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Prev Professional Automotive Repair Technical Discussions for April 12, 2011
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Help Request Answers
1986 Audi Coupe GT 2.2L No power to compressor VIN: WAUBD0859G
I have a full charge but no power to compressor. Looking for either the low pressure switch or A/C clutch control unit location or both would be preferred. I have scoured Alldata and Mitchel and searched the internet but have come up empty. I want to check inp...
2001 Audi A8 Quattro L 4.2L Stall VIN: WAUML54D31
to audi tech this car came in no fuel psi we checked power and ground to pump it was ok we replaced fuel pump car started up ran four 1 hour custamer picked up ran for about 3 hours he called car quit we whent to pick it up put 1 gallen gas startet up drove it...
1997 BMW 528i 2.8L tranny VIN: WBADD6324V
Good evening to all.Sorry for being lacking in info but Im hoping you guys can help.My Boss picked up this BMW and loves driving it but is getting anoyed with this issue.Problem is tranny will not upshift unless you manualy shift thru the gears (@ aroung the n...
2006 BMW M5 5.0L MIL Lamp on VIN: WBSNB93596
I cannot seem to find explaination of this DTC (2789). Also has ambient temp sensor [...], sensor tests good to me .8 volts at 80' F.,up to 2.2V. with "choke " cooler blowing on it,(approx.45'F.). New temp sensor only changesd by .1 V. I believe rough road ... Trouble codes: 2789 (Detection rough road), 278A
1988 Buick Electra Limited 3.8L Surge, Cuts out, Stall, Lack of power VIN: 1G4CW51C1J
Replaced fuel filter/ unplugged pressure regulator and drove/ inspected (1) spark plug (ok) unplugged maf and drove- no change in power// ran a tank of fuel through with injector cleaner & water inhibitor// symptoms did not change.. (( runs perfect with plenty...
1995 Buick Park Avenue 3.8L Stall VIN: 1G4CW52K4S
This car has me stumped. This 95 Park Avenue had a new motor put in at 141k miles and the customer had no issues with it until recently. It was origonally a 3800 Series I engine, and a Series II engine was installed in the car. As stated, the customer had no... Trouble codes: P0325 (Ign system problem Elec SPark Control ESC Failure), P0705 (PRNDL Switch Failure)
1995 Buick Park Avenue 3.8L No 2nd Or 3rd Gear VIN: 1G4CW52K6S
Transmission will not shift into 2nd or 3rd, even if shifted manually, but will eventually go into 4th (1st & rev solid). 7 fault codes logged in current codes, no history codes. P0101 (maf), p0501 (vss), p0703 (brk sw), p0705 (range sw), p0755 (solenoid b), p...
1998 Cadillac DeVille d'Elegance 4.6L Front end VIN: 1G6KE54Y0W
This vehicle will start to shudder or vibrate when under accel only. It begins at around 40-45 and feels more side to side then. At higher speeds, and under accel, it will shake the whole car. As soon as throttle is released, the vibration goes away. In the pa...
1998 Cadillac DeVille 4.6L Level Ride System VIN: 1G6KD54Y8W
Howdy everone! Last june I replaced the air shocks and compressor on this caddy, last month the owner called and said it was sagging to the ground overnight. I told him that the system shouldnt be able to go lower that the ride height so I needed to check it. ...
1999 Chevrolet S10 4.3L brake pedal VIN: 1GCDT19X8X
This vehicle is a co workers vehicle that we cannot seem to be able to duplicate the issues. For starters, about 4 months ago, the complaint was the ABS would kick in at random. Not like slow speed activation, because speed was not a factor. It would activate ...
2001 Chevrolet Silverado 3500 6.6L oil cooler? VIN: 1GCHK29151
I'm needing a duramax techs help on this one. This motor has a coolant leak at the left rear of the motor, mainly when the motor is cold I pressure tested the system but had to let the truck sit over night to develop a slow drip on the rear left of the motor, ...
