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Prev Professional Automotive Repair Technical Discussions for July 1, 2014
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Open Help Requests for All Makes and Models
Help Request Answers
2003 Audi A6 Quattro 3.0L Poor Idle Quality VIN: WAULT64B03
This 2003 A6 came in with a bad exhaust cam. I replaced the cams and all related seals/gaskets in the entire cylinder head, have no oil leaks and p0015 keeps popping up. The car idles perfectly until the fault code appears, but then either idles real low, arou... Trouble codes: P0015
2006 BMW 750Li 4.8L Engine VIN: WBAHN83536
Hello everyone this bimmer has a under heavy load misfire on all cylinders on 1 bank only p0300,p0305 p0306 ,p0307,p0308 it idles exelent ,only misfire under heavy load over 3k rpm when it starts misfiring it get so severe that i have to turn engine off then r...
1994 Cadillac Eldorado Touring 4.6L blower motor VIN: 1G6ET129XR
I'm helping a friend at his shop. I'm an ex. GM guy with some Cadillac experience. Blower inop, Followed blower inop chart and went thought the on board diagnostic system. All on board seems normal with no ACP codes, hvac data looked normal and I did the overr...
2005 Cadillac CTS 3.6L radio,lights VIN: 1G6DP56755
when key is turn off radio stays on head lights and dash lights stay on. rap relay is not in right rear fuse block no wires. with tech 2 it shows relay on all the time. disconected battery and solves problem temporary. no codes. doors show open and closed with...
1994 Chevrolet C1500 Cheyenne 4.3L ignition VIN: 2GCEC19ZXR
So this old shop truck shutting down voltage to fuel pump no spark first I look in to neutral safety switch.I wig all the wire under steering shaft truck starts.up fine this morning iwigle the wire no start now I remember on this old truck they would fry the w...
2001 Chevrolet Venture LS 3.4L MIL Lamp on VIN: 1GNDX13EX1
Vehicke came in with trouble code p0327. Knock sensor replaced at anotjer shop. removed sensor looked damaged durring install replaced eith napa sensor no change. Tested wire from knock sensor to computer no opens short to ground or pwr. found wiring to 24 x c... Trouble codes: P0327
2002 Chevrolet Express 2500 5.7L smog monitors VIN: 1GCGG29R92
hello we have this van customers states he needs van to run monitors to get ready for smog he stated he drove it 4 hrs and no more of them have ran this a half cng van and half gas I clear all monitors and tried again I get the same ones to run again and then ...
2003 Chevrolet Silverado 1500 4.3L Unknown VIN: 1GCEK14XX3
hello i can't tell you what is wrong becouse i don't know.i have been working on this 03 silverado 4x4 for 2 weeks & can't figger out the problem is. When you stop the truck trimbles all over like you are driving on a wash board.The front hub assy are new, fro...
2005 Chevrolet Silverado 2500 HD 6.6L steering pump VIN: 1GCHK23275
Hey out there,short week! I've got this duramax 4x4 and customer complained about noisy steering when turning lock to lock but it stopped doing it when it got here. There is a barely audible whine I just heard today but not sure if this would justify replacing...
2006 Chevrolet Silverado 2500 HD LT 6.6L Cooling Systems VIN: 1GCHK23D26
Hoping some diesel tech can help point me in the right direction here??? Ten minutes before quite time this truck comes in dumping coolant out as fast as you can put it in,as far as I can see its in the rear of engine,if you look in its above the oil filter an...
2009 Chevrolet Suburban 1500 LT 5.3L Stall VIN: 1GNFK26389
I have a Suburban with 5.3l that came in on the tow truck died out in the evening before when we had 90 degree weather. The next morning would not restart. I scanned the engine 1st got the codes pulled, reset codes and the car started. I next ran the fuel pres... Trouble codes: P0171, P0174, P0300, P069E
2010 Chevrolet Tahoe LS 5.3L Unknown VIN: 1GNUCAE03A
This is a repeat customer of mine. Story goes, they had aftermarket fog lights installed and customer claims that ever since then, the vehicle has been acting up. Symptoms are like it loses they data bus somewhere. Guages start flickering and going crazy, all ...
