Automotive Technicians Technical Discussion and Fixes for Mar 22, 2012

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	Help Request	Answers
	2004 Audi A4 Quattro 3.0L low beams VIN: WAULT68E54 left front headlight was blown , replaced left low beam bulb and now have no low beam light operation. fuse is good , high beams work	View
	2006 BMW 525xi 3.0L running hot VIN: WBANF33566 car was towed in the car is over heating and running coolant temp is at 262f the fans are running on high upper hose is hot but the lower hose is warm it has a elc water pump can any one help out there on this bmw	View
	2005 Buick Terraza CXL 3.5L Abs,Tcs, Stab VIN: 5GADV33L25 Found that when going down the road with the scantool hooked up the vehicle began to go into a false skid/ABS activation after 10 miles of driving. I was recording the datastream when this occured and found that the yaw rate reading falsely went into 74 degree...	View
	2003 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y83 This nightmare came to us from another shop. Car had a miss and check engine light was flashing with a P0300. Found sparkplug wells full of oil and insulator boots carbon tracked. We compression tested engine, replaced all sparkplugs, valve cover gaskets, and ... Trouble codes: P0300	View
	1996 Chevrolet S10 LS 2.2L Surge, MIL Lamp on VIN: 1GCCS1946T Hi there guy's, I could sure use some of your advice and experience on determining what is wrong with this vehicle. The following vehicle has trouble code P0171=Fuel Trim System Lean. Freeze Frame Data is as followes: AF Ratio=14.6:1 Calc. Air Flow=36.73 g/s E... Trouble codes: P0171	View
	2000 Chevrolet Silverado 1500 5.3L No Start, Cuts out sorry see related history	View
	2001 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 1G1JC12451 Originally replaced rear main crank seal and rear camshaft plate seal. Vehicle came back with 2 codes - system too lean and oxygen sensor circuit codes. Found oxygen sensor stuck at 200 mv - replaced, cleared and tested at idle with no problems. Car came back ... Trouble codes: P0172 (System too rich bank 1)	View
	2001 Chevrolet Tahoe 5.3L Stall, extened crank VIN: 1GNEC13T01 tahoe will die sometimes hot or cold. and every other time you try to start it, it cranks for a while before it starts. replaced mass air flow under warranty and reading normal. flushed injectors again. ect and iat read within 4 degrees of each other on cold e... Trouble codes: P0101, P0300, P1133	View
	2001 Chevrolet Tahoe 5.3L Stall, extened crank VIN: 1GNEC13T01 tahoe will die sometimes hot or cold. and every other time you try to start it, it cranks for a while before it starts. replaced mass air flow under warranty and reading normal. flushed injectors again. ect and iat read within 4 degrees of each other on cold e... Trouble codes: P0101, P0300, P1133	View
	2002 Chevrolet Blazer LS 4.3L Hesitation, Poor Fuel Economy, MIL Lamp on, lack of power under VIN: 1GNDT13W52 my daughters car,it will not go away. she said on a long hill rpm's go way high,true. seems like it does not want to shift. call a tech at the trany shop,he said the shift is from the tpsensor. i own the same car i swapped the MAF sensors mines fine,hers still... Trouble codes: P0101	View
	2008 Chevrolet Silverado 3500 HD LT 6.0L backup alarm VIN: 1GBJC34K38 when Ignition is in the off position the alarm is active due to the fact that the LCM keeps all the lights active until the light sentry times out. Question, Is there better way to power the backup alarm other than using a tap to the backup light circuit? Co...	View
	2004 Chrysler Concorde LX 2.7L Ac Relay - PCM VIN: 2C3HD46R34 Help all Chrysler guys Todays Project in March believe it or not is a simple a/c engage problem driving me nuts this Chrysler has no code in the pcm or bcm this is manual a/c & has no HVAC codes. The bcm has no pid for the a/c off on switch on every scanner we...	View
