Automotive Technicians Technical Discussion and Fixes for Jul 14, 2007

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	Help Request	Answers
	1995 Acura Legend GS 3.2L compressor VIN: JH4KA7688S 1995 Acura Legend, 3days ago I started working the A/C on this car. I have checked the A/C compressor, condensor fan, fuses, freon, and replaced exspanion valve. The AC works very good at night and in rainey weather. However, during the daylight hours at 80 ...	View
	1998 BMW 318ti 1.9L Misfire VIN: WBACG8327W We are getting a misfire from the #4 cylinder under load. It happens most of the time but not always. Shutting the vehicle off and restarting will affect the problem. Several times the miss came back after restarting the vehicle. We switched plugs and wires th...	View
	1998 Chevrolet Corvette 5.7L No Start, Stall VIN: 1G1YY32G1W This Corvette would not stay running for the customer. Stalled when put in gear and the column lock message appeared again. We read that GM was having trouble with the relay, so we installed another one and it started and ran fine for one day. The following da... Trouble codes: P1626 (anti-theft system fuel enable circuit), B2587 (column lock/unlock open or ground), B2723 (passkey detection circuit open or shorted), U1096 (undocumented), U1016 (undocumented)	View
	2000 Chevrolet Tahoe LT 5.3L heater core VIN: 1GNEK13T4Y sloshing in heater core can be heard on excelloration.	View
	2001 Chevrolet Express 3500 8.1L a/c system VIN: 5B4LP57GX1 Customer bought vehicle that has been sitting in storage for some time. This Vehicle is actually a winnibago motorhome. When it came in there was no fron in the system checked for leaks found a/c compressor leaking. replace a/c compressor with a delphi unit. w...	View
	2002 Dodge Ram 1500 Van 5.9L instrument cluster VIN: 1D7HA18Z12 Instrument cluster does not work at all. No brake lights, turn signals, hazards. Scanned for codes and got a P1687. No MIC BUS messages received. I am using Solus 6.1. Alldata says to measure resistance of PCI Bus circuit between PCM harness connector and the ...	View
	1994 Ford F-150 XL 5.0L Poor Idle Quality VIN: 1G25FR255D Hi there my fellow repair wizards. First of all this is NOT a Ford truck! It is a 1994 boat with a FORD 5.0L multiport fuel injection system that has the OBD1 diagnostic plug (EEEC4?) It is very simular to an F150 truck engine but with no O2 sensors. Fuel deli...	View
	2003 Ford F-150 XL 4.6L MIL Lamp on this the story.mobile mechanic brought this vehcile to me.he said at idle has a slight rough idle and ses lamp on.per dtc 2 bank rich.he replace 7-8 injectors and 02 sensor.i looked at scan tool pids and LT fuel trim for bank 2 at -29 and LT fuel trim for bank... Trouble codes: P0175, P0357	View
	2000 GMC Jimmy Diamond Edition 4.3L 236 t-case VIN: 1GKDT13W1Y eating my lunch big time customer says this has not happened before but we found the vac line was off so the system was not working right to being with but it is still my problem thanks for any help art	View
	2000 GMC Sonoma SL 2.2L MIL Lamp on VIN: 1GTCS1959Y This customer has a problem with his service engine soon light coming on and we found, on two different occasions, codes P0178 & P0179. These codes are new to us because it is only for Flex Fuel models and they are not common around here yet. We priced out a n... Trouble codes: P1078, P0179 (Fuel Composition Sensor High Voltage)	View
	2002 Hyundai Sonata GLS 2.7L No Start, Cuts out, Stall, Misfire VIN: KMHWF25H52 car came in whit a no start condition po 335 crank sensor , replace crank sensor runs for 10 minute and stals , crank ,no start , again check crecuit whit load ok good ,groud , and 12volts present at the sensor conecter check signal wire yellow if short to gro... Trouble codes: P00, 335 (crank sensor)	View
