Automotive Technicians Technical Discussion and Fixes for Jul 29, 2011

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	Help Request	Answers
	2000 BMW 323i 2.5L abs/dsc VIN: WBAAM3341Y hello bmw techs help ? I got a 2000 323 i with an abs issue. when i brake light pressure the brake pedal slowly drops to the floor, only under a light roll from stop... I replaced the master cyl, abs/dsc unit 4 wheel brake pads ,checked calipers and hoses , ok...	View
	2001 Cadillac Catera 3.0L Brakes VIN: W06VR54RX1 Customer has a concern of a vibration when braking at highway speeds. During test drice, the vibration was felt at speeds above 60mph and it can be felt through the steering wheel. All run-out measurements are well within specs. All steering and suspension com...	View
	1999 Chevrolet K2500 Suburban 5.7L Atc Encoder Motor VIN: 1GNFK16R6X Hello everyone, I am dealing with a 99 Suburban that came in with a complaint of a the wheels binding and grabing when turning and the service 4wd light on, put up on lift and found that the 4wd was lock in all the time. Scanned the transfer case and found c03...	View
	2002 Chevrolet Cavalier 2.2L right turn signal VIN: 1G1JF52462 customers complaint is intermitant right turn signal operation. during test drive right turn signal may operate normal when requested or it may flash rapidly or even caus e the flasher to buzz. but it hasnt acted up in the shop. the bulbs have been replaced wi...	View
	2003 Chevrolet Silverado 2500 HD 6.6L motor VIN: 1GCHK23113 truck runs great but it will not restart until full cool down dont no much about the gmc lots of experience with 6.0 ford if it was a ford no codes like this one i would say must have a high preasure oil leak think yal rock first post i dont like my maf readin...	View
	2004 Chevrolet Malibu 2.2L Cuts out VIN: 1G1ZS52F74 Hi every body, i`m asking for your help. Other shop send this malibu with the problem that engine starts,runs for few seconds, then dies. They replaced body control module and theft control module, don`t made difference, the same problem is present. -accessed ... Trouble codes: B3031 (Security system controller in lear mode.), B3055 (No transponder modulation or no transponder.), P1631 (Theft deterrent start signal no correct.)	View
	2005 Chevrolet Cobalt LS 2.2L starting VIN: 1G1AL52F85 don't ever see it go above .3 amp draw..volts however stay at about 11.50 with all fuses out and relays..unplug blue connector on bcm and volts drop to zreo..if I unplug ing. harness volts drop to 9.5 but only with alternator also unplugged..any help would be ...	View
	2000 Dodge Ram 1500 Laramie 5.9L Poor Idle Quality VIN: 3B7HF13Z61 customer complains about rough idle when cold. and vaccum noise. so i did intake gasket which was depintly bad. but still has rough idle when cold. ignition new. plus wires cap and rotor. it runs great when warm. its just runs rough for a few minutes then smoo...	View
	2008 Dodge Charger R/T 5.7L air conditioning VIN: 2B3KA53H68 Car A/C doesn't seem to get very cool at times, the blower fan seems to have plenty of power no matter if its on "auto" or you set it manually . Radiator Fans are working, kicking up to high when commanded.compressor is working.pressures are good at 50ish on t...	View
	1996 Ford E-350 Econoline 7.3L No Start VIN: 1FDJE37F7T This van will crank and crank, but not start. I've found an issue with pin #90 on the PCM. This is a 5volt reference for a number of sensors. At the PCM, there is only 2 volts here! I have been disconnecting all sensors one at a time to check for an internal s...	View
	2000 Ford Taurus SE 4-Valve 3.0L Poor Idle Quality, Misfire VIN: F14SD14S8Y missfire is still there. this is the back cyl so hard to get to. checked comp. good 230 in all cylinders but number 5 had 200 still ok. has spark and injector pulse. did running comp and number 3 was 25 psi lower then number 4 cylinder. pulled upper intake and... Trouble codes: P0303	View
	2002 GMC Sierra 2500 HD 6.6L fuel in oil VIN: 1GTHK29132 truck was towed in for losing oil on the highway & oil pressure, found oil over filled due to fuel, no codes, & runs great {after i changed oil of course just to move it around the building} was wondering if there is any way to pinpoint fuel leak{s} under valv...	View
	2006 GMC Sierra 2500 HD SL 6.0L master cylinder VIN: 1GTHC24U76 This truck came in with a braking issue while stopping, from crusing speed the brakes are perfect, dont grab, make any noise or vibration. Just as the truck comes to a stop the pedal drops alittle bit as if the pressure is released somewhere, but the truck sti...	View
