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Prev Professional Automotive Repair Technical Discussions for October 16, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
1995 BMW 325i 2.5L starter not working VIN: WBABJ6325S
Not getting power to terminal 50 at starter.Car does not have chip in key its a late 1994 model. Checked stater imobiliztion relay, i can ground black and green wire( terminal 9) to relay and it works fine but i do not have a wiring diagram that shows me where...
2006 BMW 750Li 4.8L smokes VIN: WBAHN83526
Hi! I may have started a problem. This car displayed excessive smoke at idle or under hard acceleration. Please advise me with any knowledge or info. that may be helpful. This engine is a N62TU. I am told the N62TU is different than the N62. I have researched...
2007 BMW X5 3.0si 3.0L Battery dying VIN: 5UXFE43527
New Customer recommended by another customer. Have a low mileage BMW X5 that has had 3 batteries replaced in last 9 months. I checked the battery and it is bad,no suprise there. but what is causing this. Hanging out in the shop last night doing some paperwork,...
2006 Buick Rendezvous CXL 3.5L Stall, No Crank VIN: 3G5DA03L56
I have this Buick that stalls intermittently, like turning the key off. Can happen at speed, coming to a stop or just idling in Park. Happens 1-4 times on a 15 minute trip or sometimes not at all. What makes it unusual is that the vehicle will not crank for an...
1999 Chevrolet K3500 7.4L No Start VIN: 1GBJK34J7X
Thanks in advance for any help. Truck was towed in(from another shop) for a no start condition after a back fire. No codes, found I had no fire at plugs and replaced cap and rotor. Now I have fire but still no start. Checked fuel pressure and it was low (40psi...
2003 Chevrolet Trailblazer EXT North Face 5.3L Lbeam headlamps VIN: 1GNET16P63
From the archives everyone is mentioning the headlamp control module; however, I can't find this module. Alldata and Mitchell both say it is located on or around the left side rear PDC, but there are no modules there. It lists three different relays attached t...
2004 Chevrolet Silverado 2500 HD LT 6.6L Excessive Emissions, Misfire
Hi. This duramax had a tuner (bullydog) and is overfueling off idle, knocking at idle sometimes and misses on number 7 at idle.. I recently repaired two injector connectors that were a little burnt on cyl 2 and 6. now it runs better at idle. Cylinder #1 has a ...
2004 Chevrolet Express 3500 6.0L not tps signal VIN: 1GCHG39U74
I have a 2004 chevy express g3500 with a 6.0l. W/O says transs slips and customer barely made it to shop. No codes. I went this morning to check out van. Check trans fluid level good, it has a burn smell normal wear. Test drove van it drove fine no slips. Know...
2006 Chevrolet Impala LT 3.5L Hesitation VIN: 2G1WT58K26
thanks in advance.. this car came in with complaint for shift probleme. after driving noticed lack of power at around 1500 to 2000 rpm. once you get passed that its much better, almost seems no response at throtle,i jumped on checking exhaust restricted but ga...
2005 Chrysler 300 Limited 3.5L RKE key and fob VIN: 2C3JA53G35
Hello everyone! As is the norm, the worst problems of the work week come early on a Monday morning and leave you guessing the rest of the week. This one in particular the dealer doesn't even have any insight on so any and all help and suggestions from all thos...
2002 Dodge Grand Caravan Sport 3.3L engine VIN: 1B4GP44312
Hello there I have this van here that won't start. I have replaced the whole engine harness due to injector harness melting from getting hot from the exhaust. The van died and won't restart after wires touching. I have 3 codes in computer one is throttle posit...
2005 Dodge Grand Caravan SXT 3.8L Blower VIN: 2D4GP44L55
I've inherited this problem child. The blower runs on high with the key on, HVAC system off. Also, no sound from any speakers, but stereo appears to be functioning. Disconnecting the PWM signal from the HVAC control module has no effect; blower still runs on ...
