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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 10, 2017
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Open Help Requests for All Makes and Models
Help Request Answers
2008 Audi A4 Quattro 2.0L Unknown VIN: WAUDF78E78
This vehicle is in like new condition. The transmission was sent out to be rebuilt by the factory ZF distributor Eriksson Ind. in CN. The transmission had a broken B2 return spring that caused hard shifting. The transmission shifts well but we have a vibration...
2005 Cadillac STS 4.6L , VIN: 1G6DC67A05
this vehicle came in for a brake problem of the front rotors and brake pads worn down to 70%, one of my mechanic sold them a complete brake job with rotors, two days later this car came back with the customer stating the brakes are sticking after test driving ...
2000 Chevrolet K3500 7.4L MIL Lamp on VIN: 1GCHK33J1Y
Customer brought vehicle in to have the check engine light looked at and have the broken exhaust manifold bolts repaired. p0401 was stored as well as an egr position code and throttle position sensor code. Found that the EGR valve was inoperable and the tps ha... Trouble codes: P0401
2005 Chevrolet Tahoe LS 5.3L MIL Lamp on, No Fuel Cut At WOT VIN: 1GNEC13T35
Thank you in advance for any advise. I have this Tahoe that we replaced the PCM for an unrelated matter. Installed and programmed the reconditioned AC Delco unit with a TECH 2 through TIS2WEB. Everything went fine until I tried to do the CKP relearn. The com... Trouble codes: P0315 (CKP relearn not achieved)
2005 Chevrolet Suburban 1500 LT 5.3L Poor Idle Quality, Hesitation, Surge VIN: 1GNEC16Z75
Good afternoon fellow technicians, I've been sort of unclear on why a customer's vehicle has a slight hiccup/misfire/hesitation when it is on deceleration and it's happening more and more as of late (we thought wires could be the culprit and so we replaced th...
2007 Chevrolet Tahoe LTZ 5.3L Throttle VIN: 1GNFC13J87
Tahoe is throwing P2176 "Minimum Throttle Position not learned". Vehicle is then thrown into limp mode w/MIL present and Traction Control/Stabilitrak system turned off. Customer states that it only happens on a cold start up, but not on every cold start up. Af...
1990 Dodge W250 5.9L Surge, Cuts out VIN: 1B7JM26Z7L
This vehicle surges about 2500 to 3000 and if you punch it hard it will cut out totally and back fire. This will happen whether it is going down the road or if it is in the stall. Upon watching the injectors through the throttle body we can watch them cut off ...
2012 Dodge Grand Caravan SE 3.6L Mechanical VIN: 2C4RDGBG9C
hello ! i have this van came in with noise from valve lifter ! the labor from pro man give us only 6.8 hours the job is included remove cam shaft ! i look at the timing chain job they give us 9.8 hours ??? the valve lifter job pay less when we have to remove 4...
1998 Ford F-150 XL 4.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 2FTZF1723W
Vehicle runs rich, blows black smoke, b1s1 and b2s1 o2 sensors go up to 800-950mv when closed loop, fuel trim -20, b1 + b2 o2 sensors won't switch so it goes into OFL loop and stops the fuel trim control. The downstream o2 sensors read rich also 600-700mv. I i... Trouble codes: P1132 (o2 reads rich b1s1), P1152 (02 reads rich b2s1)
2004 Ford F-350 Super Duty Harley-Davidson Edition 6.0L Cuts out VIN: 1FTSW31P84
I have a 2004 Ford F-250 6.0 Late build. The codes are P0336 and P0341. Vehicle idles perfect and issue does not occur until it is warmed up and then will start cutting cylinders. Vehicle never stalls and reducing rpm problem disappears. Problem only occur... Trouble codes: P0336, P0341
2010 Ford Fusion SE 2.5L low vacuum VIN: 3FAHP0HA6A
I do not know if it affects a motor used for manual transmission when putting a car with automatic transmission. the engine that got the owner is used for manual transmission. Look for the waveform of this car here in the forum but did not find anything. tak...
1990 GMC Safari 4.3L No Start, Misfire, backfires VIN: 1GTCM15Z1L
other tech got this car with a no start was able to limp car into shop. he sold plugs, wires, cap, rotor, and distributor...he has a parts cannon locked and loaded. replaced everything and is still the same but now I got stuck with it. both injectors are flowi...
