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Prev Professional Automotive Repair Technical Discussions for January 2, 2014
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Open Help Requests for All Makes and Models
Help Request Answers
2001 Audi A6 Quattro 2.7L abs VIN: WAUED64B91
red abs lite on dash warning lite on dash no codes in abs system using vcds- I can see all abs sensors working up to 20 kmh reset l/f sensor in bore- r/f sensor is frozen in place replaced both front axles shafts, rotors and pads due to wear and noise both fro...
1994 Cadillac DeVille 4.9L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: 1G6KD52B5R
I will keep this short and simple. I have been working on this caddy for a while now and have ruled out everything more than once or twice in most cases. I have performed voltage drop tests on both the power and grounds for both the pcm and engine: ie engine g...
2005 Chevrolet Silverado 1500 LS 5.3L Cruise Control VIN: 2GCFC13T25
The cruise will operate correctly as long as the lights are off but disengages as soon as the lights are turned on. Don't know where to turn next, looking for some expert direction from IATN members. Thanks and Happy New Year
2007 Chevrolet Express 3500 6.6L Regeneration VIN: 1GBJG316X7
Vehicle came in for system not going into regeneration. Trouble codes P2463, P244B and P0504 were stored. Cleared all codes and attempted regeneration with tech II. System wont go into regeneration. The P0504 trouble tree doesn't come up in Alldata for this ye... Trouble codes: P0504 (Brake switch correlation), P2463 (Particulate filter), P244B
2004 Chrysler Sebring Touring 2.7L MIL Lamp on VIN: 1C3EL56R84
vehicle keeps setting codes 171 and 174. ltft's are at 28 to 30%. engine runs very smooth. power is normal. engine burns about a litre of oil every 2000 kms. engine has been run with all vacuum lines disconnected and plugged, fuel system has been disconnected ... Trouble codes: 174 (Lean bank 2), 171 (Lean bank 1)
2005 Chrysler 300 C 5.7L p1644 VIN: 2C3JA63H35
I got a call to program the transmission on this 300m, it had a code P1644 so I flashed the transmission module and the valve body initialized reset the adaptations, I still have the P1644 code, is this like a Mercedes transmission that you have to buy a new v...
1991 Ford Ranger Custom 2.3L No Spark VIN: 1FTCR10A5M
Help guys. This ranger died & was towed into my shop. No spark from primary coil but it has spark from secondary coil. I've replace the crank sensor, coil, module & even the ecm. Please help
2001 Ford F-150 King Ranch 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTRW08L01
This vehicle is about to be released to the customer until the symptom becomes more apparent and consistent. It seems to occur more often when the weather is below freezing (32 deg). No freeze frame that indicates any input faults - all readings are belieavabl... Trouble codes: P0171 (System lean bank 1), P0174 (System lean bank 2)
2004 Ford F-150 Lariat 5.4L Hesitation, MIL Lamp on VIN: 1FTPW12504
vehicle came in with customer stating service engine soon light on we scanned codes and retrieved p0174 lean bank 2 code. first without hesitation I fired up smoke machine and tested intake and emissions system and found no leaks and now I was scratching my he... Trouble codes: P0174 (lean bank 2)
2005 Ford F-350 Super Duty Lariat 6.0L MIL Lamp on, no boost VIN: 1FTSX31PX5
Hello,I have this 6.0 diesel that will set a code p0046 after second start up each time codes are cleared. we have replaced the engine harness, which we found evidence of heat damage. We also replaced the VGT solonoid & egr valve. MY question is am I missing s... Trouble codes: P0046
2009 Ford F-150 Platinum 5.4L transfer case VIN: 1FTPW14V39
customer complains of clunk when reversing. Brought in for road test. After putting in reverse the vehicle will start to move and has a loud clunk which seems to be coming from the transfer case. Sometimes will do it in drive, but usually reverse. Have checked...