2009 Dodge Sprinter 2500 3.0L MIL Lamp on VIN: WDWBE8ACX9
Hi folks. This van in the past intermittantly set code 2951 (EGR cooler implausible value). Now it regularly sets codes 2355 (EGR control air mass too large),and 2011 (MAF deviation too high). I am leaning toward a mass air flow sensor, however,two strikes aga... Trouble codes: 2355 (EGR control air mass too large), 2011 (MAF deviation too high)
2009 Dodge Journey R/T 3.5L dual zone VIN: 3D4GG67V19
Checked for codes none set. Temp blend doors move. Thought had to be temp. Blend door not moving passenger side. Removed dash and replaced housing assembly with new doors and acturators. Only serviced as an assembly. Did not find any broken doors upon inspecti...
1996 Ford F-250 XL 7.3L Battery VIN: 1FTHX26F2T
I am performing a parasitic drain test on this truck. Customer states that the battery will die after sitting for a couple of hours (over-night). Found the amperage draw to be 386mA with all accessories off, doors closed and lights off. All fuses/relays have b...
2000 Ford Explorer XLT 5.0L MIL Lamp on VIN: 1FMZU83PXY
This Ford have intermittent CAM code (P0340). I got signal at the PCM. I already replace the CAN senor and Alternator (FORD Re-manufacture). Check the synchronizer. This code will come back intermittently. Anyone see anything like this out there? Thank for tak... Trouble codes: P0340 (Camshaft Position Sensor A Circuit Malfunction)
2004 Ford Ranger Edge 3.0L No Start VIN: 1FTYR14U94
Hello and Thanks in Advance for looking at the help request!! This vehicle is a no start. Customer said he drove the truck into his driveway and it died like he had cut the key off. It has not started up since. First things, put battery charger on and hooked...
2006 Ford F-150 XLT 5.4L Misfire, MIL Lamp on VIN: 1FTPW14546
This vehicle will set # 5 missfire code consistantly, but only after engine is accelerated full throttle to 4500 rpm. There is a noticable lack of power at high rpm, engine struggles to accelerate once it hits about 4500 rpm.then check engine light flashes, th... Trouble codes: P0305
2008 Ford F-350 Super Duty XL 6.4L egr coolers VIN: 1FTWW31R38
this beauty is on the third engine, owner got tired of the engine replacing intervals so he deleted the exhaust filter and got a programmer. the problem was that the truck would loose coolant preformed the combustion gas test no change in color. pulled the tem...
2001 GMC Savana 2500 5.0L Daytime running lights VIN: 1GTFG25M31
As usual, another headache here that needs lots of asprin. The van came in for inspection an emissions. Emissions came up "not ready". After talking to customer they mentioned some jump starting going on the past while because the daytime running lights stayin...
2008 GMC W3500 Forward W3S042 6.0L MIL Lamp on
Hello all and thank you in advance for any help. This truck has been in for these same problems once before. The customer had it at a dealer in Joliet and they declined replacement of the MAF sensor. I have checked Cat. back pressure and it was less than 2 psi... Trouble codes: P0172 (Fuel Trim System Rich Bank 1), P0430 (Catalyst System Low Efficiency Bank 2)
1994 Honda Accord DX 2.2L No Start VIN: 1HGCD5622R
I have this Honda Accord that's driving me nuts. put a rebuilt engine on it 6 months ago. car sat for couple months, costumer picketed up car, a month later car came back on tow and...no spark no fuel pressure. sent the ecm to check if any wrong with it, no pr...
2001 Honda Accord EX 3.0L speed sensor VIN: 1HGCG22591
Good morning Honda guys, need your help.I have an accord without the speedometer working.customer took car to get trans. rebuilt, got it back and trans. not shifting correctly, was told by trans shop that the speedometer not working was the cause of the incorr...
2005 Hyundai Santa Fe GLS 2.7L No Start, MIL Lamp on VIN: KM8SC73D85
vehicle was towed in from the inter state, customer state that vehicle lost power and stalled. scan for codes found po300 through po306 and also po335 & po340, check vehicle had original plugs & wires which we have replaced, we aslo relpace the crankshaft posi... Trouble codes: P0335 (ckp sensor), P0340 (cmp sensor)
2000 Infiniti I30 T 3.0L Cuts out
Vehicle stalls when you first start it up in the morning and put it in drive. It only does this in cold weather, approximately below 50 degrees. Customer has to warm up vehicle for a few minutes before driving. Idle air control valve was replaced at customer r...
