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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 16, 2023
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Open Help Requests for All Makes and Models
Help Request Answers
2009 Audi A4 Quattro 2.0L Fuel Trims VIN: WAUSF78K29
After replacement of the rear main seal the engine runs much better. The fuel trim settled around 24 percent positive long term. Short term near 0. Check engine light has not come back on but the alternator is bad so hard to do a long test drive. I had it ...
2015 Ford F-350 Super Duty XLT 6.2L Cuts out VIN: 1FT8W3B69F
I replaced throttle body and still had problem. Performed test DV got to DV15 and TP2 has 4.9 volts on circuit. I removed TP2 form PCM and circuit has 0 volts. PCM is sending 5 volts down TP2. At PCM TP2 has a 5 volt reference line Removed that pin to chec... Trouble codes: P2112 (TAC system stuck closed)
2006 Honda Civic LX 1.8L Mechanical VIN: 1HGFA16506
About a year ago we replace the condenser do to leakage. She brought the vehicle yesterday and said it was not cooling. She said it work great all summer(last year). Checked for leaks on all components as we used dye when the condenser was replaced. No lea...
2008 Infiniti G35 Sport 3.5L Cooling Fans VIN: JNKBV61E28
Hello everyone! Hoping someone will have an answer for us. We service 2 different Infiniti M35's. Both of them have the same issue if it is actually an issue. When either of the two vehicles is key on engine off the cooling fans come on. They start out on ...
2007 Jeep Grand Cherokee Limited 3.0L MIL Lamp on VIN: 1J8HR58M87
Good afternoon, This truck was brought in with a code p0299- underboost. Customer had us replace the turbo with a Garret unit. Took for test drive and code came back and went into limp mode. Our tech smoked the intake system and all tubes were sealed. We w... Trouble codes: P0299
2003 Volvo C70 2.3L radiator fan VIN: YV1NC62D23
customer complains battery keeps dying and fan keeps running. after new relay and a temp sensor connector repair fans turn off after random time intervals. mass air sensor code present

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2016 Ford F-250 Super Duty XLT 6.2L noise VIN: 1FT8W3B69G
The noise was coming from the timing chain. I replaced chain, guides, and tensioners and all is well. Thanks.
2021 Mercedes-Benz GLB250 4Matic 2.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on, Hard Misfire cyl #3 VIN: W1N4N4HB2M
Joseph [...] indicated that there is a specific TSB for this condition. The bulletin say to perform a leak down test which I didn't initially do as that cylinder passed my compression test. So the lesson leared this time is: A compression test i... Trouble codes: 00303, 85 (Misfire detected cyl 3), P219E, 77 (Irregular mixture formation cyl 3. The commanded position cant be reached), P050A, 94 (Idle speed control malfunction during cold start. There is an unecpected instruction).
2011 Subaru Outback 2.5i 2.5L Vibration VIN: 4S4BRCCC3B
So I jacked up the engine with car on the floor and noise/vibration went away. After checking all mounts I found loose bolts between the aluminum bracket that mounts to the bottom of the engine mount to the frame. This was on the right engine mount. Tightened ...
2003 Toyota Camry SE 2.4L MIL Lamp on, When car off VIN: 4T1BE32K43
Thank you for helping me see what was right in front of my face. The new "Venmo" brake light switch was backfeeding and causing the check engine light to remain on when the car was off. I have not seen such an issue so thank you for pointing it out to me. I ha...
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