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Prev Professional Automotive Repair Technical Discussions for August 21, 2014
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Help Request Answers
2004 Audi A4 Quattro 1.8L Poor Idle Quality, Surge VIN: WAULC68E04
After the head job was done the car now overboosts a lot. Customer has a digital boost gauge in the car reading off the intake manifold directly. I verified its operation against a mechanical one and they read the same. customer stated the car would always max... Trouble codes: 16795 (seconday air injection system incorrect flow detected), 16396 (bank 1 - camshaft Aintake advanced set point not reached over retarded)
2010 Audi Q7 TDI 3.0L No Start, Hesitation, Stall, MIL Lamp on VIN: WA1JMCFE7A
Dear Audi friends, according to the Ross-Tech website there is for this fault a Technical Product Information out TPI-2020693. I looked high and low on the Erwin-Audi website in NAR and RoW, but I can't find any TPI's or TBS on the factory Website, even Ross-... Trouble codes: P0087
2004 Cadillac DeVille DTS 4.6L Front Struts VIN: 1G6KF57944
I have installed passve struts at the request of the customer instead of the very expensive speed sensitive struts from cadilac, but the ip displays "speed limited to 90 mph". The customer would like no warning messages. Monroe has not been helpful in bypassin...
1971 Chevrolet K30 Pickup 6.6L compressor VIN: KE241S6606
Customer recently had a performance shop replace the wiring harness with a Painless Harness. It's a neat job, looks good, but the problem is the AC compressor stays on with the key on. I accessed the 3 terminal relay under the dash, and the 2 terminal switch o...
2006 Chevrolet Corvette 6.0L Battery VIN: 1G1YY36U96
battery goes dead after a week. when i pull BATT 5 fuse number 7, 30amp in under hood fuse box the draw goes down to 15 milliamps. that fuse powers up a bank of fuses in the BCM. Those fuses are tele sw/mem seat mod 10amp, driv dr sw fuse 10amp, ignition sw/in...
2005 Chrysler Sebring 2.4L engine VIN: 1C3EL46X75
no spark. changed coil. i find that a 05 chry comp has 5 volt output, were a 01 chry has 8volt output, quest is would a 3 volt drop at the crank sensor cause a no start?
1996 Dodge Intrepid 3.5L Hesitation, Stall, MIL Lamp on VIN: 1B3HD46F2T
check fuel pressuer 35 psi idle replace map and connector no change has check enginge light on runs better if map is unpluged Trouble codes: P0108
2005 Dodge Durango Limited 5.7L Hesitation, MIL Lamp on, no throttle responce VIN: 1D8HB58D55
hello friends, vehicle is losing throttle responce while driving, engine will only idle. cycle key off and restart car and throttle responds until symptoms reoccur, codes are setting, crank position sensor and other codes with electronic throttle controls, ref... Trouble codes: P0335, P2122, P0642, P1618
2010 Dodge Challenger SRT8 6.1L No Start VIN: 2B3CJ7DW6A
this is a hurricane sandy car, from what i can tell is that the water was halfway up the dash. i also got the car with no key fob. i am trying to get the key programmed i need to know which modules i need working to get this done. the modules i have working ar...
1998 Ford E-150 Econoline Club Wagon Chateau 5.4L coolant from exaust VIN: 1FMRE11L8W
came in smoking white from exhaust smelling of coolant. Determined intake gasket leaking. replaced gasket and found gasket cracked from coolant port to intake port. happy with repair. van went home for 700 miles all ok. came back smoking, not as bad but still ...
2000 Ford F-350 Super Duty Lariat 7.3L Noise/vibration VIN: 3FTSW31F9Y
This 4X4 Ford has a noise/vibration at 60-70 MPH. It can be heard and felt while lightly accelerating at times and always on deceleration. It can be felt under your left foot. I saw that there are problems with the needle bearing in the front hubs so we pulled...
2003 Ford Excursion Eddie Bauer 6.0L No Start
This Excursion came in as a no start. I monitored the ICP and found it to be at 350 psi. So we replaced the high pressure oil pump and IPR valve. After the repair the vehicle starts cold every time, however after it gets hot it will not start. We followed the ... Trouble codes: P132B
2004 Ford Explorer XLT 4.0L drivetrain VIN: 1FMDU73K24
I get a clunk noise when I turn the steering all the way one way and accelerate, it happens turning either way, feels like the truck is on ice even when on solid, hard, hot asphalt. It will clunk then the truck shakes like it has bad u-joints??? This only happ...