2004 Jaguar XJR 4.2L Insturment Config VIN: SAJKA73R74
Full Vin number is [...] I'm tring to congigure this car. But it only makes the problems worse. I have an IDS, but I have never tried to program/configure any modules before now. Now I'm in a pickle. I found Code B2139 Data mismatch from Insturmen...
1990 Jeep Wrangler Islander 4.2L Poor Idle Quality, Poor Fuel Economy VIN: 2J4FY39T8L
This jeep is being used as a snowplow on a farm so I hope you can forgive the ignoring of the emissions, not that we have testing in Alberta anyway. the vacuum system is a mess, ends open hoses swollen, vac leaks, causing poor idle bad ignition timing low powe...
2003 Jeep Liberty Sport 3.7L MIL Lamp on, indicated misfire VIN: 1J4GL48K73
Hi guys, I have an difficult one that I may not be approaching in the right way. This Jeep setup has had many problems with misfires due to valvetrain problem. But that being said, the vehicle/engine I am working on seems to runs OK but shows misfires on the m... Trouble codes: P0300 (Engine misfire detected), P0301 (Cyl. 1 misfire detected), P0302 (Cyl. 2 misfire detected), P0303 (Cyl. 3 misfire detected), P0304 (Cyl. 4 misfire detected), P0305 (Cyl. 5 misfire detected)
2008 Jeep Liberty Sport 3.7L No Start VIN: 1J8GP28K68
vehicle will intermittently not start. it always cranks strong. fuel pressure in specs but on the low side. also the system bleeds down to less than 10 psi in under a minute at times. (spec calls for that to take more that 10 min). i told the customer that the...
2005 Kia Sorento EX 3.5L Power Steering Fluid VIN: KNDJD73365
This vehicle came in with a leaking steering gear. we replaced it with aftermarket gear, bled and test drove, with no problems found. A few days later, it comes back with customer complaining of steering noise and fluid leak, and we found aerated fluid with a ...
2002 Land Rover Discovery Series II SD 4.0L No Start VIN: SALTL15482
Hello Rover Tech's, This car has had a used engine replaced and ran for about a week. Now we have no spark. Went to check crank sensor and nothing, we are checking it at the ECU, we tried another one but still no go. We did check for power and grounds at conne...
2004 Mazda 6 i 2.3L Hesitation, Surge, MIL Lamp on VIN: 1YVFP80C94
Have this Mazda here keeps throwing a p0340, it has been at another shop that installed a new cmp but still not good. Car will start and idle but doesn't like to accelerate, when you step on the gas it will surge and stumble, sometimes will stall. If you hold ... Trouble codes: P0340
1979 Mercedes-Benz 280CE 2.8L No Start VIN: 1070421200
Thank you in advance for your help. Car wouldn't start, no spark. Found an open coil resistor and bad module. Replaced those, car ran great for an hour. Then it acted like a plugged fuel filter and died. No start. Still have spark. Suspect fuel distributor, bu...
1981 Mercedes-Benz 380SL 3.8L turn signals VIN: WDBBA45A4B
Hi Guys, I have a Mercedes 380SL in for a no turn signal problem. If you position the lever to make a left or right turn both the front and rear signal lights come on nice and bright but do not flash. It produces a loud buzzing noise from the Hazard Switch whi...
1999 Mercedes-Benz ML320 3.2L Brake Booster VIN: 4JGAB54E6X
Hello fellow techs, having a problem after replacing the brake booster on this Mercedes. It has the electronic Brake Assist System and Electronic Stability Program. The initial problem was a hissing sound from under the dash and a hard pedal. Found the booster...
2000 Mercedes-Benz S500 Guard 5.0L starter VIN: WDBNG75J0Y
hello group, i have this mercedes here that wont crank for an extended time, and while it wont crank, the scanner has no communication with any controller on the vehical, and the cooling fans running on high, then after cycling the key several times, fan stops...
