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Prev Professional Automotive Repair Technical Discussions for September 17, 2021
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Open Help Requests for All Makes and Models
Help Request Answers
2009 Audi Q7 TDI 3.0L Stall VIN: WA1CM74L49
Customer's vehicle stalled out and towed to his house. Customer scanned codes and from the codes he decided to change his exhaust out and get rid of the particulate filter. He also sent his computer to the same place and they programmed the computer to run... Trouble codes: P0272 (Fuel Injector 4 Contribution/Balance Fault), P0263 (Fuel Injector 1 Contribution/Balance Fault), P0269 (Fuel Injector 3 Contribution/Balance Fault), P0278 (Fuel Injector 6 Contribution/Balance Fault), P0266 (Fuel Injector 2 Contribution/Balance Fault), P0275 (Fuel Injector 5 Contribution/Balance Fault)
2008 BMW X5 3.0si 3.0L cooling fan VIN: 5UXFE43568
hi everyone thanks in advance for the help on this one, vehicle towed in to shop for overheating issue, replaced water pump,and thermostat from bmw,oe parts, found fan not coming on,fan works on a/c operation on low only,bled the system with a power bleede...
2014 Chevrolet Express 1500 5.3L Steering Angle Sensor VIN: 1GNSHBF44E
Service stability control message. Warning lamp on. Scanned data and signal plus or minus moves properly when wheels turned. Zero to -300 left. Sweeps to +300 right. Slight glitch on left turn. Connector looks good.tsb says add tape to connector. Connector...
2015 Chevrolet Silverado 3500 HD WT 6.0L fuel pump and lighting VIN: 1GB3KYCG4F
Truck was towed in for no start, fuse box melted when towed in. Found fuel pump relay and fuse area location of where the melting started. Replace under hood fuse box, fuel pump. Fuel pump connector, body control module and rear junction box. Now... when t...
2011 Ford Crown Victoria Police Interceptor 4.6L No Start VIN: 2FABP7BV1B
i got a used computer and installed it and still had no comm. noticed evap solenoid and throttle body were clicking. so i unplug evap solenoid no change and then i unpluged throttle body and clicking stop and i have communications now with both computers. ...
2013 Ford F-150 FX4 5.0L Unknown VIN: 1FTFW1EF9D
A year ago, this truck came in with the left front caliper apparently sticking because the outside pad was worn down to metal to metal, while the Left inside pad had about 50% of the lining remaining. Both front calipers had been previously replaced at som...
2015 Ford F-550 Super Duty XL 6.8L Surge VIN: 1FDUF4GY5F
This is a long story. The customer claims the problem came after the truck lost power and shut off due to a plugged cat. Another shop replaced the cat with a small after market one. It now has a surge under acceleration. The other shop replaced the fuel pu... Trouble codes: P0420, P219A, P219B
2009 Honda Accord EX 2.4L Vsa VIN: 1HGCP26849
Clean maintained Accord with VSA light on 25-11 code for steering angle sensor. The owner wants to blame the recent breathalyzer device recently installed. the device has one wire from the ignitions switch interrupted, 2 power wires rigged under the leg of...
2011 Jeep Wrangler Unlimited Sahara 3.8L Mechanical VIN: 1J4BA5H12B
This engine Dropped the bottom end and Damaged the Block. Has any one tried to get a 3.8L out of a Grand Caravan to work. Thanks for any help
2014 Mazda 3 i Grand Touring 2.0L Poor Idle Quality VIN: JM1BM1M73E
Hello everyone, this car came in for regular oil change. Air filter was dirty and my Tech recommended a EFI cleaning which we did. When the customer left he felt a rough idle and he brought it back, we reset the code P0300, P0301. He drove it couple of day... Trouble codes: P0300 (p0301-), P0301
2013 Toyota Prius 1.8L Unknown VIN: JTDKN3DU1D
Vehicle came in for smog repairs... Smog repairs was done and a long drive cycle was perform..and passed smog. Vehicle appears to be overheating driving over steep mountains only and while monitoring coolant , temp was at 205f.. pull over due to temperatur...
1979 Volkswagen Beetle 1.6L Surge VIN: 1592012136
This fuel injected beetle runs great at idle and heavy acceleration but surges/cuts out under light to medium load. Checked the EGR valve which I can see open and close when vacuum is applied. Verified vacuum to valve. Checked fuel quality which is good. V...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2008 Audi A4 Quattro 3.2L engine VIN: WAUEH78E38
Big thank you to Nicolas and John! It was the "PCV" valve, also called the "oil separator" under the intake, leaking coolant into the oil. When I removed the 3/4 inch breather tube on the back of the intake there was a small trace of coolant in the hose.The br...
1991 Chevrolet C2500 Cheyenne 7.4L MIL Lamp on VIN: 2GCGC29N3M
I retraced all my steps and had the same conclusion, got a used pcm with a prom chip and now everything works as it should, i also tried my prom in the used computer and the symptoms were the same so the prom was the issue thanks to all whom sent me replies
2008 Chevrolet Tahoe Hybrid 6.0L engine VIN: 1GNFK13578
Basically, get rid of vehicle due to part availability and cost. Customer had vehicle taken back to dealer where he purchased it, They worked with him on getting something else to drive.
2009 Ford Mustang 4.0L Remote VIN: 1ZVHT84N99
I originally opened this request because I was not able to program the remotes. The tech at the Ford dealer resolved this by showing how to program the remotes as stated in my update. So this is a fix for this issue. (However, the remotes again stopped working...
2012 Ford Expedition Limited 5.4L excessive pinging VIN: 1FMJU2A59C
Well I'm going to have to close this post without it being fixed. The customer replaced the MAF sensor and it ran a lot better and he also replaced the front O2 sensors. He was going to have the cylinders decarboned. After all the parts he put in, the engine p...
2016 Ford F-150 XL 3.5L No Start VIN: 1FTMF1C80G
Ok guys thanks for all the help it turns out to be connector c139 I was going to cut the power wire that fids the power to the injectors and when I was going to push the lock for the connector it came loose easy so I plugged it back on and the truck started ri...
2002 Nissan Xterra SE 3.3L Thermo Contol Amplifier VIN: 5N1ED28T72
Thanks for the help and the replies. The part on eBay was a Santech part# MT1637. It is a little different than the OE but works fine. Hopefully more of these will be made in the future so we don?t have to rig anything.
1989 Toyota Pickup SR5 3.0L Mechanical VIN: JT4VN13GXK
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