2003 Chevrolet Tahoe Z71 5.3L Poor Idle Quality, MIL Lamp on VIN: 1GNEK13Z83
We have this vehicle in that a dealership diagnosed a faulty cat on this vehicle. We replaced the cat with oe, cleared codes and then it was running poorly. My tech replaced the b2s1 with an oe part. We are having a problem with b2 running lean. ltft is at 25,... Trouble codes: P0174 (Bank 2 sensor 1 lean), P0300
2005 Chevrolet Venture LS 3.4L MIL Lamp on VIN: 1GNDX33E05
hi, 2nd time this van came here for this code, p0131 o2 voltage low, can only get this to act up on roadtest if you are into the throttle 70% or above,check o2 wiring, fuel pressure good 50psi, replaced pluged fuel filter,tried new o2 sensor, going to try know... Trouble codes: P0131
2005 Chevrolet Silverado 2500 HD 6.0L Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1GCHC29U15
This vehicle was dropped in my lap. Customer stated that it "all of a sudden" started running rough. Went through the truck and found that the converters were plugged (5 psi of back pressure). Customer had cats replaced at local muffler shop, but they told him...
2006 Chevrolet Impala SS 5.3L No Start, Guages/ door locks VIN: 2G1WD58CX6
Sorry friends, this is going to be a long one! Original verified complaint was door locks locking & unlocking by themselves, and tranmission shifting rough while driving. I discovered that engine running in neutral, KOEO in neutral, or key in accesory position... Trouble codes: U0155 (History code only), B1000 (History code only), U0073 (u0001-), U0001 (testing and results)
2008 Chevrolet Cobalt LT 2.2L power steering/HVAC VIN: 1G1AL58F58
Car came in with the 10 amp hvac and ip ignition fuse in the center console blown, customer installed new 10 amp and it blew again, then the power steering failed and he brought me the car. I found the 20 amp fuse in the engine bay blown and replaced it, repla...
1999 Chrysler Sebring LX 2.5L Cooling Systems
Car won't suck anti-freeze back into engine from overflow tank. The overflow tank was completly full and engine 1 1/2 quarts low. I filled engine and sucked out 1/2 of the water in the overflow,ran car and then let it set for 4 hrs. and came back to see the sa...
1997 Dodge Intrepid 3.3L Excessive Emissions VIN: 2B3HD46T4V
Family friend, I do not have access to a 5 gas. Failed Calif. ASM. 15MPH-CO2 14.6% O2 0.1% HC 41 PPM CO .17% NOX 517 PPM. Failed NOX, barely passed HC. Isn't that Lambda .9991? 25 MPH-CO2 14.5% O2 0.1% HC 41 PPM CO .19% NOX 470 PPM. Failed HC, barely passed NO...
1998 Dodge Ram 3500 5.9L Cuts out, Stall VIN: 1B7MF3367W
This truck start and runs great except for a split second cut out on a cold restart. First start in the morning is always fine for me, though customer stated that it has died for him twice this winter when warming it up first thing in the morning. Other wise y...
1999 Dodge Ram 2500 5.9L No Start VIN: 1B7KF2366X
So we replace the injection pump with a new unit, truck ran great for a few days and quit again, removed new pump and had it tested and it tested good on the bench, so reinstalled the pump and truck fires right up and would idle great in the yard. We wiggle te... Trouble codes: P1689
2001 Dodge Ram 3500 Van 5.9L No Start VIN: 2B5WB5Z21K
ok guys got no spark, no injecter pulse, no asd grounding ,no com with scan tool ,and a no buss message on the cluster...have power[and the ability to flow current] at pcm pins a2[ign run start] and a22 [fused b pos].pcm grounds at pins a31 and a32 are good,ca...
2001 Dodge Ram 2500 5.9L Oil Pump VIN: 1B7KF23741
Got another good one. I've got a cummins diesel that got towed here three months ago with a howling noise from timing cover after something slid off his seat & gunned throttle for a second. He was smart enough to not let me hear it and insisted I pull timing c...
