Automotive Technicians Technical Discussion and Fixes for May 20, 2020 - iATN (Members Only)

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Open Help Requests for All Makes and Models

	Help Request	Answers
	1972 Chevrolet C10 Pickup 5.7L Mechanical VIN: CCE142S101 This 1972 truck has a 90's Corvette engine with a new A/C compressor. The rest of the A/C system appears to be original design, except that the service fittings have been converted to R-134 style. It has an old evaporator, old POA valve, new R-12 style con...	View
	1982 Chevrolet Corvette Collector's Edition 5.7L Poor Idle Quality VIN: 1G1AY0788C My friend just bought this car. It runs pretty good except for a rolling idle. It had loose bolts at the exhaust manifold leaking. I tightened them up and the car was starting to run better. I hooked up a snap on mt2500 to get codes and live data (check en...	View
	2009 Dodge Avenger SE 2.4L No Start, MIL Lamp on VIN: 1B3LC46B79 Car came in in limp mode two weeks ago. I replaced the pedal position sensor and all was well. Customer called me yesterday and told me the car wouldn't start so we towed it in. I have codes but no check engine light on. The car cranks fine but doesn't ... Trouble codes: P0456 (EVAP System Small Leak), P0642 (Sensor Reference Voltage 1 Circuit Low), P2122 (Accelerator Pedal Position Sensor 1 Circuit Low)	View
	2008 Ford F-150 XLT 4.2L ABS Module VIN: 1FTRF12298 Trying to help a friend. His ABS light came on and he was told he needed wheel speed sensors. That did not fix his issue. Has codes C1300 pump motor circuit failure and C1296 Left front wheel speed sensor. Pump does not run when actuated with scanner. Conn...	View
	2008 Ford Expedition XLT 5.4L Vibration VIN: 1FMFU16538 this truck came in my shop saying that the blower moter not blowing. well i jumped the gun replacing the blower moter and the resitor. nope that did not fix the problem. so i traced the wiring down and found the relay to be under the hood in the center.i t...	View
	2012 Ford Mustang 3.7L Poor Idle Quality, Hesitation VIN: 1ZVBP8AM4C We find exhaust form tail pipes feels like lack of flow.We find code P0430, and temperature on right cat even before and after cat. The catalytic was partially plugged. After replacing right cat,road test is the same :lack of power on accelerating. The air...	View
	2013 Ford Fusion SE 1.6L Low power VIN: 3FA6P0HR0D Thanks in advance for the help. Originally this car came in overheated. The water pump had failed. The water pump and timing belt were replaced using OEM parts and the timing tools necessary. A few weeks later the purge valve was replaced because of an EVA...	View
	2014 Ford Escape SE 1.6L Surge VIN: 1FMCU0GX6E I'm lost on what to do next I have no codes seems to Surge a little under load I've clean throttle body turn it up replace the timing belt under the data readout it does say variable camshaft timing intake desired angle degree slightly out of range from ti...	View
	2013 GMC Yukon Denali 6.2L electrical VIN: 1GKS1EEF1D same as above,	View
	2000 Jeep Cherokee Limited 4.0L Misfire, spark plugs VIN: 1J4FF68S6Y Hello. Hoping to gain some insight on an unusual problem. I've just started into this one and need guidance. The plugs are heat damaged; the insulators are specifically. There is also a white crust on plugs, but gap is intact. Engine starts misfiring after...	View
	2004 Lexus GX470 4.7L Transponder module VIN: JTJBT20X94 This vehicle has a draw that is coming from the circuit for the transponder key control module (fuse ECU-B, under hood fuse box). The module appears to be in-between the dash frame and the dash, on the right hand side of the dash. I can't find repair info ...	View
	2013 Porsche Cayenne GTS 4.8L Manifold absolute pressure VIN: WP1AD2A25D Performed short test, found faults p1074 mass air flow partial load implausibly high and p0068 mass air flow implausible. Smoke tested engine, found crankcase vent valve slightly leaking. Measured crankcase pressure with a manometer, found between -70mbar ...	View
	2014 Ram 1500 Big Horn 5.7L Misfire VIN: 1C6RR7LT6E Hello tis truck came into the shop with a bad miss on number 5 cyl. We tore it down and found cam and lifter bad on that cyl. So we installed a new cam and all new lifters. Got truck put all back together and now it misfires on cyl 7 and 6. Wanted to get y... Trouble codes: P0300	View
	2010 Toyota Camry LE 2.5L Tsb 0041-13 VIN: 4T4BF3EK7A Refer to T-SB-0041-13 brief engine rattle/knock noise at cold startup: Completing TSB after intake gear installation, followed procedure with gear in unlocked position and torqued the gear nut to 63 ft.lbs. The procedure now says to put the gear in the loc...	View
	2013 Toyota Venza LE 2.7L Timing Chain VIN: 4T3BA3BB6D We had this Toyota towed in after it would not start. We quickly discovered the timing chain had broken. Removed valve cover and confirmed it. We pulled the plugs and inspected with an inspection camera and there is no valve damage. Confirmed that with a l...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2013 BMW 535i xDrive 3.0L No Start, Poor Idle Quality VIN: WBAFU7C57D Thanks for all the feed back. Though we thought that we were dealing with a fuel related issue we didn't find enough data to support replacment of fuel system components. The technician removed the valve cover and determined we had a faulty Camshaft Adjuster ... Trouble codes: 11800, 14001, 14000.	6
	2002 Chevrolet Silverado 2500 HD 6.6L Excessive Emissions, Cuts out VIN: 1GCHK23122 Well this one is fixed, Another set of injectors fixed it, We installed a set of Bosch injectors whom is the oem manufacture of these for GM, I guessed we learned a hard lesson on these Duramax engines, Sad to think that Standard would put out such a poor prod...	17
	2013 Hyundai Elantra GT GL 1.8L Battery VIN: KMHD35LE9D Hello, well the car is fixed!! Geoff [...] nailed it. It was the rear hatch open switch. When it should be a normally open switch, it had about 2 million ohms, apparently enough to keep the IPS (intelligent power switch module, internal to the SJB)awake. I...	12
	2011 Nissan Maxima S 3.5L No Start VIN: 1N4AA5AP1B first off thank all of you guys for taking the time out to help me, the fix was the power steering pressure switch was shorted to ground. when i disconeted it it ran great, car runs great, Trouble codes: P2138, P2138, P2138.	12
	2011 Porsche Cayenne Turbo 4.8L Unknown VIN: WP1AC292XB First: I know in this case the oil leaking by the solenoid located over automatic transmission is effect and not cause. Solenoid is not the problem but must be a reason why engine oil is flooding its vacuum circuit. But my technical high level of curiosity ma...	5

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