Automotive Technicians Technical Discussion and Fixes for Jul 2, 2020 - iATN (Members Only)

×

Join Now

Prev	Professional Automotive Repair Technical Discussions for July 2, 2020 International Automotive Technicians' Network (iATN) - Members Only	Next
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for All Makes and Models

	Help Request	Answers
	2011 Audi Q5 Premium Plus 3.2L Cylinder 3 VIN: WA1DKAFP2B I hesitated to ask for help on this one because I'm afraid I already know the answer. Was hoping someone has seen this before and can confirm my suspicion. This car we have been working on for a while and has always had a mysterious misfire but, only reall...	View
	1999 Chevrolet Silverado 1500 5.3L Misfire, Poor Fuel Economy, long term is 20 VIN: 2GCEK19T8X Last year this truck came in running horribly. We removed a bunch of add on garbage elec accessories that the previous owner had installed. We later replaced the computer and that fixed the similar problem until recently, when it got really hot out. Custom... Trouble codes: P0302	View
	2012 Chevrolet Equinox LT 2.4L Surge vehicle came in with surge at hot idle. replaced o2 sensor 1, with a factory part (it had an after mkt part) when vehicle is surging my short term fuel trim is -2 and long term fuel trim is 0. mass air flow is 4.3 g/s. fuel rail pressure sensor 1300 psi. d... Trouble codes: P0089, P0089, P0089	View
	2013 Chevrolet Silverado 1500 LS 4.8L Lack of power VIN: 3GCPKREA4D Hello techs, really could use your help here, this one has been beating me up for a couple weeks off and on now. I have a Silverado that lacks power on take off, after about 15-20mph it seems to run pretty good with acceptable power. On initial test drive ...	View
	2013 Chevrolet Silverado 1500 LS 4.8L Lack of power VIN: 3GCPKREA4D This is a continuation of a former post in which I closed because I was unable to update it again. The problem I am having is the vehicle lacks power on take off, but seems to run okay after 15-20mph. What I have noticed is brake torqueing the vehicle (WOT...	View
	2016 Chevrolet Express 3500 6.0L Low Power VIN: 1GB3GRCG8G Occasionally it has no power. It runs great when problem isn't present. All data looks normal except the timing. Ignition timing is being retarded when it looses power - goes down to negative -5 to -15 while accelerating. Unplugged both knock sensors and d...	View
	2001 Chrysler Town & Country Limited 3.8L goes into limp mode VIN: 2C8GT64L01 Transmission goes into limp only after vehicle is good and warmed up. Sets Code P1739 TCM initialized while vehicle is moving. Diagnostic tree basically says check wiring to TCM. I cleaned and voltage dropped the ground under the battery, and the computer ...	View
	2010 Dodge Grand Caravan SXT 3.8L Transmission VIN: 2D4RN5D16A One for you MOPAR Gurus. I actually have 2 of these Dodge Grand Caravans doing the same thing. They've had transmission replaced with used units. One of then has had the transmission replaced 3 times. Both are taking off in 3rd gear, not shifting and not s...	View
	2010 Ford F-150 STX 4.6L Emmision rediness VIN: 1FTMF1CW4A This truck came in for a N.C. state emission test and the required readiness monitors for the o2 heater and o2 sensors have not ran. I monitored data on my scan tool and all data looked good. I then proceeded to look at Mode06 data for the O2 sensors and t...	View
	1991 Mercedes-Benz 300SL 3.0L Soft Top VIN: WDBFA61E0M After replacing the top cylinders the top did operate a few times. Now the top will not operate at all. The roll bar will not operate either. The roll bar switch is dimly lit. The soft top switch will not do anything. Just prior to the top not working the ...	View
	2007 Mercedes-Benz ML350 4Matic 3.5L drivers window controls VIN: 4JGBB86E57 Customer complained driver's door lock inop. We replaced the latch assembly, but it didn't work at first. So we called the local mobile programming guy, and he read the info off the old latch, programmed the new one, and it works fine. Now, however, the dr...	View
	2008 Porsche Cayman S 3.4L Left Cam Cover VIN: WP0AB29888 Need torque spec for the left cam Cover.	View
	2002 Toyota Tacoma Pre Runner 3.4L MIL Lamp on VIN: 5TEGN92N02 Vehilce came in with p0440, found vent tube at filler dangling, reattached tube cleared codes. Vehicle returned a week later with p0440. Smoke tested filler neck leaking smoke. Replaced filler neck and still smokes from filler neck. Should we be pinching s... Trouble codes: P0440 (Evap leak)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1995 Chevrolet C1500 Cheyenne 5.7L power assist VIN: 1GCEC19KXS Thank you all for your help. As some of you wondered - No hydroboost. Thank you Al [...] for the idea that wide tires or offset rims could be the culprit. Though tires are stock, it does have offset rims. This would cause scrubbing at a dead stop that the PS ...	16
	2000 Dodge Ram 2500 5.9L No Upshift From First VIN: 3B7KF2369Y GOT HER DONE!! I BROUGHT TRUCK TO LOCAL DODGE DEALERSHIP AND THEY PLUGGED IN THEIR SCANNER AND FOUND THAT THE OOTPUT SPEED SENSOR ON TRANS WAS BAD... I REPLACED SENSOR AND TRUCK SEEMS TO SHIFT JUST FINE NOW. KINDA WEIRD CUSTOMER HAD BOTH THESE SENSORS BAD A...	10
	2011 Ford F-150 XL 5.0L Noise VIN: 1FTFW1EF4B Extensive research revealed many different views and scenarios. My ultimate conclusion is that there is excessive clearance in the cam journals and it is starving all of the lifters on the right bank at idle. We changed the oil up to 5w30 and then 5w40 and no...	13
	2014 Ford Explorer Sport 3.5L Shift points VIN: 1FM5K8GT9E We performed a clear and relearn of adaptive shift strategy with our Snap on Verus and it resolved the problem. Our customer never had this problem and wanted fluid serviced as a routine maintenance, the old fluid was still in good condition. Customer reporte...	6
	2011 Ram 1500 Laramie 5.7L engine VIN: 1D7RV1CT9B Well after several test we concluded that there was a timing or a cam issue . The engine was taken apart back down to the cam . The cam was correct timing was correct . We then inspected the lifters and discovered the cup for push rod was collapsed into the li...	16
	2015 Ram 2500 SLT 6.7L Unknown VIN: 3C6UR5JL6F This one is fixed!! The PCM may have been the original problem, however, the transmission they installed had issues. We had the old transmission rebuilt and now all is well. Now they get to return their $3000 used transmission and pay $3200 for the rebuild p...	4
	2016 Ram ProMaster City 2.4L P/S fluid level VIN: ZFBERFAT1G As most of you suggested, we un-clamped both bellows to check for fluid and found zero sign of any present. I think Charles [...] had the right idea as it fits our scenario to the tee! This particular fluid is a very weird consistency and it makes sense that...	6
	2004 Volkswagen Passat GLS 1.8L Compressor will not engage VIN: WVWPD63B64 CONCLUSION This one was fixed, looks like it was the relay. Doesn?t make sense. We were able to get a new relay, installed new relay. No change. Re-checked MVB-55 in the ECM to see if there was a climate control fault. Thinking it may show if there?s a signal ...	13

(Also Available: All, Asian, Chrysler, European, Ford, GM.)