Automotive Technicians Technical Discussion and Fixes for Apr 15, 2013

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	Help Request	Answers
	2004 Audi A8 Quattro L 4.2L Starting VIN: WAUML44E24 2004 Audi a8l with an excessive battery drain.Ido not have a lot of Audi experience so we sent the car to the dealer, they installed a new battery, new battery management module and mmi switches. the old switches were jammed. 2200.00 dollars later they said it...	View
	2012 Buick LaCrosse 2.4L battery light VIN: 1G4GA5GR4C The battery should get charged from the hybrid battery as far as I can tell. The body control module tells the engine module when this should take place. The body module has a code B1517 battery voltage not plausible. I think this is my problem but the data fo...	View
	1998 Cadillac DeVille Concours 4.6L a/c compressor VIN: 1GEEH90Y5W My customer came in to me after purchasing this vehicle with an empty a/c system last year. I recharged the system and it worked perfectly. He returned later and I found that the compressor was leaking but he chose not to fix it until the next summer. This spr...	View
	1999 Cadillac Seville STS 4.6L Accessories VIN: 1G6KY5496X 1999 Cadillac STS 4 door, used vehicle from car lot. Battery drain over night. Found 4 amp drain in system, Remove fuse 7(I/P fuse) at underhood fuse box. This is the fuse for the instrument cluster and the climate control panel. Now draw down to 80 milliamps....	View
	1993 Chevrolet C1500 Cheyenne 5.7L Air inlet actuator VIN: 1GCDC14K4P When starting, and stopping vehicle. An irritating flapping Noise comes from the blower motor location, Directly from the Air Inlet actuator. I have seen these strip the gears internally before. And It looks as though the entire AC /heat control may have to be...	View
	2007 Chevrolet Silverado 2500 HD Classic LT 6.0L Hesitation VIN: 1GCHC24U47 This truck originally came in with a code P0174 too lean bank 2. I replaced the b2s2 o2 sensor when I saw a reading of 0 volts intermittently on scan tool. Cleared code and drove to complete monitors for smog check and code P0420 cat efficiency code came on. I... Trouble codes: P0420 (Cat sys efficiency below threshold bank 1), P0174 (Too lean bank 2)	View
	2000 Chrysler Concorde LXi 3.2L MIL Lamp on VIN: 2C3HD36J3Y This car has a second problem after replacing the vss the "00253 undocumented code" keeps coming up. It is related to the following components which have a common grounds. Downstream [...], ckp sensor, cmp sensor, egr, tp sensor, map, a/c pressure transduc... Trouble codes: 00253 (This not a p0253 it is a 00253 undocumented code)	View
	2004 Chrysler 300M 3.5L Poor Fuel Economy VIN: 2C3HE66G64 Fuel mileage has dropped noticeably and suddenly. No codes found when scanned. Not as bad on long runs but up until recently was great. Was even good "around town" Any ideas will be appreciated. Bill	View
	2003 Dodge Dakota SLT 4.7L Misfire, MIL Lamp on VIN: 1D7HG42N93 Truck came in with check engine light, code P0302- cylinder #2 misfire. Truck was not running poorly at that time. At that time we swapped spark plug and ignition coil with another cylinder, customer had to leave before we could check results of the swap. Next... Trouble codes: P0302	View
	2001 Ford F-150 King Ranch 5.4L detonation/ spark VIN: 1FTRW08LX1 Hello fellow tecks. This truck came to the shop on tow truck with a No start condition. Before the truck stop running costumer heard loud engine noise. We replace the computer for a rebuil one. We replace the engine for a use one. The truck starts and runs gre...	View
	2001 Ford Mustang GT Bullitt 4.6L Radio VIN: 1FAFP42X11 Noticed this morning when I started the car that the battery seemed low. Slow cranking. I don't drive this car often and just thought the battery needed a charge. Turns out the battery is fine after charging, but the car has a draw. I have located the draw on ...	View
	2002 Ford Taurus SE 3.0L Hesitation VIN: 1FAFP53U02 Customer came in with a locked up engine. Replaced engine with a junk yard unit. Vehicle went for test drive and feels like clogged convertors. Tested fuel pressure and at the time at full throttle had 5 psi of pressure. Replaced fuel pump with a junkyard unit... Trouble codes: P0191	View
	2005 Ford F-150 XLT 4.6L odometer VIN: 1FTRW14WX5 Hi, folks. We installed a used cluster into this truck to correct a non-functioning airbag warning light, and a non-functioning "park brake" warning light. We used IDS to retrieve and transfer module configuration. Everything works, but the odometer reading is...	View
	2010 Ford F-150 XLT 5.4L rotors VIN: 1FTFW1CV1A I have this F150 that initially came in with the complaint of brakes squealing. Found it time for front brakes. Replaced front pads and rotors. Went out for road test and found that at 40+mph when applying brakes the whole truck shakes. So I think to myself it...	View