	2008 Dodge Ram 1500 SXT 5.7L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1D7HA18298 SES p0339 ckp sensor intermittent, cuts out at times, replaced ckp & cmp due to cost (under $25 for Mopar parts). Watching ckp & cmp on lab scope do not see either drop out, but did notice that when checking 5v reference voltage stay at sensor for about 4 to 5... Trouble codes: P0339	View
	1997 Ford F-250 XL 7.5L oil pan VIN: 1FTHX26G8V Hi everyone, This truck has eaten my lunch and supper. Started out as a ft cover and oil pan gasket repair. Replaced pan gasket and leaked at rear. Decided to pull trans to make the pan r and r easier and inspection of rear throat more visible. After the sec...	View
	2001 Ford Focus Street 2.0L Electronic VIN: 1FAFP34391 Customer installed a 6 speed transmission in this vehicle that came out of a Focus SVT. When trans is plugged in the vehicle won't go over 40 mph. I have an IDS and have checked for programmable parameter for such and none listed but axle ratio/tire size. Is i...	View
	2003 Ford F-150 XL 4.2L No Start OK, this is some after hours work I was doing for a friend. Sucking air into the intake was giving him some lean codes, so we tore it down and replaced the intake gaskets. Now, the truck will not start. It cranks over fine and it seems that it wants to start. ... Trouble codes: B1359 (Ignition RUN/ACC Circuit Failure GEM/CTM)	View
	2006 Ford Explorer XLT 4.0L starting VIN: 1FMEU73EX6 no crank-instrument cluster is dead-i have crank power from ign switch to starter relay-no ground to energize relay. Everything else is working. I swapped the problem car pcm with a sister explorer-the good car didn't start, prob due to the antitheft, but the ...	View
	1999 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 1GTEK19T1X this truck is testing my patience. it was brought to me with a missfire and MIL on with code p0300. miss fire count showed #6 with the most counts. found injector connector had been damaged. i replaced all 4 injector connectors on bank 2. (soldered connections... Trouble codes: P0171, P0174	View
	2005 GMC Sierra 2500 HD SLE 6.0L HVAC control VIN: 1GTHC23U85 did AVR test,replaced battery,had memory saver pluged in but it went dead during battery replacement,now the dual control automatic heating air conditioning system will only blow defrost no matter where you set mode control.Would appreciate any help,thanks Sco...	View
	2003 Honda CR-V EX 2.4L Abs Sensor VIN: JHLRD78853 What test can we do at the wheel to test the signal at the wheel? We cannot find a test procedure to condemn that sensor. The sensors on the older Hondas put out a square wave but these are not the same. We are using a Snap-on Vantage Pro.	View
	2004 Hyundai Sonata 2.4L Surge, high idle 1500 rpms VIN: KMHWF25S54 car came in not running found no crank sensor signal. Upon replacing crank sensor found timing belt missing teeth. did compression test on cylinders 1,2,4 are at 150 cyl 3 at 110. Customer complain car surging and dieing before bringing in. Drive car until you...	View
	1991 Infiniti M30 3.0L Top VIN: JNXHF16C6M Hey Guys, I am in need of an electrical schematic for the convertible top on this 91 Infinity M30. The pump motor has power 12v on both wires, the fuses are good, there is no voltage to the switches (I think they are ground activated, the wires are all green)....	View
	2006 Jeep Wrangler SE 2.4L Coolant Temp VIN: 1J4FA29176 This Wrangler came to us after being to the dealer twice and a private shop 3 times for this problem. Code P0128 Coolant Thermostat Rationallity. Between the other shops they changed 3 thermostats, Engine Coolant Temp Sensor twice and both the Intake Air Temp ...	View
