Bouncing Revs Upon Start Up
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Junior Member
Joined: Jun 2020
Posts: 38
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From: Ontario
Bouncing Revs Upon Start Up
Recently I started my FD and the second the car turns on, it revs to 2000 rpms and starts bouncing from 1000-2000 consistently. My car used to idle perfectly fine before but now the revs keep bouncing as long as the car is on. Sounds like I am purposely revving the engine. I checked the voltage on the TPS and everything is good. Can anyone give input? Thanks
Last edited by Jus; Aug 19, 2020 at 04:05 AM.
Joined: Mar 2001
Posts: 31,835
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From: https://www2.mazda.com/en/100th/
the bounce is the ecu trying to get the actual speed closer to the target speed, mine does this too, but only in a small temp range. first stop is to set the base idle speed, after that the Thermowax is adjustable.
Thread Starter
Junior Member
Joined: Jun 2020
Posts: 38
Likes: 1
From: Ontario
Do this happen out of no where because my idle was good before?
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