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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

Amperage Drop
10/09/2019 in the Technical Theory Forum
After many years of being exposed to the concept of voltage drop testing I was wondering if amperage drop testing was possible as well.So today I armed myself with my trusty old low amp clamp and decided to perform some tests on a positive battery cable.T...
Toyota Hybrid Engine Flare
10/04/2019 in the Technical Theory Forum
Occasionally, Toyota hybrids have a kind of engine flaring episode. Where the ICE is running and when you release the accelerator pedal, the engine will flare for a second, or so, and then settle. If you accelerate again, and then release the throttle, it...
electromagnetic clutch on rear diff
10/01/2019 in the Technical Theory Forum
[Miscellaneous: 14 Nissan Pathfinder SL 3.5L] clunking on turns in auto mode.[sounds like 4 whl dr hop on dry roads] how does this system work ? and how to test it? have seen this set up on pontic vibe. Thanks Mark.
1940 Chevrolet Generator
09/30/2019 in the Technical Theory Forum
I've got a local fellow who likes to buy, tinker, and sell old vehicles. He's brought me some interesting firsts for me. A 50's Renault, a 60's Corvair. Started wrenching in 2003, so I have 0 experience with these old cars, but I love learning. His newest...
Bad gas, and its adverse affects to data
09/13/2019 in the Technical Theory Forum
[Driveability: 06 Ford Five Hundred Limited 3.0L] I should start off with saying this is a confirmed fix, but allow me to give you our history of this vehicle. Type: 2006 Ford Fivehundred 3.0 gas, not E85. Grandma comes in on the hook that saying her alt...

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