Automotive Technicians Technical Discussion and Fixes for Jul 13, 2012

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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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	Help Request	Answers
	1986 Alfa Romeo Spider Graduate 2.0L powertrain VIN: ZARBA5410G I need a wiring diagram for the ECU, injectors. I have a manual with diagrams but it is incomplete. I have fuel pressure, spark, but no power or pulse to the injectors. Fax # [...] Thank you, Jon	View
	2001 Audi TT 1.8L Accessories VIN: TRUTX28N71 none of the switches in the center counsel work,there is the trunk and gas switches at the front of counsel and the door lock and soft top switches at the rear of the counsel,all fuses check out not sure what runs these things.as we know alldata and identifix ...	View
	2003 BMW 325Ci 2.5L converter lockup VIN: WBABN73443 Hello all and thanks. Buyer's checked this coupe ten days ago, A/T function OK (I specifically noted that TCC engagement was Ok as I have seen the no-lockup problem and codes P0740 & P0741 with torque converters before). Now the car has several symptoms not pr...	View
	1997 Buick Skylark Custom 3.1L Anti Theft, Headlights, Warning Lights, Cluster VIN: 1G4NJ52M2V Vehicle sent here from another shop, problem not found. Engine will crank, start then immediately stall security light is on steady perform a 10 minute relearn, the vehicle started and drove it into the shop disable the aftermarket remote starter and secur...	View
	1993 Cadillac DeVille 4.9L No Start VIN: 1G6CD53B0P Morning to everyone. I am looking for some help on the above vehicle. Vehicle was towed in with a no start condition. Originally had no power/no crank due to loose connection @ battery. After fixing this - car will crank and fire for a split second and die - w... Trouble codes: 58 (Pass Key Fault)	View
	2000 Cadillac DeVille DHS 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KE57Y5Y Hello all Just got done doing head gaskets and timeserts started vehicle and noticed right away that it had a misfire at idle and the MLS light was on. Increased rpm to around 1800 and noticed engine smoothed out. Checked for a misfire with the scanner, code p... Trouble codes: P0300, P0436	View
	2003 Cadillac CTS 3.2L ignition, shifter VIN: 1G6DM57N13 Car came in with intermitent no start. after checking power to starter and starter signal, I thought it was ignition switch because I wiggled the key while in cranking position and it started. After replacing the switch new problems arose. The key will not com...	View
	1996 Chevrolet C1500 Cheyenne 5.0L driveshaft VIN: 2GCEC19MXT hey tech working on a pickup 96 c1500 2wd came in with a driveline vib at 45mph on the dot leaves at about60 mph pulled shaft had balanced still there but not as bad im scrachen my head any ideers	View
	2004 Chevrolet Trailblazer LS 4.2L Vibration VIN: 1GNDS13S94 When sitting and driving picks up a vibration at 1200 rpms and gets better around 2000 rpms and then starts returning above 2000 rpms	View
	1997 Dodge Grand Caravan SE 3.3L trans VIN: 2B4GP44R2V hello all need help i have a 97 caravan it first had a converter shift sileniod code so i replced the pack in front of trans with a updated one and the check engine light went off then drove it for 30 miles and codes 38,74,75 popped up van is also going into l...	View
	2005 Dodge Ram 1500 SLT 4.7L No Start, Cuts out, Stall Truck stopped running on customer while driving. Truck was towed to my shop. Check engine light was on. Scanned code was for egr. Truck started fine and idled fine. Allowed truck to idle for a long time. No problem. All guages normal. Checked fuel pressure for...	View
	1992 Ford Explorer Eddie Bauer 4.0L Excessive Emissions VIN: 1FMDU34X9N allright all you ford techs, here goes have this explore that came in pouring fuel out exhaust and blowing smoke. first checked fuel injector pulse and only right bank has pulse. left bank is constantly powered up. checked from ECA and no power coming out of E...	View
	1997 Ford F-150 Lariat 4.6L turn signals VIN: 1FTDX1861V Turn signals and four ways work fine until headlights are turned on,or heater blower is turned on. At that point,they cease to flash,and both indicators are dimly lit. I assume it's a bad ground,but I've cleaned and tightened every one I could find,with no res...	View