	2000 Infiniti I30 3.0L Hesitation, Stall, Misfire, MIL Lamp on VIN: JNKCA31A6Y Hey techs, this is my first post so hopefully someone can point me in the right direction. This I30 came in with a concern of no power on acceleration. I drove the car & confirmed almost anything past half throttle and the car would start losing power unless i... Trouble codes: P0300	View
	1997 Kia Sportage 2.0L abs light VIN: KNDJA7237V customers states that the ABS light comes and goes. when light is on A/C is inopp and power windows inopp. also can not get the codes to flash by grounding connector. any idea's ?	View
	2002 Mercedes-Benz C180 1.8L starting system VIN: WDC2030352 Hello everyone,this car was towed in not starting ,scanned with carsoft and after discussions with local techs every thing points to a faulty electonic ignition switch,an apparent common fault, some of the data also points to problems in the front signal acqui...	View
	2000 Mercury Mountaineer 4.0L Stuck in 4WD low VIN: 4M2DU76E7Y Greetings all. This Mountaineer is stuck in 4WD low and the 4WD indicator lights are off when the 4WD switch is turned to "Auto". The 4WD "High" light will come on when switched to high. But when it is switched to 4WD "Low" the light continues indicating 4WD "...	View
	2000 Nissan Quest GLE 3.3L Hesitation VIN: 4N2XN11T5Y i have some power loose and a bad flat spot at low rpm most data looks normal with the following specs that are not normal b1s1 o2 sensor looks normal 3.5 to 6.5 millavolts. b1s2 o2 sensor is always 7.0-8.2 millivolts. stft always rears - 15 to -18.5. ltft awa...	View
	1999 Oldsmobile Intrigue GL 3.5L Cuts out, Stall VIN: 1G3WHS2H52 orignally car came in with code 336 so the tech replaced crank sensor and ran pin out test as per alldata, checked serial data on scan tool and found crank sensor still on time b.did crankshaft relearn, and cancelled the ck/eng light,but still on time b ordere...	View
	1996 Plymouth Grand Voyager SE 3.3L trans VIN: 1P4GP44R0T This is my personal car, I am a Saab guy and have only generic scan tool support. My trans slips and sets p0720. I was driving on the highway at steady speed (60-65) and the trans started slipping with no warning. The MIL came on at the same time. There was n...	View
	1972 Pontiac lemans 350CID Poor Idle Quality VIN: 2D69M2P198 I am posting this for a friend. If you pull off plug wires, on number 1 cylinder, the car seems to run almost the same. The other wires make a big difference when they are pulled off. Tried swapping wires with no difference. All plugs look like they are firing...	View
	1986 Pontiac Firebird 2.8L fuel pump VIN: 1G2FS87S4G I have 1986 firebird that has no voltage at fuel pump. I cannot find the fuel pump relay, prime connector, and wiring diagram shows a fuel pump switch w/ 2 wires going to it a hot at all times orange wire and coming out is a tan/white wire, not sure where it i...	View
	2000 Pontiac Grand Am GT 3.4L Poor Idle Quality VIN: 1G2NV52ESY Hello fellow technicians, This is a used car I bought for my 16 YO daughter, but I am not much of a GM tech. I work on Subaru's. But I jsut replaced the intake manifold gaskets and now intermittently when driving down the road the idle doesn't drop back down i...	View
	1999 Volkswagen Passat GLX 2.8L abs, brake, oil lights on i/p VIN: WVWPD63B6X vehicle came in for front brake repairs. a few days later customer came back stating abs light was coming on. we inspected vehicle. found no issues with wheel speed sensors or wiring. pulled sensors out and cleaned them for good measure. unable to retrieve cod...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1995 Cadillac Eldorado 4.6L MIL off KOEO VIN: 1G6EL12Y9S After take out the instrument panel we found all light bulbs ok . After re-install the panel we found that the light come on for a milisecond very close to the point where the switch will crank the engine .This seems to be ok on this kind of vehicles . Specia...	3
