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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 20, 2013
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for All Makes and Models
Help Request Answers
2001 BMW 325i 2.5L Idle Air Valve VIN: WBAAN374X1
I received this 01 BMW 325i 2.5L after several shops have had it and just through parts at it to try and fix it. It has a new throttle body and idle control valve that others have put on it trying to no avail to repair it. The issue I have is when you are at c...
2005 BMW X3 2.5i 2.5L Cuts out, Misfire VIN: WBXPA73465
I have this vehicle that "feels" like it is misfiring under a load and only under a load at any speed. It will set zero codes. I just fixed a lean code on this car due to a faulty MAF. Performed a hard battery reset. Reset transmission adaptions. Ohm all fuel ...
2004 Buick LeSabre Limited 3.8L electric windows VIN: 1G4HR54K94
Car came in with the complaint of power windows inop and circuit breaker in fuse box under rear seat hot. As we tested this system, it began to work normally. When we first unplugged the breaker (30 amp)and plugged it back in, there was a noticable spark/draw....
2005 Cadillac SRX 3.6L front of engine VIN: 1GYEE63785
This SRX has been to everyone around here and now it's at my shop. Complaint is a VERY intermittent loud noise coming from the front of the motor, only almost immediately after cold start up and only lasts for 3 to 5 seconds. Not everyone has heard this but th...
2000 Chevrolet Blazer LS 4.3L Abs& Brakes Lamp On VIN: 1GNCT18W2Y
ABS and Brake lamp comes on while driving. when stop engine and restart, the lights on a few seconds and turn off , but later while driving ABS and Brake lamps comes back on. Could that be air trap in the system or dirt clog in the system. What is the remedy. ...
2003 Chevrolet Tahoe LT 5.3L Starting VIN: 1GNEK13ZX3
i have'nt had much time to look at this one yet so im hoping i can get some input before i start. this was towed in for no start, battery was dead so i charged it and it wouldnt crank. i tried locking and unlocking the doors with the remote after i tried start...
2003 Chevrolet Monte Carlo SS 3.8L Misfire, MIL Lamp on VIN: 2G1WX12K13
The vehicle came in the computer was scanned code P0300 was the only code in the computer. The customer mentioned that the vehicles check engine light will go on and off. The code before was always the P0300, the customer said that the vehicle has only run rou... Trouble codes: P0300 (Random Misfire)
2004 Chevrolet Silverado 2500 6.0L Misfire VIN: 1GCHK23U04
hello to everyone in IATN land. I have a p0300 that is a little odd. The only time I can get it to consistently misfire is free revving it between 2000 and 2500 rpm. Misfire is very consistent on cylinders 1 and 6. Cylinders 8 and 5 appear to be along for the ... Trouble codes: P0300
2008 Chevrolet Tahoe LTZ 5.3L rear wiper VIN: 1GNFC13028
cust only gave me ten minutes today will return next week. once every two week the 25 amp rear wiper fuse will blow. the wiper will park but won't operate again. just checking to see if anyone has seen this, it is very intermit. all i`ve seen so far is a blown...
2008 Chevrolet Suburban 1500 LTZ 5.3L MIL Lamp on VIN: 3GNFK163X8
Long term fuel trim bank 1 goes to -27 to -30 on a long decel at higher speeds 45+. Bank 2 is normal. As soon as you touch the gas pedel it switches cells and drops to near 0%. We have Swapped front and rear o2 sensors side to side. Amps ramped one injector on... Trouble codes: P0172 (rich bank 1)
2003 Dodge Caravan SE 2.4L Poor Idle Quality, Surge VIN: 1D4GP25B93
vehicle came into shop in need of timing belt with no running issues.timing belt was installed and immediately started to surge and got 2 codes -p0442,p0456. rechecked the timing and it seemed to be off one tooth .timing belt was redone and we are under the im...
2004 Dodge Durango Limited 5.7L Poor Idle Quality, Misfire VIN: 1D4HB58D94
This vehicle had rough running problem before we ever touched it, customer states the dealer told him that you can not run platinum plugs in this engine??? Has anyone ever heard of this and if so why? From what little I have checked so far cylinders 1,3,5,&7 a... Trouble codes: P0132 (voltage high on sensor 1 bank 1), P0300 (random misfire cyl 1 3 . 5 7)
1998 Ford Expedition Eddie Bauer 5.4L Poor Idle Quality VIN: 1FMRU17L1W
vehicle runs rough at idle only feels like vacuum leak cannot find any leak
1998 Ford Ranger XL 2.5L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1FTYR14C2W
I found denso plugs in this ford and could not verify their correct application through any of our local parts stores.Installed correct autolights and new cables on all 8 plgs.My need or question here is the functionality of this 4 cylinder ignition .8 plugs,2... Trouble codes: P0301, P0303
2000 Ford Expedition XLT 5.4L Surge, Cuts out, Stumble VIN: 1FMRU15L6Y
Hey gang. This is my wife's truck and it has developed a stumble or cuts out from a stop. It very random, it seems to mostly occur within the first 10mins of driving and also when fuel level is below 3/8 of a tank of fuel. Truck just cuts out during accelerati...