	2001 Ford Mustang GT Bullitt 4.6L Brake pedal VIN: 1FAFP42XX1 Vehicle came in for annual state safety inspection and found front brakes locked up. Found calipers sticking. I sold calipers, hoses, pads and rotors. Vehicle had good brake pedal before repair. After repair and complete brake flush with brake bleeder ball, ca...	View
	2003 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU7EK43 Vehicle intermittently sets rich codes. The first time it happened vehicle seemed to be running slightly on the rich side (fuel trims around 7 to 10) Couldn't find any cause for this as maf was normal, fuel pressure was normal and couldn't find any other issue... Trouble codes: P0172 (Bank 1 rich), P0175 (Bank 2 rich)	View
	2006 Ford Escape XLT 3.0L Engine VIN: 1FMYU031X6 This is je'taun from sts car care. Vehicle came in a no start. Customer states he has been regularly driving vehicle and then, a no start condition. Got vehicle started but it ran horrible. Then a no spark condition. Fuel pressure is within specs. Checked timi...	View
	2007 Ford Explorer XLT 4.0L Mechanical VIN: 1FMEU63E77 I am trying to do a BG transmission fluid exchange on a this Explorer and I am not able to disconnect the transmission lines from the bottom of the radiator. This is the second Ford that I've run into that I couldn't service. I have 3 different disconnect tool...	View
	2000 Hyundai Sonata GLS 2.5L No Start, MIL Lamp on VIN: KMHWF35V5Y car was in a flood. crankshaft position sensor test results: 5 volts on pink wire, good ground on black wire, yellow wire square wave goes to 5 volts and only down to .2 volts -not all the way to 0. checked to see if sensor was seated all the way in and was, a... Trouble codes: P0335 (crankshaft position sensor)	View
	2005 Infiniti G35 3.5L electric VIN: JNKCV51EX5 Greetings all. I personally would like to thank you for all that take the time to read this message. I'm having a problem with a blown fuse for this 05 infinity G35 sedan. The vehicle does not have key less entry. It does come with a key. The fuse that keep o...	View
	1992 Jaguar Vanden Plas 4.0L No Start VIN: SAJKY1748N Hi guys could really use some help here. I have this 1992 Jag Vande Plas and it came in on the hook no start. Found good compression on #1 cylinder and low on others. Plugs were fuel soaked and dead battery. Added oil to bring up compression on all cylinders a...	View
	2001 Jeep Grand Cherokee Limited 4.7L Misfire 01 jeep grand cherokee 4.7 misfire cylinder 2 Trouble codes: P0302	View
	2005 Lincoln Navigator 5.4L Abs Tcs VIN: 5LMFU28505 Thanks ahead of time for any help I can get. We are trying to initialize the steering angle relearn for this 2005 Navigator after brake service. I have a MAXIDAS 708 which offers the procedure but isn't giving me the step prompts that I am expecting (lock to l...	View
	2000 Mazda Protege DX 1.6L Engine VIN: JM1BJ2221Y Vehicle came in running poorly, exhaust coming from intake manifold. Timing was off - intake camshaft was advanced, exhaust cam was retarded. Replaced timing belt, water pump, seals, etc. During reassembly, tech grounded out the alternator wire, and blew the ...	View
	2005 Mazda 3 S 2.3L blower motor VIN: JM1BK12395 If anyone has any information about testing and removal of the blower motor it would be greatly appreciated! Thank you in advance.	View
	1996 Mercedes-Benz S500 5.0L Surge VIN: WDBGA51E2T Once i tuned it up and replaced the fan clutch due to overheating issue, the vehicle surges at stops. Researched and found a tsb regarding this problem. Per tsb, replaced fuel pressure regulator. The vehicle doens't surge as much, but it still surges. Has no v...	View
	2001 Mercedes-Benz S600 5.8L ac not workn VIN: WDBNG78J41 installed ac compressor and ac control mod. in dash.now ac works for a short time,maybe 5mins.,then cuts off.cut ac off by control unit then it works for a short time.	View
	2003 Mercedes-Benz S430 4.3L Compressor VIN: WDBNG70J83 Mercedes tech please help! AC off button is inop, compressor will not engage. Self test on control head relays KLA A ERR 1257. I can not find code descriptions. Any info will be greatly appreciated!	View
	2001 Mercury Sable LS Premium 3.0L No Start VIN: 1MEFM55S71 Hello I have what I believe to be a doozie. I thank everyone in advance for any assistance. I have no codes in the computer. performed a full vehicle self check-still no codes. The vehicle came in with a no start..checked fuel pressure good 56psi. checked for ...	View