	2004 Land Rover Discovery HSE 4.6L Air ride VIN: SALTP19494 Customer previously had air ride removed and replaced with coil overs. Fuse has been pulled for compressor but the battery is still being drained by the actuator solenoids. I have foud through the wiring diagrams that if I remove ground C811 it should solve my...	View
	2002 Lincoln LS 3.0L Engagement VIN: 1LNHM86S22 Alright guys, I need some insight on this bugger of a Lincoln. We got an 02 Lincoln LS that was brought to us a while back with a harsh engagement/"kick" when shifting to forward or reverse. Once in gear it runs fine, all gears shift smoothly and when they're ...	View
	2003 Mazda 6 i 2.3L Steering wheel return VIN: 1YVFP80C43 This vehicle when turning hard right the steering wheel will not return to center. Have replaced three racks including a factory unit. Replaced right knuckle and wheel bearing also straighten frame about 3 mm not much..Dealer is scratching there head..	View
	1970 Mercedes-Benz 280SEL 2.8L Transmission shift VIN: 1090161200 Vehicle arrived with only low gear, would not shift. The owner indicated the transmission had been overhauled before, and that the car had been sitting for some time. Upon removal and tear down, we discovered that there were parts missing, installed incorrectl...	View
	1993 Mercedes-Benz 400SEL 4.2L Stall VIN: WDBGA43E4P Customer bought the car from an auction the car runs great till it warms up then it dies. It will start back up and run for a few seconds and stalls will not.run untill it cold. any ideals? I dont have a scanner to pull code but no check engine lights are on. ...	View
	2001 Mercedes-Benz E320 3.2L compressor VIN: WDBJF65J11 I have no compressor function. With Autologic I have no communication with A/C module and will not enter self diagnosis. Checked power and ground and replaced module with reman unit. Performed coding and now have communication but also have 2 hard faults, B122...	View
	2002 Mercedes-Benz C230 Kompressor 2.3L Poor Idle Quality VIN: WDBRN47J92 we have a c230 kompressor with faults for being too lean, watched fuel mixture values while driving and saw that it was adding fuel everywhere. long term fuel trim is at +18% checked fuel pressure and found 3.8 bar present. smoke tested vehicle and found no ob... Trouble codes: P0171, P0171	View
	2002 Nissan Altima 2.5L Cylinder Head removal VIN: 1N4AL11D02 I've never done a cylinder head on this engine. AllData claims 9.9 hours for cylinder head removal. However, they say that I need to drop the front sub frame to remove the oil pan and front cover to do this job. Seems like not enough time to do all that work. ...	View
	2005 Nissan Altima S 2.5L No Start VIN: 1N4AL11D35 Help!!, This car is making us crazy, same code out of three ECM'S ,what are we missing here? Thank's for any help. This car will start ,but a real long crank, then set's the code. G.T. Trouble codes: P0355	View
	2007 Nissan Maxima SL 3.5L Cuts out, MIL Lamp on VIN: 1N4BA41E57 Vehicle has no throttle respncse at times.if you take off slowly the car will accel but get hung up intermittantly.while graphing pedal sensors vs throttle valve its apparnt that throttle responce doesnt doesnt line up with pedal sensors.Under hard accel senso... Trouble codes: P0430, P0455	View
	2006 Pontiac Grand Prix 3.8L tempature indication VIN: 2G2WP55296 Greetings, Hope someone can help us on this one. Vehicle came in from an auction so we have no prior history on it. But initial problem was a heater core which was replaced. Now vehicles' tempature reading will read between half and 3/4 on the gauge and somet...	View
	2002 Saturn Vue 3.0L Right Rear Wheel VIN: 5GZCZ63B52 The right rear wheel will lock up just driving down the road without applying the brakes. It only happens occasionally. It takes 3 or 4 days of driving for it to occur. There are no codes stored in the ABS computer and no codes stored in any of the other compu...	View