2003 Ford Excursion Limited 7.3L Batteries VIN: 1FMSU43F53
Good Morning, This Excursion has been here for about 6 weeks. The customer dropped it off before going on an extended vacation. It continues to drain the batteries. It originally came in for a low power and hard start (cranking a long time before starting)com...
2004 Ford Focus SE 2.0L ecm VIN: 1FAFP34364
This vehicle came in for service and customer wanted the service engine light addressed. Engine light and check gas cap light are on but vehicle runs fine. Hooked my scanner up and I can't get any communication with the ECM. I can communicate with GEM, ABS, Ai...
2006 Ford Taurus SE 3.0L tcc circuit VIN: 1FAFP53U76
This Taurus is throwing a tcc code p0743 and stalling and surging mildly in low gears. The resistance for the solenoid is in spec and passes the click test. Is there any background on this issue or should I try a solenoid replace first? I know there was a TSB ...
2009 Ford Fusion SEL 3.0L Pump VIN: 3FAHP081X9
Has anyone seen the power steering pressure switch leak or blow out? New concern or history with units?
2010 Ford E-450 Super Duty 6.8L MIL Lamp on VIN: 1FDFE4FS8A
Compression test good. Leak test for vacuum leaks. Tested & switched location of all coils, plugs & injectors. #1 & 7 Injectors click during misfire, spark stays constant. Checked wiring resistance from ecm to injectors & coils. Ran with alternator disconnecte... Trouble codes: P0301, P0307
2000 GMC Savana 1500 5.0L Starting VIN: 1GDFG15M5Y
hey gang I am drawing a blank on this one. It will crank just fine but will not start. Fuel pump is working and is giving 65 while it is running, after its pulse it drops to 55. This seems normal to me. Go to crank it and pump will not come back on pressure st...
1994 Infiniti Q45 A 4.5L 3-4 Shift VIN: JNKNG01DXR
2008 Mazda RX-8 Touring 1.3L No Start VIN: JM1FE17308
Hello guys and gal, i have had a 2008 mazda rx-8 towed in from the highway, where it had died and would not restart. cranking,the veh. has no compression, scanned pcm and have a p0503,code,intake ruuner control concern. problem is, i have alldata,which has lit... Trouble codes: P0503 (Intake runner concern)
2002 Nissan Xterra SE 3.3L Fuel level sensor VIN: 5N1MD28T02
PCM sets a P0462 code- voltage at signal wire for fuel level low or erratic, accompanied by a CEL. Issue is intermittent. We replaced the sending unit in the tank, code repeated 2 weeks later, cust went to the dealer, dealer replaced the sender, code repeated ...
2010 Nissan Murano LE 3.5L power steering VIN: JN8AZ1MW2A
Customer complaint is after driving over a two day period steering became tight, verified power steering fluid level and condition,flushed for maintenance, do not have equip to check pressure but have good return flow, on rack found nothing that seems to be bi...
2003 Pontiac Grand Am SE 3.4L shaking VIN: 1G2NF52E43
coustomer states the car intermitantly will violently go to shaking threw the steering collum at crusing speeds. the car may go for days with no problem. we repaired the wore out tie rods with an alignment. this car is very clean & well kept. I can not get the...
2006 Pontiac Torrent 3.4L starting, Inst. panel lights, Power windows VIN: 2CKDL63F06
Car towed in for no start after shut off and he could not get drivers power window up. Ck main fuses under hood, all good. I went right to ignition switch and their are two Red wires with white tracer D12, and C12 that should have power from 30 amp ignition fu...
2004 Saab 9-3 Arc 2.0L Engine VIN: YS3FD45Y04
Hello to all techs. Wondering if any techs out there have figured out a way to set TDC timing on these cars without the Kent Moore tool. This car is an ARC with a high pressure turbo so I would need the specs for the tool with last three numbers 079 gold blo...
2000 Saturn SL2 1.9L SIR, BCM module VIN: 1G8ZK5275Y
Called in to program new BCM on 2000 Saturn. Programming appeared to be successful, did relearn, car started, shifted out of gear, and drove. Windows, lights, ac, radio and ipc worked...except odometer reading was 0000000 and air bag light was on. Called AC De...
