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Automotive Technical Theory Forum

Professional automotive forum for discussion of the theory of operation for any automotive system or component. Discussions include electrical and electronic theory, engine propulsion theory, fuel system theory, ignition systems theory, and much more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Tips Forum.

Recent Automotive Discussions in the Automotive Technical Theory Forum

Wheel Weight Location
03/21/2018 in the Technical Theory Forum
I have worked on two different vehicles this week that had the following - one stick on weight behind the spoke, one clip on weight on the inside lip of the wheel (convential), and one stick on weight in the middle of the wheel! Is this a new technique?
Oiled Air Cleaners, Myth?
03/16/2018 in the Technical Theory Forum
I have heard it in countless seminars. Oiled air cleaners, such as K&N, will cause a false MAF reading. It makes sense, oil ends up on the MAF element and creates different heat transfer properties. I have heard from instructors to say so much as it will ...
ABS stop
03/14/2018 in the Technical Theory Forum
On the older ABS equipped vehicles it seems clear that attempting to initiate an abs stop before first reaching approx. 5mph is not possible by design. So, when navigating a very slippery downhill, instinct dictates (especially to new drivers) that going ...
Crank relearn
03/12/2018 in the Technical Theory Forum
I was just reminded of a curiosity of mine from a while ago, with the Vortec Chev engines needing to hit the fuel cutoff to reset the crank sensor. I just did a 12 3.7 Acura that used a similar process. The question is, what is the ecu looking for at fuel...
LPG modifications, combustion temps, engine damage
03/06/2018 in the Technical Theory Forum
[Engine: 15 Dodge Grand Caravan SE Plus 3.6L] I have very little experience with LPG (propane) vehicles but have seen 2 of these recently, the other being a 2017 model. This taxi fleet has almost 2 dozen of them, most are all using the LPG conversion. Th...

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