	2005 Saturn Vue 2.2L Poor Idle Quality, Hesitation VIN: 5GZCZ43D65 this is a used vehicle we had sold it came in with check engine light on and runs rough. had code p2176a follow pinpoint test led to replace throttle body. we replaced throttle body. road tested seemed ok. we performed another road test and concern started aga... Trouble codes: P2176	View
	2006 Subaru Impreza 2.5i 2.5L engine VIN: JF1GG67666 engine has a very promenent ticking on left side. can hear it at an idle, gets louder as RPM increases to 3400 then stops. when driving there is very little ticking heard untill decell in gear at 3400RPM and under, if any load(throtle)is applyed the tick gose ...	View
	2009 Toyota Corolla XLE 1.8L torque converter clutch pressure solenoid VIN: 1NXBU40E79 After repairs, cleared codes and drove tested vehicle for a distance of 30 to 50 miles city and highway. Customer drove vehicle for 20 to 30 mile distance and check engine light came back on with same P2757 code. Need help to find solution to get rid of comput...	View
	1986 Volkswagen Vanagon Syncro 2.1L Cv Axle VIN: WV2XB0258G We work on alot of Vanagons and lately we have had 3 vans that came in with what sounds and behaves like worn CV joints. We have replaced the axle assys and the noise does not go away. We have tried new wheel bearings due to excessive play and that does not cu...	View
	1997 Volkswagen EuroVan Camper 2.8L MIL Lamp on VIN: WV3AH8709V Thank you in advance for any assistance. I'm trying to determine why there is no power to AIR pump. My Mitchel has no wiring diagram for it. The locator only says that pump relay is located above fuse/relay block. There are a number of relays up there but none... Trouble codes: 16795 (Secondary Air Injection Incorrect Flow P0411)	View
	2002 Volkswagen Cabrio GLX 2.0L cruise control VIN: 3VWDC21V42 hi need some help with this vw the cruise control is not working we replaced the module as it was green thinking it would fix it but still not working what i see is the vac pump is weak but will a bad pump stop power going to the vac pump i have never seen pow...	View
	2006 Volkswagen Passat Value Edition 2.0L Misfire, MIL Lamp on VIN: WVWGK73C36 Repeating PO303 misfir cyl 3 code, cannot verify misfire very intermitant, have replaced # 3 coil and spark plug,have swapped with other cyl,not sure where to go from here,any suggestions would be appreciated) Thanks for your time Trouble codes: P0303	View
	2010 Volkswagen CC Sport 2.0L Cooling fans inop VIN: 3VWHL7AJ5A Vehicle was in severe front end collsion. Repairs are excellent. We have no cooling fan operation and code PO480 stored. Power and ground are present on two larger terminals at cooling fans. KOEO power is present at one of the control wires and a rapidly pulsi...	View
	2000 Volvo S80 2.9 2.9L HVAC Panel VIN: YV1TS94D2Y Hi all - hoping someone can help me out pretty quickly - I've got to have this vehicle back to the customer by the weekend and my 3-day VIDA subscription runs out then, too! Basically here's the problem - this all started after a battery disconnect: The HVAC ...	View
	2001 Volvo S40 1.9L Air Bag VIN: YV1VS29521 Thank you in advance for any help. This car came in with the airbag light on. The only scan tool that I have that would get into that system is my Bosch KTS570. The code it gives me is 0137. (Sidebag ignition circuit, passenger side signal fault) I can't fin...	View
	2004 Volvo XC70 2.5L MIL Lamp on VIN: YV1SZ59H84 This car came in about 3 week ago and the customer said she was at the dealer and they said she needed a cat. I scaned the ecm and found codes P2187 Lean bank 1 and a P0420. I found a very large vacuum leak, I fixed that and cleared the code and had her drive ... Trouble codes: P0420 (Cat effiencey)	View