2004 Mercury Monterey 4.2L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire VIN: 2MRDA202X4
This Mercury/ Ford is driving me crazy. The Ford IDS computer system shows intermittent power drop out in the power balance test and Mode 6 data showing misfires 3.25% which is why we arrive at problem on #6 cylinder. When fuel injector is disconnected & engin...
2000 Nissan Pathfinder LE 3.3L Cuts out VIN: JN8AR07Y0Y
car was towed in no start diagnose no fuel check fuel pump not working remove fuel pump bench test no good replace fuel pump engine start no problim road test ok 2 weeks later no start towed in got in car started right up replaced fuel pump rlay runs good drov...
2002 Nissan Maxima SE 3.5L Misfire, MIL Lamp on VIN: JN1DA31A02
Hi all, This is a vehicle that I have diagnosed and repaired a couple months ago and has now returned after a visit to the Nissan dealer. A few months ago the dealer performed a tune-up and recommended a MAF sensor due to the active P0300 code. I installed the... Trouble codes: P0300 (Random misfire)
2008 Nissan Altima S 2.5L MIL Lamp on VIN: 1N4AL24E78
This vehicle came from the dealer with no throttle response. vehicle starts and idles fine. Dealer told customer the vehicle needed a new main wire harness and engine ECM ($5000+). I checked the 6 wires that go from pedal sensor to ecm and all are fine. I have... Trouble codes: P2122 (APP sensor 1 signal circuit low voltage), P2127 (APP sensor 2 signal circuit low voltage), P2138 (Wrong APP sensor rationality signal)
1989 Toyota Camry LE 2.5L HVAC blower motor VIN: JT2VV22E8K
All I need is a wiring diagram for this car for the HVAC
2002 Toyota Prius 1.5L inverter VIN: JT2BK18UX2
Just received this car from a trans shop that just installed a transmission. They said they had to remove the Inverter assembly to access some of the bolts and upon re installation and test drive this fault code P3125-264 has been set and is current. I have pe...
2003 Toyota Prius 1.5L Leaking fluid into the invertor cooling system. VIN: JT2BK18U13
The invertor coolant resevoir is full of pink milkshake looking fluid. Looks as though transmission fluid is leaking into the cooling system. From what I can tell the cooler for the invertor and transmission are the same. Is there a common failure in the trans...
2011 Toyota Corolla S 1.8L phone pairing VIN: 2T1BU4EE4B
When I bought this car new in July 2011, the salesman could not get my iphone 3gs to pair with the Corolla’s Bluetooth. After about 45 minutes of attempting to do so, I told him not to worry about it and that I would figure it out myself. It took me many attem...
2003 Volkswagen Jetta GLS 1.8L MIL Lamp on VIN: WVWSE61J13
This thing is throwing this code, checked g79 and g185 on vagcom and zone 3 will go from 14% to 87% and zone 4 is 14% to 39%, unplugged the pedal assy and pin1 to groung is 5 volts, pin 1 to 5, 5 volts, pin 2 to ground 5 volts, pin 2 to 3 5 volts, in the proce... Trouble codes: P1639
1997 Volvo 960 2.9L heating VIN: YV1KW9609V
Customer states this problem has existed for some time.AC functions fine but only ambient temp at vents in full heat mode.I do not believe there is any air in system and the heater core does not appear at all restricted.The mechanical heater valve fully opens ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1998 Acura TL 3.2L PGM FI Relay VIN: JH4UA3647W
It was indeed behind the left kick panel where it should be for a 3.2! Up above the fuse box, middle of the door post. Thank you for the helpful suggestion. I did get to see what it looked like, since I had pulled up a picture of it off a parts website. I knew...
1999 Audi A8 Quattro 4.2L Surge, Cuts out, MIL Lamp on VIN: WAUBG34D3X
Thanks for the help, we found that it is the engine ECU. We have one on order. Thanks to all for your help george
2006 BMW 750i 4.8L Dynamic Drive VIN: WBAHL83516
UPDATE: After speaking with Autologic tech and following BMW diagnostic plans it was determined the new unit was faulty so we sent it to BMW for warranty of module. They performed their diagnostics and called to confirm Unit was faulty. They replaced it under ...