2004 Ford F-350 Super Duty Harley-Davidson Edition 6.0L door locks VIN: 1FTSW31PX4
door locks will not lock from any switch,tried known good switch same result.use ford ids and i am able to command the locks to function DTCs found,all modules show active and fine.have also re-flashed i have assumed the wiring and actuators are fi...
2005 Ford F-250 Super Duty King Ranch 6.0L valves, rods VIN: 1FTSW21P05
Need some help here techs. This vehicle was towed to our shop as a no start. We did the usual inspections and pretty quickly discovered that the high pressure pump was bad. We had replaced the pump in 2010 and have always had a great relationship with the cust...
2007 Ford Freestyle SEL 3.0L Input Shaft O ring VIN: 1FMDK021X7
We're replacing a CVT unit that was bad with a known good working used unit, was replacing the front pump seal, there is an o ring on the shaft going in the torque converter that broke. The Ford dealer or transmission parts store doesn't seem to be able to com...
2006 GMC Sierra 1500 WT 5.3L Rear Main Seal VIN: 2GTEK19B56
Ok here goes guys, i am losing my mind on this one...vehicle came in with leaks at rear main seal as well as cover and oil pressure switch, put in a bottle of dye to confirm locatoins...replced seal, gasket and switch with no leaks from switch but rear main is...
2001 Honda CR-V LX 2.0L MIL Lamp on, Po422 VIN: JHLRD18421
This car keeps setting a PO422 code but runs perfectly. My issue is that the fuel trims are running high (short term bank 1 5.47% Long term bank 1 7.03% The front Oxygen sensor is working normally (0.10-0.82 changing normally ). Rear O2 sensor is ranging betwe... Trouble codes: P0422
2008 Honda Accord LX 2.4L Radio VIN: 1HGCP26488
While driving the radio and radio/clock display cut out briefly. Doesn't seem to be related to bumps, can't duplicate it by wiggling wires and connectors under dash. Has 4 fuses related to radio, I have verified that 2 still have power when the issue occurs, h...
2002 Hyundai Santa Fe GLS 2.7L evaporator VIN: KM8SC13D32
I have replace the thermistor twice both Hyundai parts I ohmed the thermistor at different temps and it works the contrl head has been replaced, if I disconnect the thermistor the compressor stops. there is a 5v reference to the thermistor and while running dr...
2003 Kia Optima SE 2.7L Power Door Locks VIN: KNAGD12803
First of all I would like to thank you for any information you might have to share for this concern. I have a 2003 Kia Optima giving me grief. Three of the four power locks will not lock. The driver's power door will lock/unlock normally. Passenger's front doo...
2005 Lexus GX470 4.7L MIL Lamp on VIN: JTJBT20X55
i added 12 volts straight to pump and pump works as designed opened pump filter is intact. tested the valve with presure sensor and it hold presure as well as opens when activated. i tested the valves in rear of engine also tested both vacume switching valves.... Trouble codes: P0418, P2445
1991 Mercedes-Benz 190E 2.3 2.3L Cuts out, intermittent VIN: WDBDA28D0M
HEY thanks for all the help in the past. Here is another one. I almost decided to replace the fuel pump on this one but another tech said that a common problem causing this is a black box on the fuel distributor that regulates fuel can cause this symptom. I c...
2013 Mercedes-Benz CL550 4Matic 4.6L ride VIN: WDDLJPBB0D
we have this car was at body shop replaced front left strut came to us car sits low left side when you push button to raise car pump come on and car goes up but still low left when looking at psi with scan tool all about same when looking at ride show left sid...
1993 Mercury Cougar XR-7 3.8L Poor Idle Quality, Misfire VIN: 1MEPM6243P
Thanks for taking the time to help me out. This car came in cutting in & out at cruise, and rough idle that developed very quickly over the course of one day. We changed the spark plugs and the problem was gone...for 1 day. The problem came back in the form of...
2000 Mitsubishi Montero Sport LS 3.0L Unknown VIN: JA4MT31H1Y
With a scanner preformed actuator switch test . at control relay , 2nd solenoid, l/r solenoid, od solenoid, ttc solenoid, and under drive solenoid, they all click, trans fluid smells good and is red. 1. 2. 3. 4 show up on scanner. but will not shift into overd...
1997 Nissan Altima GLE 2.4L MIL Lamp on VIN: 1N4BU31D7V
Hi all Techs out there this Nissan has engine light on replaced knock sensor, after reset engine light All monitor not reset it need for smog a customer drove about 300 mils all monitor still incomplete. I know oxygen sensor have to working right I did check i...