1999 Jeep Cherokee Sport 4.0L Poor Idle Quality, Surge, Stall VIN: 1J4FF68S4X
Happy new year to all of you! This jeep is doing something satanic, as soon as starts, goes to 4300 rpms!. no codes. The only suspected data on scanner is Map 2.30 v. KOER Problem started after the exhaust manifold, oil pan gasket and valve cover gasket were r...
2006 Land Rover LR3 4.0L starter VIN: SALAD24496
This vehicle don't turn over almost like the theft system is active when you turn on the ignition all lights on dash is on hazard blinks as well as park brake light and the all terrain light the special function message is displayed and there is no communicati...
2008 Mazda Tribute i 2.3L power assist VIN: 4F2CZ02Z18
Unfamiliar with electronic power steering assist...There, I said it! Apparently I have no software on my genysis to aid in diagnosis, so, the symptoms are these: occasional no power assist, and/or a slight vibration or pulse in the steering wheel is felt. All ...
1995 Mercedes-Benz SL500 5.0L soft top VIN: WDBFA67E3S
oky guys i have this m/b here will driving top down or up the roll over bar indicator lite will go on and off. i scaned for codes pull code for internal fault in rv mod and wouldnt clear. well before we got the car custemer researched him self and thought it w...
2000 Mercedes-Benz S430 4.3L abs VIN: WDBNG70J2Y
Happy new year all, I have a strange situation going on with this car, when slowing down using the brakes the abs kicks in for no apparent reason.when I monitor the wheel speed sensors there is no apparent drop out, and all speeds are as close as I would expe...
1986 Nissan 300ZX 2 2 3.0L Stall VIN: JN1HZ16SXG
Need some help from the membership pool on this one. The vehicle will start up and run off the inital fuel prime but after that will deplete fuel and die. The problem here is what does the ecu rely on to allow pump operation my guess would be rpm from crank si... Trouble codes: 23 (Idle switch), 31 (Load signal)
2004 Nissan Murano SL 3.5L Speedometer VIN: JN8AZ08T14
Hello group- I need some help understanding the theory of operation on this 04 Murano's speedometer, as well as a tip on where to go from here. Let me begin by explaining how I think this system works, and what testing I've done so far on it. If I understand ...
2005 Nissan Xterra Off-Road 4.0L Computer VIN: 5N1AN08W15
Good day to all. I have this Nissan Xterra that will go into limp home mode after the transfer case has been engaged for about 7 to 8 minutes. The check engine light comes on and the codes are u1000 and u1001. If you let it sit for a couple hours the the trans...
2002 Porsche 911 Carrera 3.6L conv. top VIN: WP0CA29962
Hey guys, i want to check the hydraulic fluid level for convertable top pump. I cant seem to locate the pump assembly. Any help would be greatly appreciated. Thanks!!!
2007 Subaru Outback 2.5i Basic 2.5L engine VIN: 4S4BP61C87
This car was brought to us from another shop with a no start condition. I was told from the other mechanic it was a torn timing belt. The customer also wanted the heads removed to replace the head gasket and check the valves. We pushed the car in and I started...
2010 Subaru Outback 2.5i 2.5L shudder when turning tightly VIN: 4S4BRBAC9A
hey guys and girls. I've got a 2010 Subaru outback, 2.5 motor. it's got the "Subaru awd clutch" shudder when doing tight parking lot turns. I work on a lot of Subaru's, and see this problem a lot. usually though, it is on the automatic cars, and a thorough flu...
2014 Subaru Legacy 2.5i 2.5L Srs VIN: 4S3BMBC61E
This Legacy was involved in a prior collision and was purchased with the repair work already completed. It was brought to us with all malfunction lights on (SRS, ABS, parking brake, MIL). We had no communication with all systems. We found that the battery had ...
2007 Toyota Camry XLE 3.5L gear engagement VIN: 4T1BK46K67
Car came in with check engine light on and no problems. Scanned - code P2716 pressure control solenoid 'D' electrical. Found a bulletin for a reflash for this condition. Customer wanted to replace the solenoid. I replaced the solenoid with new filter, gasket a...
