2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Jerking in and out of overrun

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Old Jun 18, 2025 | 12:00 PM
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From: Germany
Jerking in and out of overrun

Hello,

I'm out of ideas here. since I've got my FC Turbo2 Ive got jerking accelerating quick out of overrun and suddenly lifting off the throttle. The whole drivetrain and engine jerk back and forth. I get that on every gear and a clunk when shifting as soon as I disengage the clutch. Low rpm make it even worse especially under 1k rpm it's like riding a horse.

I've changed the 3 diff mounts, transmission mounts and engine mounts.

Happy for any suggestions!
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Old Jun 18, 2025 | 12:12 PM
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From: https://www2.mazda.com/en/100th/
First stop would be the throttle sensor adjustment?
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Old Jun 18, 2025 | 12:18 PM
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Gonna try that in a minute. What is the voltage supposed to be ?

Just checked. Got 1200 ohms closed and 6000 ohms on wot. Seems alright?

Last edited by Zefay; Jun 18, 2025 at 02:28 PM.
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