2011 GMC Terrain SLT 2.4L MIL Lamp on VIN: 2CTFLXEC6B
this vehicle is driving me nuts. came in with a p0171 code. long term fuel trims at +35-40 all the time. no vacuum leaks found. pcv works correctly. low side fuel pressure measured correctly and high side pressure shows good on scan data. found a cracked exhau... Trouble codes: P0171
2015 Honda Civic LX 1.8L Compressor VIN: 19XFB2F54F
Ever since the accident the ac has not worked. The ac temp sensor on the scanner is reading 419 degress, when you turn on the ac the scanner does not show that it is switched on. I can power up the clutch relay with the scanner and it works just fine. System i...
2010 Hyundai Genesis Coupe 3.8 Track 3.8L No Start VIN: KMHHU6KH7A
this customer has had an occasional no start that is extremely intermittent (50 -100 miles 4-5 days between occurrence)if she lets it sit for 1 to two hours or by the time it gets towed here it restarts and runs perfect. there are no codes when it starts it is...
1991 Mazda Miata 1.6L Timing VIN: JM1NA3518M
Having a problem with setting the timing on this Miata. It's a DIS system with the optical sensor on the back of the intake cam. We just did a head gasket on it, and can only get it to run by turning the optical sensor beyond it's limits. Sadly, the person tha...
2010 Mercedes-Benz C300 4Matic Luxury 3.0L starter VIN: WDDGF8BB8A
vehicle came in with no crank, and steering was locked. message center would always say "please remove key" We thought it was a security issue so we sent to dealer. They replaced the steering lock. Now vehicle has full power to everything, but will not crank w...
1998 Nissan Frontier 2.4L shifter VIN: 1N6DD21S4W
Vehicle will move, even in gear. Feels like 3rd or 4th. Shifter will move back and forth, but whenever the clutch pedal is let out it will try to go, even in Neutral. Any ideas about repairing this unit? There really isn't a trans top to remove.Looks like the ...
1999 Nissan Pathfinder LE 3.3L Misfire VIN: JN8AR05Y4X
Thanks in advance. Have missfires on cyl's 2 & 3, while testing found no injector drive on thouse 2 cyl's. Load tested the ground wire all way back to ecm it's ok. No signal from ecm. Ok my question... Is the cmp able to control each lung or is that contol dec... Trouble codes: P0340, P0300
2008 Nissan Armada LE 5.6L No Start VIN: 5N1AA08CX8
Intermittent no start. Always cranks. When symptom occurs, no injector pulse or spark. CMPs have been replaced. Verified battery positive at ignition coils, MAF, and CMPs when not starting. Swapped ECM relay in IPDM with Fog light relay, no change. Wigg... Trouble codes: P0340 (CMP Bank 1)
2008 Saturn Aura XR 3.6L Air Bag System VIN: 1G8ZV57718
Ran through diagnostic chart, resistance on harness to side impact sensor is below 1ohm. Replaced side impact sensor new GM part and light set again, chart then says to replace SDM module, replaced with rebuilt module. No change light still on. Only thing I no...
2005 Toyota 4Runner Limited 4.7L No Start, no com engine/trans VIN: JTEBT17R75
This one has been keeping me busy this week. Have no communication with the engine/trans computer, all other modules are fine. ECM controls starter on this car, removing the crank relay and activating starter, car cranks but still no start. Checked resistance ... Trouble codes: U0126
2005 Toyota Prius 1.5L IGCT relay VIN: JTDKB20U85
Hello everyone and thanks for the help on this one. I have this high mileaged 2005 Prius in that intermittently won't start and go per the customers statement. I have not duplicated this but have found a code P2300 (actuator system malfunction) and P2318 (low ...
2008 Volkswagen Eos lux 2.0L windows VIN: WVWFA71F98
After clearing the DTC's the windows are working normally, I heard a click prior to the DTC's being erased when the windows were operated - either driver's side or passengers side; now the windows are working just fine. Looked through TSB's and there wasn't a...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2002 Audi A4 1.8L Interior VIN: WAULC68E72
On further investigation...while digging into the main wiring harness, I ran into the A121/A122 can crimp connection. (never did find A146/A147) Found heavy corrosion inside the "condoms" for the crimp connections so figured this was my "aha" moment. Nope...no...
2003 Chevrolet Trailblazer LTZ 4.2L Valve cover VIN: 1GNDS13S23
No short cuts- remove the alternator and get with it. It wasn't a bad job, just looked like there could an easier way, but after following the suggestions it worked out.