2004 Dodge Ram 1500 ST 5.7L Stall VIN: 1D7HU16D94
ran perfect before old fuel put in it.customer put bad fuel in it 2-3 gallons on a very low tank below 1/4.runs terrible stalls.fuel pressure good at 60.fuel sample smells bad,drain all fuel with relay jumped.add 10 gallons good codes,clean throttle bod...
2008 Dodge Nitro SXT 3.7L Wipers VIN: 1D8GU28K88
The complaint on the vehicle is "wipers come on when turn signals are used". Sometimes that's true, the other symptoms are many. The wipers seem to have a mind of thier own. At times they may follow the command, at others, they dont. A nudge or slight moveme...
1991 Ford F-150 Custom 5.8L No Start VIN: 1FTEX15H5M
This vehicle came to us after setting 3 years. The customer said it ran fine when parked , but now no start. We drained the fuel out of the rear tank (customer only uses rear tank). We added new fuel and pump runs but no pressure. We dropped tank and put in a ...
2005 Ford Escape XLT 3.0L No power VIN: 1FMCU93185
Ok here we go got this thing in its a friend of mine from pool league for an exhaust leak rear manifold leaking pulled it manifold was cracked cat looked good no melting or broken up welded up manifold and put back in finishing up job customer calls to check o...
2002 GMC Sierra 2500 HD SL 6.6L Drive or Reverse operation cold. VIN: 1GTHK23162
Truck came in with multiple codes: P0701 Transmission Control System Performance, P0846 Solenoid D Circuit Stuck open, P0848 Solenoid D circuit high. Truck would just rev up after going from park to drive or reverse. If you revved it long enough it would final...
2004 Honda Civic EX 1.7L radiator VIN: 2HGES26774
Hey guys so im working on a honda civic that we installed a year ago.customer came in Saturday explain the car smell of coolant and at time temp Gauge would go to hot but engine felt normal so we check for codes nothing found radiator leaking up top of tank an...
2007 Hyundai Tiburon SE 2.7L MIL Lamp on VIN: KMHHN66F87
has po153 and po171 and po174, part throttle LTFT is at 20% I unplugged airflow meter and cleared fuel trims and found STFT fuel trim is now -10 to -15 if I plug airflow back in STFT stars adding fuel +20% car has aftermarket K&N air filter installed. has anyb...
1996 Isuzu Trooper S 3.2L timing belt
Hello Fellow Techs, This is a friends car, she bought it after it had been sitting for a year. Was burning oil and coolant. She had taken it to another shop and they told her the head gaskets went. (I never looked at it myself). Instead of having the shop fix...
1993 Mercedes-Benz 400SEL 4.2L No Start VIN: WDBGA43E9P
Group I have a nightmare mercedes. I was asked to install a motor. Original jumped time and bent valves. I checked and had no compression. Replaced with used per customer request. Also noted loom to engine bad so replaced while apart. Installed engine, drove a...
1998 Mercedes-Benz E320 3.2L Controller VIN: WDBJH65F7W
Hi, I have replaced climate control head, blower was on high continuously and display was scrambled. I was not able to retrieve P1 and P2 values from old controller. Mitchell and the instructions for the reman controller are not clear as to the specific P1 and...
2003 Mercedes-Benz SL500 5.0L Roof VIN: WDBSK75F13
Car came in with a complaint of the vario roof side flaps not sitting flush on the trunk lid. Found that the mounting plated were bent and ordered updated plates. Installed the new ones and the flaps were sitting flush against the trunk lid. I operated the ro...
2007 Mercury Montego Premier 3.0L front supsension VIN: 1MEHM42167
This car has a noise that sounds like a thud or metal snapping noise. It is not when hitting bump but when entering a parking lot or dip in the road. We have replaced drivers lower control arm which had a slightly loose ball joint, both front sway bar links a...