	2006 Volvo XC90 V8 Ocean Race 4.4L no start VIN: YV4CZ85296 hello the car came in on the hook car die and wont start wont turn over fuse #11 in side panel blown replaced fuse and blows as soon as you turn the key on tried to scan no data on any of systems like drive abs srs etc no dash light only light is air bag repla...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1996 Buick Regal Custom 3.8L Cooling fans VIN: 2G4WB52K8T Thanks for all the input. All of my service information says that one fan should engage at 212 deg, the other at 224. I had one engage at 224, and unplugged it to see if the other one would come on. It did at 230 degrees. I put in a new coolant temp sensor...	13
	1994 Chevrolet S10 Blazer Tahoe 4.3L Hesitation, Surge, Stall, Misfire VIN: 1GNDT13W2R Well Gregory you were dead on.I smoke tested this vechicle twice with out a sign of leaks but after taping off the air inlets and putting a vacuum gage on the dipstick nailed it!!!Once the intake was rmove the bottom part on both gaskets were wasted.Man this o...	22
	1997 Chevrolet Venture LS 3.4L Surge, Misfire, MIL Lamp on VIN: 1GNDU03E4V Well this one is going to be fixed, gonna do the head gasket,and check the cyl head,intake and plenum for cracks. Found coolant in #2 cylinder after a couple of cold soaks borrowed a boroscope and saw the top center of the piston clean as a whistle in an oval ... Trouble codes: P0300.	37
	2006 Chrysler Pacifica Touring 3.5L Starting VIN: 2A8GF68476 Thanks for the help- we had it towed to the dealer- anti theft system needed to be reflashed. Greg	3
	1988 Eagle Medallion DL 2.2L Idle VIN: VF1FF48E7J the other shop that dropped this french poodle in my lap told me they had the egr blocked off,after chasing my tail and finding out what was'nt wrong.i deceided to pull egr valve off, it was stuck open no plate blocking it off.i made a plate, installed under e...	7
	1988 Ford Ranger XLT 2.9L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1FTCR10T9J Good afternoon iATN.Well this one is fixed.Thanks to everyone for their time and replies.Many of you had said to check the fuel pressure regulator,egr and ect,but i had already had checked these items.I know these are common on these trucks.Good looking out.Ho...	18
	1989 Ford Ranger GT 2.3L Stall, MIL Lamp on VIN: 1FTCR10A2K Found water leak on right kick panel where the pcm is located. Took cover off pcm and found the green mold inside. Replace with a remand pcm and ran great.	3
	1996 Ford F-150 Eddie Bauer 4.9L MIL Lamp on thanks everyone for all the input.. i replaced the pcm with another napa/cardone then picked up a EVR circuit code, did not bother to chase that ghost of a code, purchased a used pcm and now problem is fixed..i would not reccomend a cardone pcm to anyone...lot... Trouble codes: P0443.	9
	2000 Ford Explorer Limited 4.0L 3rd gear VIN: 1FMDU65E1Y Talked to ocal Ford Tech and most said replace trans. Trans replaced and off down the road. Thanks for all replies	14
	2008 Ford F-150 XLT 4.2L Poor Idle Quality VIN: 1FTRF12298 HI, EVERY ONE. THANK YOU ALL FOR YOUR HELP AND TAKING TIME TO RESPOND TO MY REQUEST. THE PROBLEM WAS ECM AND THE GOOD THING IS THAT BABY WAS UNDER WARRANTY. CUSTOMER IS VERY HAPPY ABOUT THAT. THANKS AGAIN MATT Trouble codes: P0353 (Ignition coil primery wiring problem).	6
	2001 GMC Sierra 2500 HD SL 6.6L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1GTHK23171 Thanks for the help - replies. I explained the repaires needed on the vehicle and options available . Vehicle left here for three weeks . Customer picked up vehicle and paid for Test & Inspect time, did not say or mention returning to finish repair. Trouble codes: P0202, P0204, P1261 (ECM detects circuit fault related to high voltage cylinders 146or7), P1262 (ECM detects circuit fault related to high voltage cylinders 235or8).	3
	1992 Honda Accord LX 2.2L Idle VIN: JHMCB7658N vacuum line to trans mount was leaking I would like to say thanks for all the help	32
