 Thank you for your help, I finally got it diagnosed and repaired. Summary- The fuel system was contaminated and the low pressure pump in the tank had failed. At some point the gradually worsening fuel problem, I assume, caused the throttle plate to malfunctio...	8
	2000 Ford Focus SE 2.0L MIL Lamp on VIN: 1FAFP34P5Y thanks guys for your input. New dear pcv valve did the trick.thanks again. Trouble codes: P0171.	18
	2008 Ford F-550 Super Duty XLT 6.4L MIL Lamp on, Loses Power VIN: 1FDAW57R98 Customer has not yet returned for repairs. Thanks for the help. Trouble codes: P0193 (Fuel Rail Pressure High), P0194 (Fuel Rail Pressure Erratic Intermittent), P0088 (Fuel Rail Pressure Out of Range).	7
	2012 Ford Explorer Limited 3.5L Cruise Control Module VIN: 1FMHK8F87C Body shop took vehicle to dealer. Invoice was a follows: Reprogrammed using as built data and recalibrated crash sensors. Thanks to all those who replied! I stll am not sure what recalibrated crash sensors is.	4
	2002 GMC Yukon SLE 5.3L ABS module VIN: 1GKEK13Z42 Thank you all for your help. I changed rear calipers and the problem was gone.	8
	2001 Honda Prelude 2.2L Hesitation, Surge VIN: JHMBB61401 Thank you all for trying to help me. I have advise customer to took it to dealer. I will post it when I know what's the fix. Trouble codes: P0505 (Idle Control System Malfunction).	12
	2009 Honda Odyssey EX-L 3.5L Misfire, MIL Lamp on VIN: 5FNRL38639 Had to send vehicle to dealer for special tools to test rockers. During road test they took a snap shot picture when misfiring & sent to their tech. line. Told rocker arms were getting stuck open. Dealer replaced bank 1 rockers & spool valve. Returned to cust... Trouble codes: P0302.	15
	2003 Infiniti G35 3.5L Discharged battery VIN: JNKCV51EX3 Thank you all for taking the time, customer declined further diagnosis. In the end, simply removing the 15A radio fuse was good enough for the customer, guess he does not care about the radio. You would think that by unplugging the amplifier, subwoofer and the...	5
	2004 Infiniti G35 3.5L abs VIN: JNKCV51F44 Test Drive the car with the Scanner hooked up , right front sensor no reading , swap front sensors still no reading from the right front, Scope the the right front sensor , perfect wave signal,,, It was the ABS Module,Just came in Today, install it, test drive...	4
	1998 Jaguar XJ8 4.0L drivers window and sunroof VIN: SAJHX6246W well its half fixed. as recommended i replaced the sun roof module and that fixed the sun roof.as for the window i unplugged the window module re plugged it and its working but it will ack up again and ill keep looking.	2
	1994 Jeep Wrangler SE 4.0L Speedometer Thanks to all that responded. After trying a second used speedo head (gauge only) without sucess, I disassembled gauge cluster and found ribbon going from cluster connector to speedo and idiot lights corroded with green stuff all over. This corrosion was bet...	6
	2008 Jeep Grand Cherokee Laredo 3.7L Cuts out, Stall VIN: 1J8GR48K18 Thanks for all your help, the customer decided to take the vehicle back until it got worse. Being so intermittent we couldn't get it to dye enouogh to really troubleshoot, thanks again, Jeff Trouble codes: P0522.	6
	2010 Kia Rio SX 1.6L Tire pressure sensor VIN: KNADH4A33A Installed a new Kia brand sensor and reset the system with the Ateq V55. Light came back on in 20 miles. Guess I'll have to take it to a Kia dealer.	6
	2005 Mitsubishi Galant GTS 3.8L lifters VIN: 4A3AB76S85 Steve and Happy nailed it. It was the timing belt tensioner. It threw me because it would go away when the lifter bleed procedure was performed. The timing belt was replaced 10k ago by another shop. I don't think it was tightened correctly which may have c...	7
	1997 Nissan Pickup 2.4L MIL Lamp on VIN: 1N6SD11S6V first off . thanks very much for everyone to take their time to help a fellow tech. scott in florida nailed it. the customer failed to tell me that he already had the truck at another shop who could not diagnose the clogged egr passages. i went to the pcm...	5
	2001 Nissan Altima GXE 2.4L MIL Lamp on VIN: 1N4DL01D71 Well when the customer returns with the car I will replace the thermostat. Unless I finds signs of any coolant leaks, which given the age of the car i wouldn't be surprised if it did. Thanks to everyone. Trouble codes: P1156.	6
	1997 Saturn SL1 1.9L turn signal VIN: 1G8ZH5284V i havent had the time to look into it much. The test light into the fuse spot is a VERY good idea. I also am going to take the fuse box apart next	14
	2009 Subaru Tribeca 3.6L Steering VIN: 4S4WX99D59 thanks for all the info. i replaced the steering rack and vehicle drives perfect.	10
	1998 Toyota Camry CE 3.0L RPM varies VIN: JT2BF28K3W I removed the after market remote start system which had a transponder bypass. The customer has put on about 750 miles so far and says everthing is fine. Thank you for your help. Bob	12
	2004 Toyota Land Cruiser 4.7L Noise VIN: JTEHT05J54 Thank you for all of the replies. This really was a pretty easy repair. The fan bracket did come out without having to remove the compressor. We found lots of coolant stains around the pump so we replaced the water pump and timing belt using an AISIN kit. We a...	11
	2002 Volkswagen Jetta GLS 1.8L MIL Lamp on VIN: 3VWSE69M12 This vehicle has been a problem child due to the nature of the head replacement and the owner. It has breathalizer lockout and is hard to deal with. The car is going back to the person the owner bought it from for repairing. I will update this post as soon as ... Trouble codes: P1340 (Camshaft Postion Sensor- G40 Engine Speed Sensor- G28 incorrect allocation).	14

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