2003 Nissan Altima 2.5L Surge VIN: 1N4AL11DX3
Thanks ahead of time for all your help. This car is a regular of mine with an interesting problem. Customer complained of a surge under acceleration. Test drive showed that under light acceleration car runs fine. When you apply roughly 30% throttle, the rpms r...
2005 Nissan Altima S 2.5L no overdrive
2005 Altima with a re4f04a transmission.Vehicle came in with burned up transmission.We removed it and overhauld it.we put the transmission in and found it will not shift to overdrive.After removing the transmission and finding no problems we put it back in and...
1998 Oldsmobile 88 Royale 3.8L No Start, Stall VIN: 1G3HN52K4W
car was towed in for a no start concern with codes p0108 and p1106. Replaced sensor with one off of a car on the lot and sensor read 1.56 volts at idle, drove good, ordered new MAP sensor, installed and vehicle won't start and MAP is reading 4.56 volts with ne... Trouble codes: P0108, P1106
2008 Pontiac G6 2.4L steering torque sensor VIN: 1G2ZG57B68
please help!this car came in with noisey electric steering motor and and steering wheel would bump back and forth on its own.has code c0545(steering torque sensor input). I checked all wiring and connections found no problems.Recalibrated steering wheel positi...
2005 Saturn Vue 2.2L no start, no comunication with ECM VIN: 5GZCZ23D75
Vehicle in shop for a no start condition, but started fine. Stored P1599 in ECM. Rechecked next morning, no start or comunication with ECM. Pushed into bay then started right up full comunication with ECM no DTC's. Verified integrity of previous wire repair, c...
1997 Toyota Land Cruiser 4.5L belts VIN: JT3HJ85J9V
I have put two sets of belts on this cruiser on the waterpump to alt. The front belt will come apart after several hundred miles. The pulleys are in line and are shiney the tensioner is new and aligned. I guess what Iam asking has anyone seen this on these cru...
2000 Toyota Avalon XL 3.0L Hesitation, Surge, MIL Lamp on VIN: 4T1BF28BXY
Customer reports engine intermittent surging, MIL and ABS lights on and speedometer reading zero. We replaced the AT speed sensor and cleared engine P0500 but experienced the same conditions right afterward. We then cleared the engine code P0500 again and the ... Trouble codes: P0500 (Speed sensor A fault detected), 33 (Right rear wheel speed sensor fault), 34 (Left rear wheel speed sensor fault), 62 (ABS ECU malfunction)
2000 Toyota RAV4 2.0L MIL Lamp on VIN: JT3GP10V1Y
Customer complaint is condenser fan on (passenger side) runs constantly with key on engine off and also with engine running on start up. Initially it stored code p0115 and the new ect sensor corrected that issue. According to alldata, the fan should shut off a... Trouble codes: P0115
2000 Toyota Echo 1.5L p0171 VIN: JTDAT1236Y
Customer brought in car originally for a dead catalytic converter, p0420 set. Honey comb was non-existent, replaced with new converter and all hardware cleared code. Car previously had new (non-Denso) o2 sensors installed at another shop so I reused them. CEL ...
2002 Toyota Corolla CE 1.8L No Start VIN: 2T1BR12E72
Car came in as a no start. If you let it run for 30-40 minutes, the fuel pump would quit. We replaced the fuel pump, and now have proper fuel pressure, but the car will not start. We've noticed the P1305 code repeatedly returns. My question is, will 1 code/mal... Trouble codes: P1305
2005 Volkswagen Beetle GLS 2.0L Radio VIN: 3VWCM31Y25
Good afternoon iatn i have an 05 vw beetle the radio stays on and the drivers door lock is inop i did some research and found that you can play the radio up to an hour with the key off well mines stays on way longer than an hour im trying to find a little bit ...