	2000 Nissan Sentra GXE 1.8L air output VIN: 3N1CB51DXY Hey Guys I have a 2000 nissan sentra that I recently replaced a evaporator on. I charged the system everything was fine checked the a/c and it was blowing nice and cold. Gave the car to a customer and she brought it back 30 minutes later saying its not blowing...	View
	2003 Saturn LW200 2.2L No Start VIN: 1G8JU84F23 I'm losing ign. volts from the pcm to the fuel pump relay. Replaced fuel pump about 4-months ago, because the customer stated that the engine would quit when it was low on fuel.Vehicle came back about 3-weeks ago for crank no-start. Test revealled no ignition ...	View
	2008 Toyota Tundra SR5 4.7L Poor Idle Quality, MIL Lamp on VIN: 5TBBT54128 Needs some advice on this one. Truck ran like low power and all the other lights come on- i understand the stability stuff comes on when an engine fault is present. What i need is a way to diagnose this- no help from the MODIS-no bi directional. What should i ... Trouble codes: P2440, C1201	View
	1996 Volkswagen Passat GLX 2.8L compressor wont shut off VIN: WVWEE83A7T Hey gents im stumped,this a/c compressor never cycles causing a freeze up the drain is clean,it has a new fan controler,new high/low switch square 4 wire connector(the one on the high line@ the firewall),new thermo switch third one in line@ with the brown squa...	View
	2009 Volkswagen Jetta TDI 2.0L MIL Lamp on, No power VIN: 3VWAL71KX9 Car was towed in. She said she lost power while driving and the check engine light came on. We found a service bulliten related to this code and symptom saying to check all turbo hoses for cracks etc. Also had us test the vacuum acuator for the turbo and it wo... Trouble codes: P00AF	View
	2004 Volvo S60 2.4 2.4L MIL Lamp on, Multiple VIN: YV1RS64A24 Good morning IATN members.Thanks in advance for the help.This Volvo is both a return car and a return post.Vehicle came in 3 weeks ago with no cluster operation.It would work upon start up and the cluster would shut down after 3 seconds.Only check engine light...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2000 BMW 540i 4.4L No Start VIN: WBADN634XY Thank you Robert and Mirek, you guys were right on. It is amazing that we are paying a small fortune to purchase and suscribe to BMW in order to have the latest software and BMW make you waist time doing over and over again a EWS/DME synch with ISTA/P and does...	3
	2002 Cadillac DeVille DHS 4.6L a/c VIN: 1GEEH90Y72 THANKS FOR ALL THE GREAT REPLIES TO MY PROBLEM. AFTER WE HAD REMOVED THE DASH WE COULD SEE THE BLEND DOOR ACUATORS WERE NOT MOVING ALL THE WAY. SO AFTER REPLACING THEM WHEN WE RECHARED THE SYSTEM I LOOKED MORE CLOSLEY AT THE PRESSURES AND FOUND IT NEEDED 3 LBS...	7
	2003 Cadillac CTS 3.2L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G6DM57N13 After replacing the throttle body a second time with no improvement i have come to the conclusion that what juan also had found that the problem is so intermittant that it has to be in the wiring harness Trouble codes: P0221, P0700, P2176, P2135, P0121.	3
	2003 Chevrolet Silverado 1500 4.8L Misfire VIN: 2GCEC19V63 Well I had not heard back from this customer,so I gave him a call.He said the truck has been excellent since he got it back.I guess the injector purge must have been the cure.Next time I get one like that I'm going to pull out the injectors and "visually" insp... Trouble codes: P0300.	30
	2003 Dodge Grand Caravan SE 3.3L No Start VIN: 2D4GP44R43 Thanks for all the replies! As several of you said, the injection harness was melted together! I could move that harness around and watch the voltage come and go on my sensor ground circuit... Trouble codes: P0123 (TPS volts high), P0118 (ECT vots high), P0108 (MAP volts high), P1598 (A/C pressure sensor volts high).	10
	1995 Ford F-350 XL 7.3L shifts in and out of VIN: 1FDKF37F5S after explaning to the people i sent the computer to the last one figure out i knew what i was talking about . pin 92 of pcm only has power when brakes applyed replaced pcm with a good one reman. pcm,s dont always work if you have a uncomman problem.	14
	2002 Ford Explorer XLT 4.6L MIL Lamp on, P0135, p0155 VIN: 1FMZU73W02 Well i got this one nailed down, i did try OE oxygen sensors with the old pcm and the first reman pcm and it was still giving the same codes. i double checked all the wiring for the o2 sensors 1 more time including a voltage drop test across each circuit and f... Trouble codes: P0135 (O2 sensor heater circuit fault bank 1 sensor 1), P0155 (O2 sensor heater circuit fault bank 2 sensor 2).	13