2005 Nissan Altima S 2.5L Pressures VIN: 1N4AL11DX5
car came in to our shop from another shop stating that the compressor wouldnt engage, we hooked up guages and system was empty, evac and recharge and compressor engaged and we got the low side pulling into a vacuum, simple expansion valve right? well it fixed ...
2012 Nissan Versa 1.6 S 1.6L Unknown VIN: 3N1CN7AP6C
Intermittently around 35 to 40mph the CVT will act like its hunting to find the right position. The RPMs will jump from 2k to 1k then back up again or jump from 2k to 3k. I checked the fluid level with CVT temp at 104 degrees Fahrenheit and made sure fluid dri...
2000 Oldsmobile Intrigue GLS 3.5L affected item unknown VIN: 1G3WX52H6Y
HELP!!! This vehicle is driving me crazy. This is the second time that this vehicle is in for the same noise. Customer complains that when they are backing up with the steering wheel turned to either side, but not to a full stop, there is a loud clunk or metal...
2002 Pontiac Grand Prix SE 3.1L No Start VIN: 1G2WK52J62
Towed in, cranking no start. No codes. Spark test / pass. Fuel pressure test / pass. Injector pulse test / fail. Have power supply to injectors with no drop during crank. Tech II data with key on shows 85% engine load (does not change with MAF unplugged), 7x s...
2002 Subaru Impreza WRX 2.0L Hesitation, Cuts out, Lack of Power VIN: JF1GG29652
Vehicle came in for low power and customer complaining of turbo not working properly. Test drove vehicle and was able to duplicate customer concern. Factory boost gauge above steering wheel would show vacuum and would never build boost. Needle would almost mak...
2004 Volvo S60 R 2.5L Hesitation, Stall VIN: YV1RH52Y74
This car has been a headache since the word go. The owner drives this car VERY hard and it sees red line regularly. Originally the vehicle came in with the classic crack on top of the fuel pump unit and the customer complaining of fuel odor. A coworker replace... Trouble codes: 211A, 928C
2004 Volvo XC70 2.5L Poor Idle Quality, Stall VIN: YV1SZ59H64
All has been good until a month ago when the car developed a problem and intermittently dies. Customer pulls over and restarts the car and is good for a while. There are also times that the engine drops to an idle and wont accelerate. Customer pulls over waits... Trouble codes: ECM40

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2004 BMW 330Ci 3.0L MIL Lamp on VIN: WBABW53484
Really want to thank all who offered help with BMW issue, customer came in after I left yesterday and picked car up but said he would bring back next week.As soon as I get car back will recheck and let everyone know what it took to fix. Again thanks to all ... Trouble codes: 2882 (2883 -), 2883.
2006 BMW 330i 3.0L Poor Idle Quality, Stall, MIL Lamp on, long crank VIN: WBAVB33596
We took the intake off and found both "flaps" inside the intake were broken. We also found the PCV hose was split as well. We had smoke tested the intake and there were no leaks found and yet the pcv hose was split. If you have a similar problem as we have had... Trouble codes: 2A2F, 2A2E, 29CD, 29D9, 2DEC, 2F0D.
1999 Chevrolet C2500 Suburban 7.4L Cuts out VIN: 3GNGC26J5X
2007 Chevrolet Suburban 1500 Z71 5.3L MIL Lamp on VIN: 3GNFK16367
First of I want to thank you everybody that replied , most suggestion lead to the connector at the accelerator pedal; or the connector at the Throttle body. In this case the problem was on the wiring on the light blue signal wire from the pedal to the computer... Trouble codes: P2127, P2138.
2006 Chrysler 300 C 5.7L Engine VIN: 1C3H9E3H76
Thank you all, your replies were very helpful Thank you. The engine is only just being remove today, I was hoping I would have had some better feed back on this fix. Unfortunately I need to close this case so therefore I can not let you know my decision. Excep...
2006 Chrysler 300 C 5.7L Suspension VIN: 2C3KA63HX6
Sorry for the delay in closing. I did replace both sway bar links and frame bushings. Customer drove it, it was definitely improved but not totally fixed. However his wife said he could not "spend any more money on that stupid car!" So that is where we are at....
2010 Dodge Grand Caravan SXT 3.8L Cuts out VIN: 2D4RN5D18A
This issue is very intermittent and only happens briefly, I was hoping for a lead on where to start. No clear pattern of failure. If I had to guess by the way it feels I would say either the cam or crank sensor signals are deteriorating when it is hot. Only oc...
1966 Ford Mustang 4.7L Misfire
Group I have got the miss gone. Thanks to all who responded to replace the distributor. Seems the shaft and or the pints opening cam was bad in this one throwing the points open barely enough to fire. I replaced with a reman and she purred. Have a great day an...