2006 Volkswagen Passat 2.0T 2.0L Hesitation, Surge, Cuts out, MIL Lamp on VIN: WVWEK73C36
Customer came in with a complaint of a check engine light on and hesitation or a surge while going up hill or at highway speeds. Brought the car in and scanned for codes and found p2293 fuel pressure regulator 2 performance and p0172 system too rich bank 1. We... Trouble codes: P2293, P0172

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2005 Chevrolet Trailblazer EXT LT 5.3L No Start VIN: 1GNET16M85
THANKS EVERYONE: in doing research I found that the rpo code lh6 vin code m calls for aluminum block and 24x crank sensor/1x cam reluctor for years 2005-06 . The engine builder installed a 58x and 4x combo thus causing this whole mess , in addition the black... Trouble codes: P0335 (Crankshaft sensor circuit).
2009 Chevrolet Silverado 1500 WT 4.3L spark knock VIN: 1GCEC14X49
Here is what we did: First we disconnected both knock sensors and monitored the scan data with the vehicle in gear. Load was 91%, MAP was 81 kpa, MAF was at 11.86 gs, TP was at 22%, RPM was 540. These indicated that the engine was under a very heavy load. ... Trouble codes: P0326.
1990 Honda Civic DX 1.5L No Start, Cuts out, Stall VIN: 2HGED6344L
It was the ignition switch as many of you had said. Replaced it with a used switch and it starts, runs and drives great. I never would have thought of that without your help. Thanks very much.
2005 Jaguar Vanden Plas 4.2L MIL Lamp on VIN: SAJWA82C95
Replaced throttle body after disconnecting battery. All is good and code did not return. Thanks guys Trouble codes: P2135.
2000 Lexus GS300 3.0L Vvt VIN: JT8BD68S2Y
Thank you for every ones advice. Turned out to be very easy. Made sure everything went back together the same as it came apart. The VVT was not leaking, just the cam seals. Thank you again.
2002 Mercedes-Benz ML320 3.2L Erratic Ion Reading VIN: 4JGAB54E32
I got 4 replies to my information request and basically they all said to ignore the Ionic Current Spark PIDs on the scan tool for a Mercedes with the exception of the V-12. It was stated that Mercedes only used this input on the V-12 models. It was also stated...
2006 Mercedes-Benz CL500 5.0L tandum pump VIN: WDBPJ75J36
Thanks for the input . The accumulator was the issue and replacing it took care of all the noise .
2007 Mercedes-Benz E350 3.5L No Start VIN: WDBUF56X97
Sent car to another shop for second opinion. They suspect a bad ME which is what we suspected. Not sure if the flashing had anything to do with it not wanting to start when we sent it over to other shop. They seem to think it was possibly cylinder wash out due...
2004 Mitsubishi Endeavor LS 3.8L Surge
I did smoke test this cold and hot just to answer that. There were no visual signs of any severe overheating but because it was extremely low on coolant I'll assume it did run hot enough to cause the oil leak issue. Customer is making there decision on engine ... Trouble codes: P0300.
2010 Nissan Titan PRO-4X 5.6L MIL Lamp on VIN: 1N6AA0EC4A
Replaced Maf sensor and code did not come back. Was very hesitant at first since MAF was working properly at the time and it's not very old. Thanks guys. Trouble codes: P0172, P0175.
1995 Toyota Tacoma DLX 2.4L ign. system VIN: 4TAUN53B4S
My apology for not closing this request sooner and the truck was fixed but not by me. To recap; customer authorized tune as "it's been a long time" according to him. R&R'd badly worn plugs, full wire set as no.4 plug insulator was arcing inside the head along ...
2007 Volvo S60 2.5T 2.5L Poor Idle Quality VIN: YV1RS59297
Thanks for all the replies. AS it turns out I probably had the exhaust cam off a little, I was pulling the reluctor wheel off for a thorough look and while loosening the bolt I inadvertently loosened the vvt hub bolt so I started from scratch and removed the t... Trouble codes: P0345.
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