2006 Dodge Ram 1500 SLT 4.7L compressor
Have a dodge pickup here that the a/c compressor runs constantly.With the control panel on or off it runs.Never cycles and eventually freezes up. Even with the control panel unplugged the compressor runs. When I tried to actuate the compressor with the scan to...
1994 Ford Explorer XL 4.0L MIL Lamp on VIN: 1FMDU32X3R
Frustration has set in. Is there an easy removal technique for removing the CMP Synchronizer ??? It is the type with the window situated center/ rear of the engine block. Trouble codes: P0341 (CMP Signal noise 0 Tane Adjust Pin), P0214 (Cylinder I.D. CID circuit fault)
1997 Ford Taurus LX 3.0L Poor Idle Quality, Surge VIN: 1FALP53SXV
Hi everyone, I have this 97 ford taurus that is having idling/surging problems when the a/c is on. The car runs great until the a/c is turned on. When the a/c compressor cycles on, the idle will go up approx. 300 rpms more and slowly come back down to normal....
1998 Ford Ranger XL 4.0L Poor Fuel Economy, MIL Lamp on VIN: 1FTZR15XXW
Have a 98 ranger with 100% duty cycle at all times. Runs rich at all times. Trying to find out if an input is causing high duty cycle or if ECM is bad.
1999 Ford F-350 Super Duty XL 7.3L Excessive Emissions, Hesitation VIN: 1FTSW30F8X
This truck originally came for a poor running condition, and it smoked a lot. It had sat outside for about 2 days before service work. And it would start and stall. Installed camshaft sensor and got it up and running. The first thing I did was and oil change a... Trouble codes: P0278 (Cylinder 6 Contribution/Balance Fault), P0284 (Cylinder 8 Contribution/Balance Fault)
2000 Ford F-150 5.4L Unknown VIN: 1FTRX17L6Y
I have a 42-44 mph bounce in this truck on any road surface. It became much more noticable after replacing the tires (BFG Long Trails). I have done everything I can imagine to remedy it. I reinstalled the old tires on the same wheels and it was almost gone. I ...
2001 Ford F-250 Super Duty XLT 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX21L01
This vehicle was brought in running extremely bad.I found cyl.3 plug loose and the ground electrode burnt off,cyl.1 looks good except the ceramic on the firing electrode is rust red as are all the other plugs that I have so far removed.I've got a feeling there... Trouble codes: P0301, P0303
2005 Ford Escape Hybrid 2.3L ABS control VIN: 1FMCU95H15
This one is for Ford Hybrid techs. I need some help on this problem.The vechicle came in with C1327 Brake Fluid Level Low and the fluid level sensor was out of spec.I replaced fluid from the reservoir using fluid changer to see if it turn the light off,filled ...
1997 GMC Jimmy SLE 4.3L Compressor VIN: 1GKDT13W8V
Ok this problem child was drop off for the a/c not working I started with the basics a system charge found to be 8oz low and checked all fuses.Hooked up my scanner and the a/c request set to no.I can take 12 volts and manually make the compressor run.I checked...
1999 Honda Odyssey EX 3.5L battery VIN: 2HKRL1862X
I have a parasitic draw of .10 -.15 amp on this vehicle. I have figured out that it is something on the #13 fuse in the passengers side fuse box, i have disconnected everything on this vehicle & drain still there . Replaced drivers multiplex control unit & dra...
2008 Honda Pilot LX 3.5L Brakes VIN: 5FNYF185X8
Customer returned with same noise. More than one person could hear noise. Re-inspected and brakes look good. No hanging calipers, pads look good. Rotors not scored. Release vehicle. The next visit customer is still hearing a noise. Re-inspect and find brakes w...
2005 Infiniti QX56 5.6L Heater VIN: 5N3AA08C75
I have a new actuator in hand, the question is what must come off to get access to the old one?