2001 Toyota Tundra SR5 4.7L wheel speed sensor VIN: 5TBRT34151
after replacing rear wheel bearings , seals and abs rings goes into false abs activation at low speeds when almost stopped. also no codes present when scanned w/genisis scanner.put into self test mode and sets code 73 for right rear wheel speed sensor output. ...
2004 Toyota Camry SE 3.3L Battery VIN: 4T1BF30K04
Customer complains that the battery goes dead after 2 days of sitting. I tested battery and charging system. Both are fully functional. Tested for parasitic drain and am showing a .30 amp draw on my meter at the 10 amp scale. If i unplug the voltage regulator ...
1970 Volkswagen Beetle 1.6L Charging
So I got this half finished kit car in for some carb work. It is a MG fiberglass body on a VW bug chassis. While I am working on it I notice that it isn't charging. Of course the wiring is a nightmare. Notice there is no key on power going to the volt regulato...
2005 Volkswagen Phaeton V8 4.2L Radio VIN: WVWAF03D05
Customers complaint is no radio. This is a 1st generation infotainment system. After replacing the dlc fuse I have code 01305 in both the CAN gateway and Instruments module. The amplifier (dsp) was found loose and laying on the starter battery. All radio funct...
2009 Volkswagen Tiguan SE 2.0L water pump housing VIN: WVGAV75N49
Thanks in advance. 2009 VW Tiguan 2.0t engine code CCTA. At the top of the water pump housing where there is a cut out for the seal it keeps cracking.This is not a timing belt driven water pump. I have seen another post for the same thing but there was no fix....
2004 Volvo S60 2.5T AWD 2.5L MIL Lamp on VIN: YV1RH59H34
Good morning Volvo techs everywhere.. I have here an 04 s60 awd with a variety of problems.Customers first complaint was that the cruise control does not work,then the transmission would downshift harsh and then no longer upshift.He turns off car and restarts ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1992 BMW 850i 5.0L No Start, Stall VIN: WBAEG2310N
Thank you guys. I really appreciate you taking the time to respond. One of the strangest cars I have ever worked on. Like some of you suggested we took two fuel pressure readings (one at each fuel filter) Found only about 15 psi. We thought there might be a le...
2006 BMW 325xi 3.0L Compressor VIN: WBAVD13526
1994 Chevrolet Camaro Z28 5.7L No Start, Stall, Intermittent VIN: 2G1FP22P6R
Hello all, and thank you for your time and efforts. It is repaired. While all good advice, it came down to several things. To recap and answer each post, here is the rundown: 1. We tested for shorting injectors, pass. Resistance all 11.8-11.9 upon retest. I... Trouble codes: 16 (OPTI-SPARK Ignition Timing System Low Resolution Pulse), 36 (OPTI-SPARK Ign. Timing System Faulty Hi Res. Pulse or Extra Low Res. Pulse detected).
2004 Chevrolet Silverado 3500 LS 6.6L Hesitation, MIL Lamp on, Low power VIN: 1GBJC34254
Thanks for the replies!! The replacement turbo was supplied with the incorrect gear inside. There was no ramp on the gear to push up un the position sensor. Replaced turbo again and truck runs great. Trouble codes: P0046 (Turbocharger boost control position performance).
2004 Chevrolet Silverado 1500 LS 5.3L steering system VIN: 2GCEK13T34
Thanks to all for your help, I think Steven is spot-on on the gear replacement. I have recommended that to the customer, he took the truck and is going to have me do that when he can schedule it in again.
2007 Chevrolet Trailblazer LT 4.2L timing chain VIN: 1GNDT13S57
Well first I would like to appologize for lack of info, Pulled head on 4.2l inline [...] 4wheel drive, the awsome special tool that holds tensioner in place came loose- thus tensioner all the way out, removing front cover is more than 4 bolts and a soda br...
2009 Chevrolet Aveo LT 1.6L compressor/expansion valve VIN: KL1TD56EX9
Sorry for the late post, it's been a crasy summer.I tried icing down and tapping on the expansion valve and nothing changed. In this situation, as far as I can tell, there is no other way to determine if its an expansion valve or a compressor other than replac...
2001 Chrysler PT Cruiser 2.4L limp mode VIN: 3C8FY4BB01
I'm going to go ahead and close this out. We installed a known good tcm into this vehicle and still had the same problem. I think we can say with certainty that there are some wires crossed up where they spliced the harness on the drivers front of the vehicle...
2008 Chrysler 300 Touring 3.5L No Start VIN: 2C3KA53G18
I would like to thank everyone that responded. as stated before when the no bus message would appear and had no communication with any modules. the fix on this vehicle was the power distribution module. after replacing vehicle would restart every time Trouble codes: U0141 (lost communication with FCM), U0121 (lost com with anti lock brake module), U0100 (lost com with ECM), U1197 (security seed response not reveived from pcm).