	2003 Honda Civic EX 1.7L MIL Lamp on VIN: 2HGES26703 Originally this car came in with a broken alternator bolt from rust, we replaced the bolt but battery light was on so we installed an OE alternator but light was still on and alternator was charging. My technician traced the problem to the multiplex control un... Trouble codes: P0116 (Coolant temp sensor range problem)	View
	2004 Hyundai Elantra GLS 2.0L No Start VIN: KMHDN46D44 Vehicle came in with complaint of hard to start and i found that after cranking about 20 times it finally started... Found code po335 and scoped ckp sensor and found it dropping the signal...replaced ckp sensor and all was well that day... Only after cool down... Trouble codes: P0335 (Ckp circuit problem)	View
	2004 Infiniti FX35 3.5L Stall VIN: JNRAS08U94 Good Morning, This vehicle came into our shop after a diagnosis from a Dealership. The vehicle will stall when starting after driving for awhile. If the throttle is depressed then the vehicle will stay running and will run fine. The dealer diagnosed this as a ...	View
	2001 Jeep Cherokee Limited 4.0L Misfire VIN: 1J4FF58S71 This is a strange one we have been dealing with this for a while. This jeep belongs the shop receptionist/cashier. Intermittently on hot days 85 degrees and up cylinder 3 will start to miss. After hot soak on restart is when miss starts at times reving engine ... Trouble codes: P0303	View
	2003 Jeep Liberty Sport 3.7L Cuts out VIN: 1J4GL58K93 This jeep is sort of driving us nuts It appears to cut out under load the Injectors shut down and it cuts out 1 sec latter the engine picks up like it lost the RPM signal New Crank Sensor failed to cure this scope on the Crank & Cam looks OK the Injector Pw se... Trouble codes: 300 (random missfire)	View
	1996 Kia Sportage 2.0L Excessive Emissions VIN: KNDJA7237T Hey guys. I recently repaired this kia sportage downstream o2 sensor harness for the low voltage fault they commonly get at the harness. After clearing codes unable to reset ANY monitors. Have driven over 200 miles over a week and NO luck. followed drive cycle...	View
	2003 Kia Sorento EX 3.5L sunroof VIN: KNDJD73303 replaced motor and the over head console switch and still the motor is only working for tilt only which is more than it was doing before, the issue is getting the correct diagram	View
	2004 Land Rover Discovery HSE 4.6L MIL Lamp on VIN: SALTP19454 Hello. I have a P0441 code that keeps coming back. I've replaced the canister (due to some fuel that came out of it when I inspected it)and the purge valve. I've remove the leak detection pump and activated it on the bench and the vent shut valve, all seem ok.... Trouble codes: P0441 (Evap purge flow no flow detected)	View
	1993 Mercedes-Benz 400SEL 4.2L Starting VIN: WDBGA43E5P Customer complaint was no AC. Reg customer well maintained car. Removed Ac compressor to be sent out for rebuild. Started car with belt off and moved out of shop until compressor returned. When compressor returned tried to start car to bring back into shop, No...	View
	2002 Mercedes-Benz S430 4.3L Unknown VIN: WDBNG70J42 Vehicle will not shift through the gears, is stuck in 1st (or possibly 2nd), also the W/S button does nothing, it is stuck in the S mode. Recieved code P2065 (supply voltage to solenoid valves fault). I have only 4.0 volts at the ETC (transmission) module pin ...	View
	2007 Mercedes-Benz ML500 5.0L driver door lock VIN: 4JGBB75E07 drives door lock acuator doesnt function, all the other locks works from drivers door and their doors,remote key works on all doors except the drivers door.	View
	2007 Mercedes-Benz E350 3.5L serpentine belt VIN: WDBUF56X57 hello mbz friends, vehicle came in with a bad drive belt, the back side of the belt is blistered. removed the belt and checked the idler pulleys, spun the bearings and other pumps, all felt good. replace the drive belt, the same thing is happening to the belt,...	View
	1991 Plymouth Laser RS 2.0L Surge, Cuts out, Stall VIN: 4P3CS44U9M Thanks in advance for this. The customer complained that it stalled once and the check engine light came on. She was not sure if it came on before or after it stalled. Also complaining of high idle cold and cut out/surge during warm up. I scanned it and got co... Trouble codes: 44 (Ignition coil curcuit)	View