	2002 Ford F-250 Super Duty Lariat 7.3L no power VIN: 1FTNW20F42 Since we replaced the ebp sensor and tube there was a slight improvement in power since the backpressure valve is opening, but the truck is still underpowered. the customer however does not want to pay for any further diagnostic work so he is just going to ta...	11
	2002 Ford Escape XLT 3.0L abs VIN: 1FMYU04162 First off lesson 101 the customer is always right-we tend to think that they are a bunch of stupid wildebeest to prey on but lest we forget they know their car-after reconnecting everything back to pre-recall state light stayed out-went back to Ford and all...	12
	2002 Ford Explorer XLT 4.0L Pats VIN: 1FMZU63E92 Many thanks to Jody and Andrew for taking time to reply. The transceiver or antennae ring did indeed fix this vehicle. Gotta luv it when you get it right the first time with a little help from your iatn friends!	2
	2010 Ford F-250 Super Duty Lariat 5.4L Intake? VIN: 1FTSX2A59A It's always the simple stuff that throws me. Really dumb mistake and just couldn't figure out what I done wrong. I had switched the emissions line to the intake with the line on the air cleaner assy. No Wonder! I kept thinking what is missing to restrict the a...	7
	2001 Honda Civic EX 1.7L compresssor VIN: 1HGEM22931 Thanks for the replies fellas. As I suspected(90% SWAG) it turned out to be the Multi-Plex(BCM/Fusebox). Did not find a definitive way to test dataline to pcm though.	6
	2003 Honda Civic EX 1.7L A/c VIN: 1HGEM21963 Quick and simple repair... Here is what was written to me in the way of instructions needed to confirm the control head failure. Pull the HVAC control panel out from the dash. Leave the wiring connected. Backprobe-- apply ground to the BLUE wire at terminal A...	7
	2005 Hyundai Sonata GLS 2.7L fan/temp control & fan motor VIN: KMHWF35H85 Replaced terminal and soldered ends, still getting hot on high.. replaced motor and solved problem.. only 2 amps less on new motor draw. but same resistance when spun buy hand. who would of thunkift!! Thanks for all the help for those who answered.	5
	2001 Mercedes-Benz E320 3.2L Dlc VIN: WDBJF65J61 I am closing this "fixed" because I opened this as a communication problem. The customer has to decide if actual problem is worth the additional money to fix. I had go over connectors and fuses to establish communications. Finally a SDS showed the SRS...	7
	2004 Pontiac Grand Am SE1 3.4L Poor Idle Quality, Surge, Cuts out, Misfire VIN: 1G2NF52E14 Thanks for all your help guys Found lower intake gasket sucked in due to crack in the lower intake upon further inspection found crack in upper.Then for the rest of the stoy from the customer.He had had the intake gasket replaced 50,000 miles a go by another ...	17
	2006 Suzuki Grand Vitara Luxury 2.7L No Start, MIL Lamp on VIN: JS3TD944X6 Thanks for all Replies I check the camshaft to crankshaft correlation and it dose not match. So take out the timing cover to check the timing and the all timing mark on right place. So after that remove the transmission to check the flex plate and the flex pla... Trouble codes: P0341.	4
	1991 Volkswagen Jetta GL 1.6L No Start, Stall VIN: WVWRG21G7M My main concern for this vehicle was the no start which I believe on a diesel should be pretty easy to narrow down but the customer has not as yet returned for me to diagnose it. Thanks to the 2 respondents. Mike	2
	1993 Volkswagen EuroVan MV 2.5L Unknown VIN: WV2MC0706P Thanks for the reassurance. This was the first time I worked on a Eurovan. It is an R134A system. My two main concerns were high side pressure, or a condenser issue. Probably would have been a good idea to do the condenser with the job, but flushing and pressu...	5
	2001 Volkswagen Passat GLX 2.8L Antifreeze VIN: WVWRH63B41 REPLACED THE COOLANT TANK SOLVED THE PROBLEM,THANKS FOR EVERYONES HELP	9
	2006 Volvo S80 2.5T 2.5L Unknown VIN: YV1TS59266 Well after all the great tips on the compressor issues, that is what are going with. everything else checks out good and the vehicle doesnt seem to act up on cooler days so we are just waiting for the customer to drop the car back off for the repair. thanks ...	12

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