2000 Dodge Ram 1500 ST 5.9L Stall, MIL Lamp on VIN: 3B7HC13ZXY
We are having issues with re-manufactured computers. Seems like you have to get 2 or 3 to get one that works properly - especially dodge pickups. The last one i put in runs the engine fine. So i guess it is just the nature of the beast.
2008 Dodge Ram 5500 SLT 6.7L MIL Lamp on, U140d VIN: 3D6WC78A78
This vehicle still has the fault but its an over the road truck and intermittent on trips. We cannot duplicate!! Since this post it stopped at two other dealers and they said it was the pedal position sensor at one and a TPS at the other. They did not want to ... Trouble codes: U140D.
2006 Ford Taurus SE 3.0L No Start
want to thank all that replied & offered their help. most of all replies gave me great insight on what I needed to check. most said to check battery & ground connections & I did. found the voltage drop at battery connections wasn't where it needed to be.althou...
2010 Ford F-150 FX4 5.4L Steering VIN: 1FTFW1EV8A
Tried tightening the steering wheel nut-didn't help-problem is most likely the intermediate shaft between the column and gear-noise is not bad enough to warrant a 300 shaft at this time-thanks to everyone who replied-Deke
2001 GMC Sonoma SL 4.3L 3 monitors wont run VIN: 1GTCS19W21
well, after putting a dealer plate on this truck and telling the customer to drive it for the week-end, {480 km later} we got a ready on the cat monitor, EVAP still did'nt run but I could get an E-test pass with one monitor not ready here, I believe it just ne...
2000 Honda CR-V LX 2.0L MIL Lamp on VIN: JHLRD1747Y
OK think this one is fixed. Got good CKF wave form on lab scope. After repairing wiring. Did Cranking amperage wave form too just to make sure we did not have a problem there. Fix does confuse me a little. It was a broken wire in the engine compartment wiring ... Trouble codes: P1337 (Ckf sensor circuit no signal).
2003 Honda Civic EX 1.7L variable valve timing VIN: 1HGES26723
Thanks to all who replied. The sealing bolt for the VTEC in the #5 camshaft bearing cap backed off and fell out. My assumption is that between the machine shop and the shop who installed the head someone loosened or removed the bolt and never tightened it up. ...
2000 Land Rover Discovery Series II 4.0L engine VIN: SALTY1246Y
Well, the boss man called the customer and explained (again, and in harsh terms) how the block can be faulty, then went on to point out how this was not a good fiscal decision, exceeding car value. Customer decided not to repair further. Sometimes, you can f...
2003 Mercury Marauder 4.6L No Start, Hesitation, Cuts out, Misfire VIN: 2MEHM75V33
customer came and got the car. he did not have the funds to fix this one. we recommended the cats to be replaced. we did fix some issues like the smoke from the tail pipe ( leaking #6 injector) and the new maf fixed the readings and you could drive it after th...
1999 Porsche Boxster 2.5L Top VIN: WP0CA2981X
Thanks, most of you were 100% correct. The micro switch by top lock was defective, it actually had loose terminal where switch gets plugged in, so when the top stopped working, by pushing on the switch plastic made it operational. I replaced the switch and ...
2000 Subaru Legacy L 2.5L No Start VIN: 4S3BE6358Y
thanks guys canister full of fuel replaced it and vent valve retest starts and runs good vent had some dust and dirt in it acar lives on dirt road
2002 Toyota Avalon XL 3.0L Poor Idle Quality, Hesitation, Misfire VIN: 4T1BF28B22
Thanks for all of the feedback everyone. After lots of back and forth, the customer shared with us that this problem has been an issue with the vehicle since before we did the engine work. When she learned that further diagnoses would not be covered under war...
1977 Volkswagen Transporter Campmobile 2.0L Coil VIN: 2372118024
kudos to George, your description of the wire routing was spot on! from the blower relay to the coil i found the wire rubbed through. Did not blow the fuse though, funnier things have happened! repaired the wire and all is well! Thanks Perri! you were right al...
2000 Volkswagen Beetle GLS 2.0L fuel filler VIN: 3VWCC21C5Y
I had aleady tried vent hose/valve and charcoal canister. I fugured it out though. someone put a bunch of sugar down the fill hole and it built up at the rollover check valve at the base of the filler neck. I pushed the valve open and the tank fills now. cu...
2001 Volkswagen Passat GLS 1.8L Mechanical VIN: WVWPD63B91
this passat had some engine internal issues on top of a bad a.b.s. module so the customer elected not to fix it and trade it in thanks for the help iatn is a great tool
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