2005 Infiniti FX35 3.5L No Start VIN: JNRAS08455
Hi everybody, i have this Infiniti FX35 that was towed to my workshop with no start condition. I tried to diagnose the Engine control Module no way i knew it was the problem, ordered a new one from USA and fixed it on the car, the car started fine and everythi... Trouble codes: P0725 (Engine Speed Input Circuit Malfunction)
1990 Jaguar XJS 5.3L No power VIN: SAJNW4847L
Trying to do my good deed and it's not cooperating,Engine is getting no spark to pass side bank. Nothing from coil,I switched wires from upper to lower coil and I then have spark.I do have power and ground at both coils but I am not geting a signal/flash at th...
2005 Jaguar S-Type 3.0L Air Temp VIN: SAJWAO1UX5
Help can seen to get the right info on this car. Can"t get cold air for drivers side vents i recharged a/c check all the door motors, that i could find with alldata info any help...thanks bob
2005 Land Rover LR3 SE 4.4L compressor VIN: SALAA25405
Good morning! I was hoping some of you land rover techs could shed a little light on this a/c system. This is a clutchless compressor system that seems to have the symptoms of a compressor going out or a blockage in the condensor. We haven't seen many of these...
1996 Mercedes-Benz SL600 6.0L oil pressure VIN: WDBFA76FXT
I have been tring to determan weather this v12 has any flaws in the oiling system that may cause oil pressure loss. When this vehicle came in the valve train was makeing alot of noise. On inspection of oil pressure it was found to be low, 35 psi cold. When war...
2001 Mercedes-Benz S430 4.3L Srs VIN: WDBNG70J81
SRS light on, Code B1871-Ignition Circuit 12 and resets as soon as vehicle is restarted. I accessed the archives of a 2001 CL500 for a B1867-Ign Circuit 8 code that I worked on last year & had recieved some specific info for that code, the drivers door airbag,...
2003 Mercury Sable GS 3.0L MIL Lamp on VIN: 1MEFM58U73
Customer brought car to us after he instaaled new cam sync. because of noise.Noise is gone but keeps setting code 1336 cam sync. missaligned.We brought it up on cyl 1 and using aftermarket alignment tool reinstall sync.to 38 degrees from center line of engine.... Trouble codes: 1336 (cmp sync. misalign)
1988 Nissan D21 2.4L Hesitation, Surge VIN: 1N6ND11S4J
Truck surges at 2000 RPMs, tested at the ECM with scope, MAF-TPS & TPS SW.-ECT- INJECTOR PATTERN- CRANK SENSOR- 02 SENSOR Disconnected EGR, disabled exh. coil same result. disabled int. coil same result, Ignition is not cutting out. Tried new cap and rotor sa...
1993 Oldsmobile 88 Royale LS 3.8L Battery VIN: 1G3HY53L3P
Hi everybody. We have a 1993 Oldsmobile 88 3.8L in that customer states that when the car is left alone for 3-4 days the battery is dead. I have my meter in series with the battery to see exactly what the draw is and it is 16-19mA. This does not seem excessive...
2010 Other GM H3 3700CC Transfercase VIN: ADMDN13E18
I have a problem with this vehicle, the "serv 4 wd" is appear in a combination meter, before the message appear, i try to pull out the junction blok on the left engine compartment, and i istalled again in a few minutes, but when i try to on the ignition, the j...
2003 Pontiac Vibe 1.8L Windows VIN: 5Y2SL62873
Have the strangest problem i'v seen in my 15 year career, have this vibe that will always surge or buck when you are at or above 60 mph and only when you roll a window down as soon as you roll the window up it quits immediately like you turned a switch off. Fr...
2004 Pontiac Bonneville SLE 3.8L MIL Lamp on VIN: 1G2HZ54143
Sets p0401 EGR flow on a drive cycle. enging is supercharged and tried a good EGR valve, MAP sensor and tried latest programing. Flow is good thru valve and can be controlled correctly by Tech 2. Positions look correct also. Strange Trouble codes: P0401
1997 Saab 900 SE 2.5L No Start VIN: YS3DF35N7V
Thank you for your help I just installed a fuel pump in this vehicle. The pump runs but I have no fuel flow. I removed the tank and pump again and could see nothing incorrect except that the well has no fuel in it. I had put about 6 gals of fuel in it after in...