	1989 Chevrolet S10 2.5L No Start VIN: 1GCBS14E8K Thanks to everyone that offered advice. I tried everything to communicate with the truck, even borrowed and old red brick scanner and nothing. The truck needs an ECM before I try to diagnose other problems, and as I said before, the truck is just not worth f...	12
	1999 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 3GNFK16R9X thank you for the quick response. i recieved replies within the hour that led me in the right direction. the vehicle was not running lean during the missfire telling me the lower than normal fuel preasure was not the offender. i pulled the dist cap off and fel... Trouble codes: P0300.	14
	1999 Chevrolet Silverado 1500 5.7L abs VIN: 2GCEK19T0X Well in my attempt to help a friend a lot of things were overlooked. #1-left front caliper that was replaced was wrong caliper, f#*k. The truck is a Silverado edition not a regular pickup. #2 The car lot that he purchased the truck from sold a truck that was s...	10
	2003 Chevrolet Express 3500 6.0L Starting VIN: 1GBJG31U73 Thanks for the info. I have fixed this truck. THe password had to be relearned. The prcedure is as follows. 1. Attempt to sart and leave the key on 2. wait 10 minutes untill the scurity light goes out. 3. cycle the key of for 5 secounds 4. repeat steps 1 -3 ...	7
	1999 Ford Windstar 3.0L no lights VIN: 2FMZA51U7X Thank you to those that have replied. I had a former tech who is a whiz at these things stop by for a look-see. He found a corroded pin on the power distribution box located by the interior left kick panel. All is well. Thankyou	9
	2004 Ford Taurus LX 3.0L can't read monitors VIN: 1FAFP5U24G Hi techs, The Taurus is inspected and out the door. Keith,Boyd,Sean,Tom,George, & mike, Thanks for all your suggestions. My modis did read the PIDS, However it would not read global, for the readiness monitors. Yes it is a CAN system and it did require 7.2 ...	8
	2005 Ford E-450 Super Duty 6.8L Poor Idle Quality, no acceleration VIN: 1FDXE45S86 This vehicle is still running in the same condition. Fuel pressure is good and steady. The driver doesn't complain because the vehicle does accelerate fine in drive.	4
	2002 Honda Civic EX 1.7L No Start VIN: 1HGEM2299L Well at least i know im not crazy, after rechecking everything and making sure all my scan data was good again i decided to test the fuel. Pulled some fuel out and tried to light it and it wouldnt burn. Smells kind of like a diesle gas mixture. Cleaned the tan...	7
	1998 Land Rover Discovery LE 4.0L Cuts out, Stall VIN: SALJY124XW Thanks to all who replied. I found the integrated relay module was defective. The relay that powers the injectors was dropping voltage as the engine reached operating temp. The part was in stock at the local dealer. After replacing the module, all of the sympt...	4
	2002 Mazda B2300 2.3L Hesitation VIN: 8YTDR23CX3 the conectors of the oxigen sensor are ok. I am waiting for a new sensor and the customer to bring back the truck. Thanks to all for yor help	3
	1975 Mercedes-Benz 230 2.3L Misfire VIN: 1150171204 Many helpful replies came in quickly. I thank you guys for your timely help. Valve clearances were fine as was the carb dashpot diaphram. Turned out to be an issue with the coil & wires. I was surprised about the plug wires because the engine had to heat u...	9
	1998 Mercedes-Benz E300 3.0L engine VIN: WDBJF25F5W After reading the six replies and pressing the car owner for more details of the flooded roadway I convinced the car owner to notify his insurance company - which he did once he heard the potential cost of the repairs. I think the car moving forward into the ...	6