	2000 Pontiac Grand Am SE 2.4L Poor Idle Quality VIN: 1G2NF52T9Y I have this Grand Am that has poor idle when hot, sft are high 20 & o2 reading is high .9v , I tried swapping map sensor, checked temp sensors ok , fuel pressure about 35 psi bleed down drops about 5-10 right away then holds, no misfires shown on solus. I have... Trouble codes: P0172	View
	1988 Porsche 911 Turbo Carrera 3.3L Hesitation VIN: WP0JB0939J Hey Porsche Gurus. This air cooled 911 Turbo came in with driveability issue when engine is cold. We have hesitation when engine is cold. once warms up, most of hesitation goes away. However, still sluggish until Turbo kicks in and then it becomes a wild thing...	View
	1996 Subaru Legacy Outback 2.5L 3-4 shift VIN: 4S3B6685XT verified tps signal to tcm and ecm verified front and rear speed sensor signal at tcm . will shift into 4 th gear with tcm disconnected and voltage applied to shift solinoid 1. tcm appears to be operating shift solinoids properly but no shift into 4th gear.	View
	1996 Suzuki Sidekick JX Sport 1.8L Poor Idle Quality hey everyone one got kinda a wierd one. Have a 96 suzuki sidekick with a 1.8L come in with a code p0102 mass air flow sensor circuit low input sure enough voltage going in none going back to computer. changed the sensor but now it dosent idle properly. smells ... Trouble codes: P0102	View
	2000 Toyota Camry LE 3.0L Power Cut Of VIN: 4T1BF28K8Y Car stall many times with customer. Test the alt 12.65 volts replace the alterrnator with a remain one same voltage reading 12.65 . Add another alternator voltage reading 13.70 vlt. Customer took the car while driving yesterday car stall like power cut off som...	View
	2000 Volkswagen Passat GLS 2.8L Hesitation VIN: WVWMD23B3Y I have this 2000 VW Passat that misses when cold. (check engine light flashes, misfire 1 and 4 cylinders) Once at operating temerature it runs great. I can clear the check engine light and and it will not return until cold again. I have checked compression (13... Trouble codes: P0300, P0301, P0304	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1996 Audi A4 Quattro 2.8L no injector pulse and no spark VIN: WAUEA88D1T barrowed factory manuals from vw/audi dealer wile testing i found two plugs that were back words. also found spark module corroded on both side of module. preveus customer wrecked vehicle on passanger side. insted of reolacing air box he decided to put a cold ...	8
	2004 Audi A8 Quattro L 4.2L a/c VIN: WAUML44E94 This car was really making me crazy, I replaced resistor that fixed the problem "blower inop. when sit out the hot sun for 2 hours" but when you drive the car it will quit & every time you turn right the blower will come on, go straight it quits, I finally rep...	3
	2006 Audi A4 Cabriolet 1.8L shifter VIN: WAUAC48H76 Hello, folks. My Audi went back to the dealer. The customer is going to try to get some warranty out of them.[good luck on that] She is still choking on the price of the part. As some of you stated, the PRNDL sw. is in the trans module, and not serviced sepera...	7
	2000 BMW 323i 2.5L Oil warning light VIN: WBAAM3344Y Thanks for all the replys. We replaced the oil level sensor in the bottom of the pan and that seemed to take care of it...learn something every day.	16
	2002 Cadillac DeVille DTS 4.6L prndl VIN: 1G6KD54YX2 Thanks for the help guys ,Juan was right on the plastic link was broken bought one at the dealer and installed.Car is fixed &running fine.Thanks iatn and all the replys to this problem.	9
	2003 Chevrolet Silverado 2500 HD 6.0L Reverse Gear VIN: 1GCHC24U63 did install latest software in pcm, fleet customer, needed vehicle, the trans is still under warranty	5
	2001 Dodge Ram 2500 8.0L Tcc VIN: 1B7KF23W31 Thanks Kent! Echlin (napa) tps was no good out of box. Replaced w/Borg Warner piece and problem fixed.	10
	2004 Dodge Ram 1500 SLT 5.7L Leak VIN: 1D7HU16D64 Thanks guys im glad I wasn't the only one that has seen this one. Unfortunetely my custumer hasnt owned the truck long so we will never no what kind of fuel was put through that thing. I have seen improper fuel do some crazy things. Trouble codes: P0442 (Evap leak).	7
	2007 Dodge Caliber SE 2.0L filter VIN: 1B3HB28B37 We found the filter for this through transtar. the part number is A33013N. The phone number for transtar is [...].	3
	2000 Ford F-550 Super Duty XL 7.3L Cuts out VIN: 1FDSF57F5Y Thanks guys for all the help, unfortunantly the vehicle is still broke, all of the ideas: fuel pressure, checking all the 3 wire sensors for failure ( shorting ) have not panned out. I have ohmed numerous ecm control wires and found some bad connections and so...	16