2007 Saturn Vue Green Line 2.4L B.A.S. starter/generator VIN: 5GZCZ33ZX7
Towed in with a dead vehicle battery, only about 1 yr old so, we charged it up overnight. The battery tested good with flying colors. Re-installed it in vehicle and tested electrical system. The alternator failed. No problem (right?) Replaced it with a new oem...
1995 Subaru SVX LS 3.3L Poor Idle Quality VIN: JF1CX3355S
Hi Subaru techs, We have an SVX here that has an intermittent rough and surging idle problem that is much worse when a/c is on. It ocurrs warm or hot engine. I smoke checked intake system and found no leaks. I checked tps and found the following readings 485 ...
2007 Subaru Legacy 2.5i Limited 2.5L valves VIN: 4S3BL616X7
we used only subaru parts and after install cyl heads we have what sounds like valve tick on start up and continues . we have readjusted valves with engine cold with no diff . im wondering if problem is in variable cam timing like trapped air in oil passages .
1975 Volkswagen Beetle 1.6L Suspension VIN: 1152028450
This beetle has a very loud squeaking noise in the front suspension.It does not squeak when bouncing the suspension evenly-like bouncing the front end from the center of the bumper-only when rocking the front end side to side-I grab the open door and rock the ...
2001 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWRH63B11
smoke tested until smoke came out filter at leak detection pump (LDP). Pinched off line to filter and could not find any smoke. Switched to presure check and ball drops to zero leak and stays there even after 5 minutes. I removed LDP and ohm tested as stated i... Trouble codes: P0442
2001 Volkswagen Passat GLS 4 Motion 2.8L Engine VIN: WVWAH63B21
Vehicle was towed with a no start, upon inspection we found timing belt teeth all torn, timing belt did not brake but most of the teeth were gone, water pump pulley locked , and other tensioners not working,.continiue to check crankshaft ,crank rotates with no...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2010 Audi A 4 2.0L Oil Level VIN: WAUWFAFLOA
Dave hit the nail right on the head. The first problem I found was that I was attempting to reset the oil life/level system without the hood being open. Second, our ShopKey did not have the bulletin Dave mentioned so I got it from the shop next door using thei...
2001 BMW X5 4.4i 4.4L Rear self-levelling VIN: WBAFB33531
Gantlemen, I want to thank you all very much for your very helpful replies. Indeed, I wish I had Autologic, or a GT-1 as I had when at the dealership, so I could not only read the data, but reset when done. I have also spoken with several other long-time BM...
1999 Buick Park Avenue Ultra 3.8L Stall, MIL Lamp on VIN: 1G3456789X
Ok put a crank sensor in it for the dieing issue died 2 more times after the car was returned to the customer the first time. car hasnt been back as of yet. as for the rpm issue was talking to my buddy who is a gm tech and first words out of his mouth with o... Trouble codes: P0336.
1964 Chevrolet Corvair 2.7L wont rev over 1,500 VIN: 40667W2711
Took carburetor to a specialty rebuilder and they ordered rebuild kit and went through the carburetor. All seems ok now. There was quite a few things they found that needed repaired to bring it back to working order. As I said nothing was known about car, repa...
2004 Chrysler Town & Country Limited 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2C8GP64L34
While I have not completely repaired the vehicle, this is what I did find. I am closing this to preserve my IATN rating. I removed the L/B head yesterday to take a look at the cam & lifters. I pulled the plugs first & looked at the valves with a borescope & th... Trouble codes: P0306 (Misfire on cyl. 6).
2008 Chrysler Town & Country Limited 4.0L Hesitation VIN: 2A8HR44H78
Older Crankshaft Position Sensors were expensive, I assumed this one would be as well and didn't want to throw parts at it without being able to pinpoint concern. When I priced the sensor and found that it was under 10.00, we just replaced it. So far so good, ... Trouble codes: P0339 (Crankshaft Position Sensor Intermittent), P1128 (Closed Loop Fueling Not Achieved- Bank 1).