	2002 Honda CR-V LX 2.4L starter VIN: JHLRD68472 thanks all! // Most said to remove intake, most said it was still possible without. me being the type of guy that would rather do more in lue of cursing my ass out, i took off the intake. Plus with the intake off the starter is just starring at you like a new ...	15
	2002 Honda Civic Si 2.0L Stall, Misfire VIN: SHHEP33522 And the winner was...cam timing off. I could unplug either the cam or crank sensor and the engine would stay running, but I cound only get 2500 rpm's out of it. I checked the timimg marks and they were off a tooth. Replaced the tensioner and chain and all...	17
	2006 Jaguar S-Type 3.0L MIL Lamp on VIN: SAJXA01A86 Car has not returned-but the leak detection pump appears suspect-will post additional once returned/fixed. thanks. Trouble codes: P2406.	4
	2001 Land Rover Range Rover HSE 4.6L No Start yes this car one is running most of were rigth about the reproraming it needed a scan tool that can reprogram the key with the computer i wanted to try spare key but cust never provided tha car was sent to a shop that specialize on range rovers thank you guys... Trouble codes: 39 (EWS manipulation check), 148 (interface inmobilizer).	11
	2006 Land Rover LR3 SE 4.4L no start VIN: SALAD25496 Car went to dealer replaced the restraint control module ans reprogramed the computer all is good now thanks for the help	8
	2007 Lexus LS460 L 4.6L battery drain VIN: JTHGL46F47 I keep testing the car for three days. and everything look ok. what happen the costumer went out of town for a week and the battery got drain. the drain that this car had was normal. thanks everybody for the replies. i appreciate ur time and ur help.	9
	2000 Lincoln LS 3.0L MIL Lamp on VIN: 1LNHM86S7Y thanks to all who helped! Would have closed this sooner if not for ford special order parts.Once I got to the clock spring it was a breeze. Turned out to an open wire in the clock spring. Cruise control should have nothing to do with emissions, Thanks ford eng... Trouble codes: P1565.	3
	2000 Lincoln LS 3.0L MIL Lamp on VIN: 1LNHM86S7Y thanks to all who helped! Would have closed this sooner if not for ford special order parts.Once I got to the clock spring it was a breeze. Turned out to an open wire in the clock spring. Cruise control should have nothing to do with emissions, Thanks ford eng... Trouble codes: P1565.	2
	1980 Mercedes-Benz 450SEL 4.5L Slips 1-2, 2-3 VIN: 1090161200 I have had to re-open this case since the information given was incorrect. I apologize for the inconvenience, and want to thank those individuals who offered there help.	5
	2007 Nissan Maxima SL 3.5L Steering VIN: 1N4BA41E47 Needed the rack don't know what was wrong but Nissan rack fixed it	3
	2006 Volkswagen Jetta Value Edition 2.5L Vaccuum pump VIN: 3VWPG71KX6 Thanks to all who responded. I was hoping to see this customer again to fix this leak but he is still recovering from a big bill from when i first discovered this leak (back when i wrote this post). Anyway, i think i will try to disassemble pump and replace wi...	3
	2009 Volkswagen Routan SEL 4.0L 3rd row power folding seats VIN: 2V8HW64XX9 Finally found that the recliner motor shaft was binding and I was able to grab the shaft with pliers and free it up. Once I did that it worked as it should every time. The module was thinking that the the seat back was folded down and would not allow the recli...	None
	2001 Volvo V70 T5 2.3L Engine VIN: YV1SW53D81 I'm going to post this as closed.Hopfully no more leaks from front of motor.As of this point no leaks to be seen.I did replace the VVT hub as well as do a oil trap service.I have no pressure out of dipstick tube.Timing the exhaust cam by the book is confusing....	5

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