1989 Ford F-350 XL 7.3L ABS light VIN: 1FDKF38M5K
I had already checked the locations which were suggested by others. The customer did not want to authorize the removal of the entire dash to dismantle the wire harness. It was also apparent that the dealer discontinued the part so the customer declined furthe...
1996 Ford F-250 XL 5.8L ignition system VIN: 1FTHX26H1T
Thank you to all who replied to my TechHelp request as much of the information was useful and valid. There ended up being two failed parts on this vehicle that caused the cranks/no start concern with no spark from the coil. Those parts were the ICM (ignition c...
2002 Ford Explorer XLT 4.6L temperature VIN: 1FMDU63W02
Thanks for all the replies. Ended up getting OEM condenser and it was bigger in size. It seems to have fixed it and the pressures looked great
2006 Ford Expedition XLT 5.4L mode doors VIN: 1FMPU16526
thanks all for your replies. Smoke test revealed tiny vac. leak in short line near battery, probably melted by acid. Leak fixed, a/c works perfectly.
2013 Ford Focus Titanium 2.0L Cooling Systems VIN: 1FADP3N29D
So I went ahead and pulled the air doors out to check the theroy of them not opening. My customer has been driving for about 2 weeks with no problems. So we replaced the shutter actuator and a few days of hot / stressed driving and everything is working well...
2004 GMC Envoy XUV SLT 4.2L Rear End Locks Up In Auto 4wd / 4wd Only VIN: 1GKET12S44
It seems that there was some front differential work done before, either before they owned it or during??? We blocked the left side wheels from turning, chalked the right side tires at the bottom, spun the drive shaft until right rear tire made two revs, right...
2003 Kia Sedona EX 3.5L Gauge VIN: KNDUP13113
Well this is not fixed yet. I ordered a factory sensor and as soon as the customer brings the vehicle and I get it put in and see what happens I will update this. Hopefully it will be with a fix.
1996 Mazda B2300 2.3L check engine light VIN: 4F4CR12A0T
thank you so much everyone for your advice and input. I ended up running a new wire from the MIL to the connector @ the instrument cluster. Apparently the original 1 is broken between the PCM and IP
1995 Mitsubishi 3000GT SL 3.0L oil press VIN: JA3AM54J1S
Changed the oil and got the idel up we're it needs to be s. At this point the customer says all is well. Thanks for the help
2004 Nissan Sentra S 2.5L Poor Idle Quality VIN: 3N1AB51A84
Hey guy sorry it took so long to respond everything tested good timing fuel coils .had 150 compression across the board am at a loss a lot of guy we're saying that was low so I explained to the cust and he didn't want to spend anymore money on the car so we l... Trouble codes: 300 (Random miss).
2012 Nissan Versa 1.6 S 1.6L p0171 VIN: 3N1CN7AP1C
thanks everyone for all your input. i checked fuel pressure and found at idle 46-47psi and at 2000 rpm 53psi. i dropped the tank and removed the pump. i didnt see any restictions so i replaced the pump, after all i had 55psi at idle. i cleared the code and its...
2003 Oldsmobile Silhouette Premiere 3.4L No Start, MIL Lamp on VIN: 1GHDX03E73
James from Michigan was (Bang on) with a pinched bared wire found under the Power steering pump against a intake bolt ,Red with yellow tracer. Repaired and works 100%. Pro's working with Pro's Really works on IATN. Thanks Len Trouble codes: P0336.
1999 Pontiac Grand Prix SE 3.8L Hesitation, Stall VIN: 1G2WJ52K3X
changed the upstream O2 sensor this morning, smoke test showed nothing leaking and also changed spark plugs. the O2 was switching and it looked good on the scanner until I graphed it out. it would lose pieces of the graph. Changed the plugs just because...I ha... Trouble codes: N0.
2001 Saturn L300 3.0L Misfire VIN: 1G8JW52R61
Customer did not want to spend any more money on car. Shes going to try and get 6 months out of it and get rid of it. I did find that the fuel pump was not holding residual pressure after the key was turned off. Calculated load pid on scanner was low. I told h... Trouble codes: P0300, P0301, P0302, P0303, P0305, P0306.
1998 Toyota Camry CE 2.2L Egr VIN: 4T1BG22K3W
Thanks to everyone that helped on this. It was the VSV. Must have tested 10 times hot and cold and showed good every time. Well I have been turning wrenches over 30 years, never would have thought that part could fool me. Again thanks
2005 Toyota RAV4 L 2.4L MIL Lamp on VIN: JTEHD20V85
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