2003 Chevrolet Impala 3.4L MIL Lamp on VIN: 2G1WF52E33
Thanks for the replies. After spending plenty of time checking power, grounds and wiring continuity between the cluster, the BCM and the PCM, I called two places that repair the clusters and verified what I thought I knew: the cluster is at the end of the comm... Trouble codes: P1626 (Anti-theft fuel enable), U1064 (Loss of comm to BCM VITDIM /or SBM data).
2004 Chevrolet Trailblazer LS 4.2L Resivior VIN: 1GNES16S24
this vehicle is fixed we found out that the return line ha collapsed inturnally
2011 Chevrolet Traverse LT 3.6L radio and amp VIN: 1GNKVGED3B
We ultimately had to replace the radio unit and problem has been resolved. Thanks for all your help.
1999 Dodge Ram 2500 5.9L High Idle 1200RPM VIN: 1B7KF2369X
Adjusted TPS, But could not get check engine light to go off. So since the truck was running fine, i let owner take it for a few weeks and the light shut off on its own. He brought truck back in and ran a scanner on it and no faults found.
2008 Ford Fusion SE 2.3L Surge VIN: 3FAHP07Z08
this one is fixed the lower crank timing pulley was off by one notch, once i got it in timing the car ran perfect
2009 Ford Fusion SE 2.3L no 4th gear VIN: 3FAHP07Z29
thanks for all suggestions, load tested harness with light bulb - harness tested good. all that was left was computer. replaced it & fixed car. very confusing, that I could cycle SSA with scan tool.
2013 Ford E-250 4.6L Cooling system VIN: 1FTNE2EW0D
We put fresh solvent in the cooling system and ran it until warm. Boy, this helped greatly! All of the thick goo was really thinned down in one solvent treatment. There was still a mess to deal with, but not nearly as thick.Used dishwashing liquid several time...
1996 GMC Sonoma SL 2.2L Temperature actuator VIN: 1GTCS1441T
Actuator is behind glovebox topside under dash. As others replied dash has to be tilted back. The more you remove it the easier it is. The actuator is held in my ( 2 ) 5.5mm screws. Can't access screws without some patience. Took apart actuator and gear was br...
1994 Jaguar XJS 4.0L MIL Lamp on VIN: SAJNX2743R
Thanks For The Help The Customer Decided To Just Disconnect The Battery And Take It In For The SMOG Test
1962 Oldsmobile Starfire 6.5L power windows VIN: D209115664
Thanks for all of the replies. I was hesitant to remove the carpeting because it was custom Cheech and Chong vintage shag carpet that was glued down to the floor and kick panel, even way up the firewall beyond where factory carpet would go. After carefully pee...
2005 Subaru Outback i 2.5L MIL Lamp on VIN: 4S4BP61C45
went back and rechecked the wiring at the plugs what wonderful Subaru did for me was the wires in the o2 sensor connectors were installed on the wrong side. I showed the dealer they agreed ordered a new harness but this will fix the problem wonderful feeling ... Trouble codes: 31 (low voltage bank 1 sensor 1), 51 (low voltage bank 2 sensor 1).
2007 Toyota Prius Touring 1.5L Red triangle light VIN: JTDKB20U67
Hello everyone and thanks for the help with this one. The red triangle is the master warning light. We disassembled the rear of the vehicle to gain access to the hybrid battery and inspect the cooling fan. We learned that a dealer had put in a new hybrid ba...
2009 Volkswagen Jetta SE 2.5L Steering Rack VIN: 3VWRZ71K79
What I found.. First I had to perform an ABS test.. Drive stop then turn 90-180 deg .. SO I just went into a circle then turned the other way .. After I did this the ABS light went off.. Next I did the did calibrated the Steering Angle Sensor procedure, adapt...
2005 Volvo S40 T5 2.5L MIL Lamp on VIN: YV1MS682X5
Looks like the Throttle body codes came back this time along with the misfire codes. We replaced the throttle body module as per the customers request. No programing was required!! The car left about two weeks ago and have not heard back from him yet. (In t... Trouble codes: 3110 (Cyl1 Misfire), 3120 (Cyl 2 Misfire), 3130 (Cyl 3 Misfire), 3140 (Cyl 4 Misfire), 3150 (Cyl 5 Misfire).
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