2008 BMW X5 4.8i 4.8L I/P-Cluster and AWD & DCS VIN: 5UXFE83518
Thank You all for your help! I really appriciate all comments with this issue. Through trial in error, The AWD & DCS light went off after driving the vehicle (I was not having any drivetrain issuses that I could feel or tell, but driving it turned the light of...
1991 Chevrolet Corvette 5.7L Poor Idle Quality VIN: 1G1YY338XM
Hi all sorry to report that the customer is MIA at the moment and has not been back yet. So I am closing this fix and hoping that if he does come back I will post the final repairs. Thank you so much for all your input. Keep fixin'
1999 Chevrolet Express 3500 6.5L Instrument cluster VIN: 1GCHG35F9X
Ok, first off sorry for the late closing on this vehicle help request post. I have been working on this for weeks now and have spent over 50 hours of total time. I had checked wiring, removed and replaced, pcm, buffer module, cluster, and ran new wiring betwee...
2008 Chevrolet Silverado 1500 LT 5.3L Ebcm VIN: 2GCEK13318
This vehicle may be fixed. I performed a reprogram on the EBCM to see if the problem goes away. SAS gives good counts, no accidents on this vehicle and alignment is good. Lots of advice said to reprogram before replacing a module so that's where I'm at. I say ...
2001 Chrysler Sebring LX 2.7L MIL Lamp on VIN: 1C3EL45U01
I appreciate all of the thoughtful replies I received. I know I didn't mention it, but fuel pressure was one of the first things I checked. It was within specs at 60 psi. Apparently it all boils down to a mechanical problem causing vacuum and the MAP sensor ... Trouble codes: P0175 (Bank 1 system rich), P0172 (Bank 2 system rich).
2006 Chrysler 300 C 5.7L Misfire VIN: 2C3LA63H26
Thanks for the input guys. The fix turned out to be to decarbon the engine. We used BG let it flood the engine and soak for a few hours. It has been gone for a few days now and I spoke with the customer today. No check engine light smooth idle and great thrott... Trouble codes: P0306.
2008 Chrysler Sebring Touring 2.7L Power seat VIN: 1C3LC55R68
Thanks for the input. This was a bit frustrating because it would only blow the fuse every couple days. So I started by unplugging the drivers seat and giving it back to the customer. A couple days later she was back and fuse was blown. I had asked her to chec...
2002 Dodge Ram 1500 SLT 4.7L Guages, VIN: 1D7HU18N32
It seems the other shop had the key on when they removed the interlock device and caused the BCM to but-lock. Leaving the battery unhooked over night cleared the problem and all is well now. I guess it's easy to overlook the easy stuff. Thanks for all the help...
1994 Ford Mustang GT 5.0L Srs VIN: 1FALP45T2R
OK first thanks to all that replied. We checked clockspring ohm's and I just wasn't buying this was my issue so I double checked my diagnostic moduel and that was it. I found a guy in my area that had one only 50 bucks and light is off. What a nightmare. I do ...
2001 Ford F-150 Lariat 4.6L speedo VIN: 1FTRX18W81
After going through this system many times and contacting Identifix hotline we still did not have speedometer operation.We determined with the help of Mike Demers of Napa Flash that the PCM that cust had installed and flash at local Ford Dealer prior to bringi...
2008 Ford Crown Victoria Police Interceptor 4.6L trans range fuse VIN: 2FAHP71V28
After replacing OD switch, we still had an intermittent problem. I ended up installing a circuit breaker in the fuse position and told the officer to try to create some kind of pattern when blowing fuse. Hopefully he will let us know. Thanks for the replies...
2010 Ford Escape XLS 2.5L gross leak VIN: 1FMCU0C79A
thanks for all the help after retesting still i had found no leaks and the only thing that i was cutting out of the system was the purge solenoid because i had to hook the machine to the hose running to the back i then changed the purge solenoid and it fixed t...