2007 Volkswagen Passat Value Edition 2.0L MIL Lamp on VIN: WVWLK73C57
This vehicle first came in 6 months ago for an engine noise. We replaced the high pressure fuel pump and the intake camshaft(ground up badly). 3 months later the vehicle came in with P3073: Fuel pump electrical malfunction/no communication and p000a: camshaft ... Trouble codes: P000A, P0300
2000 Volvo S80 T6 2.8L start then no start VIN: YV1TS90D8Y
start car turn car off then will not restart unless u disconnect battery 10-20 sec. will restart every time after the battery is disconnected, have Vida codes are = 0004 uem siren communication falt,1a62 cem communication with ECM signal missing, 0093abs commu...
2001 Volvo S60 2.4L blower motor VIN: YV1RS61R71
Volvo technicians please help. I have a 2001 Volvo s60 with a heater blower motor problem. The problem is it doesn't blow in cold weather (like near "0" degrees ferenhight). As soon as you bring car in a warmer shop (45 degrees)it will start to work. The blowe...
2001 Volvo S60 2.4L MIL Lamp on VIN: YV1RS61N51
vehicle came in with another miss. different cylinder was missing than previously repaired. exchanged two coils and miss followed coil. customer figured we should probably replace all coils since now two were faulty. we replaced other four coils ( one done pre... Trouble codes: P0354, P0354, P0353, P0352, P0351
2002 Volvo S60 2.4L MIL Lamp on VIN: YV1RS61R32
vehicle came in whistling loudly. we removed oil cap and noise went away. Replaced the pcv/oil seperator box and noise is gone. vehcile came back in with P0171. stft is at -26 while ltft is at +40 at idle. checked fuel pressure is at 55psi, checked for leaks w... Trouble codes: P0171

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2006 Audi A4 2.0L abs VIN: WAUDF78E76
Vehicle ended up having two problems.#1 was the in tank fuel pump[Lift pump] Was on it'sway out replaced and that got it's duty cycle down to the desired 40 to 50 % duty cycle,second was the abs/esp module was loosing communication with the rest of the car,sen...
2000 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54YXY
Ok this one is fixed. On the multiple suggestions to check all the power and grounds from the pcm, I performed voltage drop checks while the car was running on connector c1 pins 19, 20, 21, 63 for 12v to the battery. And again on connector c1 pin 60 and conne... Trouble codes: P0101 (Mass Air Flow Circuit Out of Range), P0335 (CKP Sensor A Circuit Problem), P0356 (CKP Sensor B Circuit Out Of Range), P0741 (TCC Performance or Stuck Off), P1599 (CC Power Management Mode or Engine Stall), P1621 (PCM EEPROM Memory Performance).
2001 Chevrolet S10 LS 4.3L Fuel Tank VIN: 1GCDT13W51
2006 Chevrolet Trailblazer LT 4.2L Misfire VIN: 1GNET16S46
Thanks for all the responses. The car has not been back in to do cylinder leak down or any further testing but I am guessing from all the responses that's what I need so I can tell him he needs some head work. Again thank you. Trouble codes: P0300.
2009 Chevrolet Traverse LS 3.6L Mechanical VIN: 1GNEV13D99
What a story... The engine did jump time, and it did not bend any valves at all.. I have talked to several techs who work on these loads of junk daily and they all said these are JUNK engines but they've never seen a bent valve in one.. BUT, they all talked ab...
2004 Chrysler PT Cruiser Limited 2.4L overheat VIN: 3C8FY68814
The customer decided to go forward with the repairs. Our work load was pretty light because of the holidays so we decided to do the job. We pulled the head and found that cylinders two and three were getting coolant into them. Had the head tested and milled. R...