	2011 Ford Explorer XLT 3.5L coolin fans VIN: 1FMHK8D83B originally, came in for a p1285 cyl head over temp and p1289 cyl head over temp protection. quick diagnosis showed no fan operation. replaced fans and controler as an unit. now a p0480 cooling fan 1 circuit code. no info anywhere. fans work with ac on.	View
	2011 Ford Flex Limited 3.5L Suspension VIN: 2FMHK6DTXB Since tires were replaced customer has stated the rear of the vehicle seems to slide when hitting bumps at high way speeds (above 55mph). There seems to be no loose parts front or rear. My technician rode with the customer and noticed when hitting slightly rou...	View
	2005 GMC Sierra 2500 HD SLE 6.6L Seat Heater VIN: 1GTHK23225 Customer states seat heaters didn't work prior to a road trip and then started working. On the way back it quit again. When you press back/seat heater switch lights will come on then shut off right away. Does this on both driver and passenger side. All the fus...	View
	2012 GMC Terrain SLT 2.4L power liftgate VIN: 2GKALWEK6C Hello fellow IATNer's..before anything is said, this vehicle was an insurance write-off hence no warranty..BCM and liftgate module both re-flashed...vehicle collision in the front..everything else is functioning correctly (door locks, windows,seats,sunroof etc...	View
	2001 Honda Accord LX 2.3L computer sys VIN: 3HGCG66531 Vehicle won't run egr and o2 sensor monitors. We have checked the wiring and o2 sensor and found nothing wrong. vehicle has run several hundred miles since battery was replaced.	View
	2009 Honda Element EX 2.4L wheel speed sensor VIN: 5J6YH28799 After replacing right rear wheel bearing I have a code for open or shorted right rear wheel speed sensor.Sensor was damaged when wheel bearing went bad.I was going to replace sensor BUT I would like to know what triggers the wheel speed sensor?Looking in the h...	View
	2001 Infiniti I30 3.0L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on, long cranking interm VIN: JNKCA31A31 Ok so many of us are already very familiar with the Nissan and Infiniti Ddeaded P0505 Code. I replaced the IAC with a Hitachi Aftermarket IAC, sent in the PCM to Curcuit Board Medics they specialize in this ECU. When I got it back I installed on car started Id... Trouble codes: P0505 (Idle air Control Valve)	View
	1973 Jaguar E series 5.3L engine hello again. I cannot find a compression spec for this jag. it does run although poorly. the customer is selling this beast and the new owner just wanted a compression test. well pulled the plugs and did the test 40-60lbs is all I got. my question is what is t...	View
	1994 Lexus LS400 4.0L No Start VIN: JT8UF11E2R Car would not start when I received it. Checked fuel pump operation, found inoperable and replaced pump, now getting fuel. Still a no start, found no RPM signal, replaced CKP sensor, still a no start, checked for spark, none. Getting voltage to coils but no sp...	View
	1989 Mercedes-Benz 560SL 5.6L No Start, Poor Idle Quality VIN: WDBBA48D8K plz help u benz guys car will not start cold fuel pressure and spark is good ncust was told cis was bad by another shop big money what is the best way to confirm this or any other ideas thanks jimmy	View
	1999 Mercedes-Benz SL500 5.0L key fobs VIN: WDBFA68F9X need a little insight if you press key fob button to lock or unlock car ,,, directional light indicators inside dash blink but doors do not lock or unlock with key fob also center console will not unlock at all i have all good fuses and no codes on any...	View
	2009 Mini Cooper S 1.6L lf window VIN: WMWMF735X9 lh front window drop to open function not working properly. should drop appx. 3/4" when door handle activated. this window only drops 1/8". not enough for glass to clear frame. scoped off fuse for window. amperage draw is consistant with other front door which...	View
	2005 Saab 9-3 Linear 2.0L Traction Control VIN: YS3FB49S05 Thankyou all for your valuable time. This Saab came in for a diag of traction control light being on. Tech scanned and found code U2143-71. we exhausted all resources trying to find a definition of this code. We are pretty sure it is a communication code being...	View
	1991 Volvo 940 SE 2.3L No Start VIN: YV1KA8741M I have mitchel on demand.I can't get a definite location for the fuel pump relay.Also I would like to know if there is a tank fuel pump on this vehicle and why.There is a main in the middle of the car under carriage that is not getting power during crank.Fuses...	View
	1997 Volvo V90 2.9L Engine VIN: YV1965966V Hi Volvo Techs This Volvo v90 was brought to us having spent 6 weeks at a repair shop before it was fixed for non-running. The owner had it for a week before it failed to start. We find Volvo VST failed to communicate with ECM [PCM} or Immoilizer but can com...	View