	2002 Ford Ranger Edge 3.0L Poor Idle Quality, High idle VIN: 1FTYR14U52 well... the fix is nothing was really wrong. The idle staying at 1200-1500 on decel appears to be normal. His decrease in fuel mileage can be explained by the additional ethanol added to fuels in this area. It took about an hour of talking to the customer w...	9
	2003 Ford F-250 Super Duty XLT 6.0L MAFq VIN: 1FTNW24ED3 Hi guys,as always IATN has been a great help.I got some good info and found an open in the maf signal circuit at the harness connector,after many long lost hours we got it running good,Thanks again to all who replied	7
	2006 Ford Fusion SE 2.3L Hesitation VIN: 3FAFP07Z6R Well after some coaxing.We put a SAI pump and relay on it and all is well.Dont know why Sai would have anything to do with that but it did.Thanks for the reponses.Chris Trouble codes: P0128 (coolant thermostat), P2258 (Secondary air control circuit high), 0000 (trans and throttle lamp on).	3
	2004 Jaguar X-Type 3.0L MIL Lamp on VIN: SAJEA51C84 I did not realize that this system uses air/fuel sensors for the upstream sensors.I was not getting the 3 volt signal on the purple wire of sensor 2/1.Ohmed out wiring between ecu and sensor and found that someone had poorly repaired the wires going to side 2 ... Trouble codes: P1647 (ECM HO2 sensor controlbank 2 upstream).	6
	2003 Jeep Liberty Sport 3.7L Compressor VIN: 1J4GL48K63 Okay, we have a fix. There was so much metal debris in this system that it quickly clogged the new orifice tube and restricted the flow, resulting in excessive pressure and blowing out the back of the compressor. The condenser is free of restrictions. We have ...	19
	2003 Jeep Liberty Renegade 3.7L a/c VIN: J4GL38K53W well!!! it all comes down to basics. Ididn`t verificatede complaint till today. I went and drove the jeep till started to act up. then i found out that the compressor was indid stopping working. I found that theclutch coil will stop working wille driving. It w...	6
	2004 Jeep Liberty Sport 3.7L No Start VIN: 1J4GL48K24 Well I feel kind of silly since I was sure I had tested all the fuses. I had a hard time accepting that the pcm just died. Unfortunately, in a one man shop you some times get pulled away from a job a few times and loose train of thought. After I got the other ...	4
	1999 Lincoln Town Car 4.6L cylinder head VIN: 1L25FT365G I'd like to thank everyone that replied. Overwhelming response to remove the motor. That is what we ended up doing. Definitely an easy engine to R&R not to mention that doing the heads with the motor on the stand was a piece of cake; especially since you have ...	7
	2002 Lincoln Continental 4.6L Ride Control VIN: 1LNHM97V42 snapon modis would not set the air ride reset had to bring to dealer. will be looking for a new scan tool	3
	1997 Mercedes-Benz E420 4.2L Blend Door VIN: WDBJF72F7V It was low on a/c charge. it had a 1/2 a lb. charged to 2.62 and it works great. One problem is the customer is a surveyor/engineer, and listening to him made me believe that there is something wrong with the blend door. checked duo valves, they worked as supp...	7
	2004 Mercedes-Benz E320 4Matic 3.2L Compressor VIN: WDBUH82J84 Problem was fixed with scanner.thanks for all the help.	4
	2004 Nissan Sentra S 1.8L Misfire, MIL Lamp on VIN: 3N1CB51D64 Thank you David, Benoit, Steve and Dave. It turned out to be a bad ground where the negative cable attached to the transaxle. It appears that the grounding bolt was gauled at the factory, and just not quite tight enough. We had almost 2 volts loss, battery t... Trouble codes: P030?.	5
	1993 Pontiac Bonneville SE 3.8L master cylinder VIN: 1G2HX53L8P The modulator had an internal leak. It was replaced and the problem is gone. Thanks for all the helpful replies!	7
	2001 Saab 9-5 2.3t 2.3L backfire or popping VIN: YS3ED58E21 We found a broken bolt on the turbo it had been replaced at the dealer under warranty. we replaced the clamp at the throttle body and a new quick release at the valve cover and we havent had any other problems in over a week .l Just must have been multipul lo...	8
	2003 Saturn L200 2.2L rear drums VIN: 1G8JU54F43 First of all thanks to everyone who replied with help. We installed new drums in the rear and test drove vehicle back and forth from work to home and back for a couple of days thats why there wasnt any response on my part. glad to find out there is no more hor...	9

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