1998 Dodge Ram 3500 5.9L Tach and cruise VIN: 1B7MF33D1W
Hey guys, Sorry it has taken so long to get back on this vehicle and to respond to you. Thanks to all. Paul said to shcek the air gap on the tach sensor. .020 to tight. Then I unplugged the VSS and no difference. After setting the Tach sensor correctly, ...
2006 Dodge Charger 2.7L cooling sys. VIN: 2B3KA43R86
thanks for all good advise,i was able to replace the plastic flange that was leaking, did not have to replace the pipe it was ok.
2008 Dodge Grand Caravan SXT 3.8L starter VIN: 2D8HN54P08
After going round and round with every thing I could think of, I finally bought the WSM module (fobik switch)in the dash. I had it programmed and yes, we are back in business. I found out there is some kind of restriction on this part from Chrysler. There was ...
2000 Ford Focus SE 2.0L Mechanical VIN: 1FAFP36P8Y
Most of you were dead on. #4 cylinder coming apart. What fooled me was the type of noise it made. Thank you all for your time.
2001 Ford Windstar LX 3.8L Intake gaskets? VIN: 2FMDA51451
Thank you for all of the replies on this one. It turned out that the cowl drain was plugged up and caused the rain water hydro-lock. I replaced the upper and lower intake gaskets, spark plugs and injector seals. I also found about a 1/2 quart of water in the o...
2003 Kia Optima SE 2.7L Hesitation, Surge VIN: KNAGD12873
Thanks to everyone who replied. With all your help we figured it out. Ended up being the TPS. We replace the TPS and reset the computer and the TP % started responding like it should. Thanks to all of you for your support.
1994 Lexus LS400 4.0L Surge, Misfire VIN: JT8UF11E2R
We removed the NGK wires and replace with a set of Denso wires. The customer has been driving for 2 weeks with no problem so far but I'm still not totally convince its fixed. Definitely its not a cam timing problem. Trouble codes: 13 (Cam Position Sensor).
2007 Lexus GS350 3.5L Window squiter and fog lights VIN: JTHBE96S67
The only reply stated to check pin out in Lights and horns. Good Info. Which we had done before we ordered the left front body module. I was not sure if the module was going to fix the vehicle because I wanted more info on how this system worked. But when t...
2008 Lincoln MKZ 3.5L Airbag VIN: 3LNHM26T28
We took the vehicle to the dealer for the IDS system reset and they could not but told us to replace both rail sensors. We had already replaced one so we replaced the other but still could not clear codes or reset. We tried a new OCSR module and that did not w...
2002 Mercedes-Benz ML320 3.2L ABS light' on VIN: 4JGAB54E32
Thanks for all the quick replies! Specially Steve [...] for pointing to the WIS 42.45-P-3000-03A for ESP function check. But the way MB engineers try to explain is way to over complicated. After drive test is activated:ABS light will come on! engi...
1999 Pontiac Grand Am GT 3.4L No Start, Stall VIN: 1G2NW12E4X
I'm not sure why this request is still open because I closed it the same day I posted it and received an email that confirmed it. The fix was a new IAC motor
2003 Saab 9-3 Arc 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: YS3FD49Y03
The problem with this ended up being the ecm. We checked voltages on throttle sensors and pedal sensors, inc. sweep testing. All voltages were good and steady except for the p1 throttle actuator sensor. the voltage was very erratic, but within 30-70mv. upo and... Trouble codes: P0300, P2135, P1681, P0638, P1523.
2001 Toyota Sequoia SR5 4.7L 4wd switching
Gentlemen, first off thanks to all that replied...much appreciated. I attempted to cycled the transfer shift motor (Motor mounted to rear of T/Case) from 4Hi to 2wd by setting up a relay to the actuator terminals & heard only a slight noise & thought that was...
2009 Toyota Camry Hybrid 2.4L Unknown VIN: 4T1BB46K19
well this one is fixed thanks to Kurt [...](he said to check coolant level) low coolant caused the problem, I had looked in overflow tank and it was up to mark, thinking it was all ok I kept digging for the cause, took dash apart to find heating element, che...
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