	2000 Volvo S70 2.4L fuel system VIN: YV1LS61J1Y I run a small, one man shop; me. I will admit (before the vultures strike) that I do not have European software installed in my MODIS. I have at most five customers with European cars, the price Snap-On wants for that software is not economically intelligent f...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1994 Acura Legend GS 3.2L Transmission VIN: JH4KA8265R Thanks for all the help. As you guys said, I did replace the wrong sensors the first time around. after getting direction from you guys I replaced the electronic portion of the vss. Doing so fixed the speedometer but the d4 light kept flashing with the pcm sto...	12
	2004 Chevrolet Malibu LS 3.5L Rear VIN: 1G1ZT548X4 CLIENT DOES NOT HAVE THE FUNDS AVALIABLE TO REAPIR THIS CAR OR TO SPEND THE TIME TO DIAGNOSIS IT PROPERLY. THEY WILL BRING IT BACK WHEN THEIR FUNDS ALLOW	16
	2004 Chrysler PT Cruiser GT 2.4L No Start, MIL Lamp on, VIN: 3C8FY78G14 First of all., GOD BLESS AMERICA., OUR PRYAERS WILL BE WITH ALL THOSE IN BALTIMORE! Now, I would like to thank all who replied! A special thanks to Bill [...], who took the time to reply multiple times., to help try and figure out what was going on., Bill., I ... Trouble codes: P0340 (Cam sensor malf), P0335.	14
	1986 Ford LTD Country Squire 5.0L No Start VIN: 2FABP43F5G Thanks for all the replies.Car has been ok for 10 days now since I replaced the dist.I believe that fixed it but it has gone as long as a month without a problem in the past so I guess time will tell.Thanks again Mark	33
	2002 Ford Explorer Sport Trac XL 4.0L Poor Fuel Economy, MIL Lamp on VIN: 1FMZU77E52 Well after the 4th thermostat, we finally got this heating up to operating temp. I can't understand how 3 distributors managed to hit me with bogus parts, including Motorcraft. The last stat we put in was a motorcraft and it hit the operating temp. Could not s... Trouble codes: P0125.	6
	2006 Ford Explorer Eddie Bauer 4.0L `brake to trans.shifter in console VIN: 1FMEU74EX6 The customer chose to continue driving it after we cleaned all the debris and stuff out of the console area. We cleaned solnoid and regreased and put back together it was much quieter. I can not add any helpful information	3
	1994 Honda Prelude S 2.2L cooling fans VIN: JHMBA8141R first,thank you for all your suggestions they helped alot.i found bad corrosion in eng. compartment fuse box cleaned it up & replaced connectors that gave me better power & ground to relays.fans both work great now.thank you very much.	10
	2010 Honda Civic LX 1.8L Tpms VIN: 2HGFA1F58A Sorry for the delay. Thanks for the help. The day after I gave the car back, the vehicle went back to school with his son. They will let me know what happened as soon as he returns. I will let everyone know the answer soon.	6
	2003 Nissan Sentra GXE 1.8L MIL Lamp on VIN: 3N1CB51D33 After banging my head against the wall for several days...I decided it was a defective new intake assembly (lower intake includes swirl control motor and sensor) from Nissan. Exchanged it for a new assembly and works perfect. Trouble codes: P1138, P1137.	3
	1999 Oldsmobile Aurora 4.0L Charging VIN: 1G3GR62C4X Thanks guys for the info,yeah it was what I thought and a lot of you on here,a faulty reman alt,probity cooling fans drawing excessive current might have knocked it out along with the original,it's fixed now,charging well 14.1-14.2 with everything on and ac fu...	16
	1978 Porsche 911 SC 3.0L Poor Idle Quality VIN: 9112001270 I finally got back to this vehicle and found the fuel distributor bad again. I also bought some fittings to check the pressure test. Thanks a million to IATN you guys rock	8
	2006 Subaru Outback 2.5i 2.5L Hesitation, Surge VIN: 4S4BP62C76 thanks to all who replied the problem was it was 2 qts low on oil and wouldnt let the vvt activate but it never set a check engine light hope anyone that come across this will lern from my mistake	4
	2001 Toyota Camry LE 2.2L MIL Lamp on VIN: JT2BG22K61 Thanks for all the help, we repalced the Egr solenoid and problem solved. Trouble codes: P0401 (Egr insuffecient flow).	28
	1998 Volkswagen Beetle TDI 1.9L No Start, Hesitation, Cuts out VIN: 3VWBF61C4W Thanks to all that gave input on this problem. Well, after having fixed the glow plow issues and bringing the injection pump in time, we still had very bad throttle response. My next step was to check proper function of the EGR and throttle valves by applying ...	15
	1999 Volkswagen Jetta GLS 2.0L Engine actuators VIN: 3VWSC29M7X I found water in the ECM connectors. After drying them out and putting di-electric grease on them all is well. Thanks for the responses.	11

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