1998 Honda Accord EX 3.0L srs lamp VIN: 1HGCG1654W
Thanks for all the help, as always the info. directed me to a fix. The lead that was correct refered me to the alt voltage. To prove this defect I hooked a scanner with voltage reading capabilities, although I was not able to read the voltage at the same time...
2003 Honda Civic EX 1.7L Misfire
Got this Civic fixed. Thanks to everyone who took the time to reply. When I ohmd the injector it was very low so I changed that, but I still had no negative pulse coming just the constant 12v in the yellow/black. Changed the computer for a used one which I had... Trouble codes: P0303 (Misfire cyl 3).
2007 Honda Fit Sport 1.5L No Start VIN: JHMGD386X7
I waited as long as I could to post fix. Since it was intermittent I wanted to make sure it is fixed, and apparently it is! Yay! Idle vac was 18", OK. Comp test was 202, 205, 185, 192, OK. Plugs were dry, so don't think it was washed down with fuel. I replaced...
2004 Infiniti G35 3.5L No Start VIN: JNKCV51E34
Hi Guys, Thanks for all the replies. as 4 of you said We Had a Bad ECM looks like cyl #1 coil shorted and melted at one section of the coil near conector. replaced coil but no cigar... later replaced ECM And now All is well Thanks again for taking the time to... Trouble codes: P0301 (Cyl 1 missfire).
2007 Lexus LS460 L 4.6L No Start, VIN: JTHGL46F47
Want to thank everyone for the help and advice given. We advised the vehicle owner of the TSB mentioned on the Push to Start button. He has chosen to take it back to the Lexus dealer and see if they will replace it under a goodwill warranty as he has had the p...
2002 Lincoln LS 3.0L Cat monitor VIN: 1LNHM86S62
1997 Mercedes-Benz E420 4.2L backup (reverse) lights VIN: WDBJF72F9V
everybody hit it on the head, the switch in the shifter was the problem, not sending voltage back to the illumination control module. thanks to all for the input, great info from great techs.
2003 Mercedes-Benz C240 4Matic 2.6L cooling fan VIN: WDBRH81J83
yes it was the ecm , had it repaired and not replaced, so we did'nt have to deal with programming. the harness did'nt apply to this vehicle and after replacing the ecm the fan worked properly. thanks to all involved, barry
1998 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA21D2W
Thanks for you responses. I decided to put upstream o2's from Nissan in this vehicle. Time will tell if it recodes. Thus far it has been driven approx. 200 miles without any failures. Joe Trouble codes: P0133 (B1s1 02 slow), P0153 (B2s1 o2 slow).
2006 Peugeot 206 CC 1.6L Cuts out, Misfire, MIL Lamp on
Thanks every one who helped out on this troubled vehicle :) So far we have fitted another Gen Coil Pack cleaned up all earths between Engine, battery etc. Have removed main terminal conection between ECU and cleaned all silicon out and cleaned terminals. Ch... Trouble codes: P0550, P1336, P1337, P1338, P1339, P1340.
1997 Pontiac Firebird 3.8L fuel level / gauge VIN: 2G2FS22K3V
Hopefully this will help someone in the future. We knew we did something wrong and it was obvious once we removed the fuel pump assembly what we had done. We routed one of the hoses [the one with the corrugated cover] incorrectly and it contacted the float arm...
2007 Pontiac G5 GT 2.4L Unknown VIN: 1G2AN18B57
Thanks for the help guys. I propaned the intake with no results. I tried to duplicate on lift but traction control takes over. found a small hole in the flex pipe of the converter where it meets manifold. when engine is loaded while getting on the gas the engi...
2006 Subaru Legacy 2.5i 2.5L Stereo VIN: 4S3BL62636
Thanks for all the replies! We are going to go the aftermarket route. I Dont know how I missed the fit kit for this vehicle when I first looked.
2008 Suzuki Forenza 2.0L air bag system VIN: KL5JD56Z88
thanks for all the help unanimous responce was thw harness under the seat. cleaned and tightened connection and all is well. thanks again
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