	2002 Mercedes-Benz C240 2.6L No Start, lack of power VIN: WDBRF61J92 Hello MB Techs I apologize for the delay on closing this post, but I wanted to report exactly about the fix on this vehicle, after much pain and sorrow, we discover that the tech that installed the transmission on the engine, placed the flywheel spacer betwe...	9
	1999 Mercury Sable GS 3.0L compressor VIN: 1MEFM50U8X WELL I HAD 1 REPLIEY THAT FROM GLENN FARREL THAT SAID MY COOLANT MIGHT BE LOW...WHAT I HAD WAS A BAD COOLANT TEMP SENSOR... THANKS TO ALL THAT TRYED TO HELP	7
	1987 Nissan 300ZX 2+2 3.0L No Start VIN: JN1HZ16S0H Thanks to every one who replied!! It turns out it was the ECCS control unit, We did replace it I didn't want to just run a new ground for fear of a fire after a crash (like John stated in his reply) iATN is # 1 Thanks Joe [...]	5
	1997 Nissan Altima GLE 2.4L Charging VIN: 1N4BU31D8V thanks, guys for your help on this. when i went to power probe this thing, not only was the circuit hot, it blew the fuse. confusing? i thought so too. i couldn't condemn the ignition switch because there wasn't enough evidence to support this. i checked the h...	8
	1999 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA21D7X Thank you to all of you that have replied. I removed the throttle plate assembly & removed the egr tube. It was clogged w/carbon. Cleaned it out & replaced. Called the customer the other day & car is running great and NO CHECK ENG LIGHT. Again, thank you men. Trouble codes: P0400.	8
	1999 Oldsmobile Intrigue GL 3.5L Blows A/C fuse VIN: 1G3WX5248X Some said the diode may be bad, and others said the clutch coil may be overdrawing... So I just swapped the compressor for another unit... That makes 3 now... so far so good... we'll see what happens...	8
	1993 Plymouth Grand Voyager SE 3.3L No Start, Stall VIN: 1P4GH44R2P thanks, guys for your advice. i replaced the cam sensor and it ran on three cylinders. i ordered another one and it runs great. this tells me that there is an issue with not only the o.e. parts but even the replacement parts on this vehicle. other makes and mo...	6
	2002 Pontiac Sunfire SE 2.2L No Start VIN: 1G2JB12482 CHRIS WAS RIGHT. IT HAS BROKEN TIMING CHAIN GUIDE AND SLIP CHAIN ABOUT 30 DEGREE. REPLAQCED TIMING TENSIONER AND GUIDE, CHAIN AND SPROKETS. THANK YOU TO ALL.	8
	1995 Toyota 4Runner SR5 3.0L MIL Lamp on VIN: JT3VN29V6S most said chewck sensors in dist which show a ggod wave pattern. Oner said may not be strong enough. Customer is going to get a used dist. we had already tried 2 ecms. Thanks to 5 who treid to help. Joe Trouble codes: 12 (no rpm signal during cranking).	5
	2002 Toyota Avalon XL 3.0L Communication Error VIN: 4T1BF28B62 Well you nailed it right on the head, there was an evap code in the PCM. Fixed that problem (VSV) cleared all the codes and we have communication again. Thanks for the help.	3
	1999 Volkswagen Jetta GLS 2.0L Compressor cuts off at idle VIN: 3VWSC29M8X sorry guys it took so long to reply.. took the car to the dealer they did the idle adaption,and the car was fine after that..scott,steve,richard,and stanley thanks for the time and steps...	10
	2004 Volkswagen Touareg V6 3.2L oil service VIN: WWWZZZ7LA4 Hi, all techs: Thank you all replies, especially Eric from Washington. Use VAG-COM and enter Instrument cluster (17) adaptation 2, set to 0.	3
	2006 Volkswagen Beetle 2.5 2.5L Temp warning light VIN: 3VWRF31Y36 Almost every body agree that the best solution to this problem is to replace the Reservoir tank and the sensor inside this tank . Thank's to all of you guy's . Is very nice to have some body behind sharing knowledge . Is nice to know that I'm not alone . Reall...	11

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