Idle and flat spot? HELP

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.

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MR2Kyle
Posts: 211
Joined: Tue Mar 05, 2013 3:53 pm
Location: Auchterarder, Scotland

Idle and flat spot? HELP

Post by MR2Kyle »

Hi folks...bit of an issue:
1. Idle at warm up can vary from 900rpm-2100rpm and will hunt from time to time.
2. After removing the manifold last weekend to do some maintenance after putting it back together whenever I'm in 1st and 2nd driving at around 2000rpm the engine gets VERY lumpy/jumpy but seems alright at any other rpm. This also happens when warm...
Any help would be greatly appreciated as I'm getting to my wit send with this car.
Thanks
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markstevieandmads
Posts: 2025
Joined: Mon Aug 05, 2013 8:18 pm
Location: Swindon, Wilts

Re: Idle and flat spot? HELP

Post by markstevieandmads »

Did u put all the earth's back at bottom of manifold? And have they got a good clean connection?
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MR2Kyle
Posts: 211
Joined: Tue Mar 05, 2013 3:53 pm
Location: Auchterarder, Scotland

Re: Idle and flat spot? HELP

Post by MR2Kyle »

Sorry it's just the top part of the inlet I removed...throttle body and bit that's connected to the throttle body...so I could get at the cam cover to replace the gasket.
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fred130111
Posts: 571
Joined: Wed Nov 06, 2013 9:10 pm

Re: Idle and flat spot? HELP

Post by fred130111 »

There are earths at the bottom of the manifold? :silent:
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Pauln
Posts: 850
Joined: Mon May 08, 2006 10:15 pm
Location: Cardiff, South Wales

Re: Idle and flat spot? HELP

Post by Pauln »

If you've had the throttle body off, I'd check all the vac pipes on the throttle body for leaks. Failing that I'd check the TPS and ICV are working as they should.

Sorry just noticed you may be talking about a MK1.

Paul
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