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Idle dropping to 600 rpms

Posted: Sun Dec 12, 2021 5:52 am
by Endeavour1200
As the title suggests. Cold engine idles at ~1500rpm and then it settles down to 600-500rpm, has almost stalled on me a couple of times.

Any help is appreciated.

Re: Idle dropping to 600 rpms

Posted: Sun Dec 12, 2021 6:13 am
by Abdullah
The usual suspects are sparkplugs, throttle body and MAF sensor. Have you inspected them and cleaned them?

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Re: Idle dropping to 600 rpms

Posted: Thu Dec 30, 2021 2:08 pm
by Endeavour1200
It has started to stall out now, does not idle. Need to press throttle to keep the engine running.

Re: Idle dropping to 600 rpms

Posted: Thu Dec 30, 2021 2:09 pm
by Endeavour1200
Abdullah wrote: Sun Dec 12, 2021 6:13 am The usual suspects are sparkplugs, throttle body and MAF sensor. Have you inspected them and cleaned them?

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Yes, I'm gonna take a look at the throttle body and maf sensor.

Re: Idle dropping to 600 rpms

Posted: Thu Dec 30, 2021 6:56 pm
by KuroNekko
Endeavour1200 wrote: Thu Dec 30, 2021 2:09 pm
Abdullah wrote: Sun Dec 12, 2021 6:13 am The usual suspects are sparkplugs, throttle body and MAF sensor. Have you inspected them and cleaned them?

Sent from my GM1910 using Tapatalk
Yes, I'm gonna take a look at the throttle body and maf sensor.
Good start. I had a similar issue a while back where the idle stalled out at times and I had to rev to keep it going. I cleaned the MAF and the Throttle Body (make sure to disconnect the harness and the battery). The cleaning resolved the issue. Make sure to use the appropriate cleaning products for these components.

Re: Idle dropping to 600 rpms

Posted: Mon Jan 03, 2022 11:02 am
by Endeavour1200
I've got the throttle body, sparkplugs and maf checked. Also replaced the valve cover gasket as it was leaking. Still idles around 600rpm and mechanic says since it has an electronic throttle body, idle can't be adjusted. What does your car idle at?

Re: Idle dropping to 600 rpms

Posted: Mon Jan 03, 2022 6:29 pm
by KuroNekko
Endeavour1200 wrote: Mon Jan 03, 2022 11:02 am I've got the throttle body, sparkplugs and maf checked. Also replaced the valve cover gasket as it was leaking. Still idles around 600rpm and mechanic says since it has an electronic throttle body, idle can't be adjusted. What does your car idle at?
When my manual transmission Kizashi is at normal operating temperature, it idles at 600 RPM. I believe that is normal.

Re: Idle dropping to 600 rpms

Posted: Tue Jan 04, 2022 2:22 pm
by Endeavour1200
KuroNekko wrote: Mon Jan 03, 2022 6:29 pm When my manual transmission Kizashi is at normal operating temperature, it idles at 600 RPM. I believe that is normal.
Yeah, then I believe my MT also idles fine. The engine vibrates though, so i think I need to look into the motor mounts.