1998 Dodge Caravan ES 3.3L No Start, MIL Lamp on, ldp pump VIN: 2B4GP25R1W
i have replaced the pcm, body control module, and instrument cluster from another 97 caravan with cali emissions. it has now passed a NH state inspection and no longer has a check engine light. it seams the computer had aftermarket factory add on security. tha... Trouble codes: P1495.
2008 Dodge Caliber R/T 2.4L Lighting VIN: 1B3HB28B38
Thanks every one, specially Jeff & Gilbert lead me into driver side kick panel, found a screw from kick panel went thru harness, remove screw and taped up wires, works fine. Thanks, thanks every body.
1959 Fiat 600 .6L turn signals
Thanks everyone for the replies. I got the diagram I needed. It seems to have a intermittent issue as it started working again. This is a low priority car so I haven't torn into it yet. On a side note this is not your normal fiat, it is powered by a 1914cc vw ...
1995 Ford Ranger XLT 4.0L No Start VIN: 1FTCR14X0S
Ended up sending out he computer to a re-builder through the dealer Truck runs great thanks for the input.
1999 Ford Windstar SE 3.8L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 2FMZA5242B
ok guys i think this one is fixed,what i ending founding was that the idle control val was leaking real bad and i cleansd the mass air flow metter.the van ran great and no problems so far.thank all of ypu for the help. Trouble codes: P0171, P0174.
1999 Ford F-350 Super Duty Lariat 7.3L daytime running lights VIN: 1FTSX31F1X
Thanks to all of you guys that responded on this vehicle. I forgot to mention that on my first look at this vehicle i did disconnect the ignition switch and the problem still existed. I ended up replacing the under dash fuse box and the GEM module that is atta...
2002 Infiniti QX4 3.5L Mechanical VIN: JNRDR09X52
so after looking around some more we discovered we could advance the cam manually using compressed air while the car is running and read the timing from the computer. using this we found the b1 cam could advance to 14* fairly quickly but the b2 cam could only ...
2006 Infiniti G35 X 3.5L rear rotors VIN: JNKCV51F06
sorry took so [...] to get back. it turns out the problem was old grease built up behind the slides on the LR wheel not letting the slides release. removed alot of old grease from that side took out new grease from new caliper and installed very little on all s...
2005 Jeep Wrangler Rubicon 4.0L MIL Lamp on VIN: 1J4FA64SX5
1999 Mazda Miata 1.8L No Start, Poor Idle Quality, Stall VIN: JM1NB353XX
sent head to machine shop-found previous owner had terrible "valve job" and surface of head looked like it was done with a hand file. installed properly freshened head and did compression check-all cylinders improved dramatically however still had lots of vari...
2006 Mazda 3 i 2.0L Power Steering Pump VIN: JM1BK12F77
We were not able to fix this vehicle because we are thinking that it must have a programing issue that we were not able to address with our equipment. Thanks for the help.
2006 Mazda 3 i 2.0L solenoid A VIN: JM1BK32347
I replace the TCM with a used one and it fix it. The P0753 will set intermittently cold or hot the trany will hard shift from revers to drive for few seconds and it will not it again for a day or two. thank you.
1997 Nissan Maxima GLE 3.0L No Start VIN: JN1CA21D4V
2003 Suzuki XL-7 Touring 2.7L 4x4 inop VIN: JS3TX92VX3
Thank's to everyone who responded to my post. I checked the diaphram in the front diff by applying 5 PSI of pressure and it is working fine. my problem was that the PCM would not turn on the pump that applies pressure to the diaphram. I was able to run the pum...
2003 Volkswagen Beetle GLS 1.9L cooling system VIN: JT8VK13TXN
You all are very helpfull... Thankyou. The head gasket was leaking equally on all 4 cylinders to the water jackets under load. We felt out the rough torque setting on all head bolts before removal (to see that we hadn't missed one on installation)... all w...
1999 Volvo S80 2.9 2.9L No Start, Hesitation VIN: YV1T397D2X
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