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My 996TT has developed a bit of a hiccup, stutter on idle. It does it when its cold and warm. I’m getting NO CELs.

When driving I sometimes feel the odd hesitation but it still goes like stink.

Been doing a bit of searching and it sounds like the MAF to me. It’s a 2001 model and I think its on the original MAF.

Will this be covered on warranty (UK) ? Not sure they’ll change it if there’s no error codes. It runs out in August and would like to get some money back on it before it ends. Even though there is a definite lumpy idle

Cheers

Andy ;)

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Sorry, but your MAF does little or nothing at idle.

Have you checked for pending fault codes?

Sounds like an intake leak to me.

Thanks for the prompt reply Loren

Sure I read somewhere that the MAF can give lumpy idle ?

Have checked codes and nothing has come up.

Where's a good place to start looking for intake leaks?

How long should the MAFS last ?. Mines 7 years old and has 42k on the clock

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Throttle body needs cleaning?

Took it to a local indy and they plugged their PWIS into it and still no error codes.

Did show a misfire on cylinder 5 only though ?

My OPC changed the Coil Pack under warranty but not the plug. When I got the car back it was still missing a bit but not as much. Will have to try the plug next.

All sensors were checked and all were ok

Does the spark plug sound like the problem ?

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When were your plugs last changed? What plugs are you using? It could be the plugs...I can't believe they didn't change those when they changed the coil packs, but if it were the plugs you should have problems at more than just idle.

Edited by wross996TT
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When were your plugs last changed? What plugs are you using? It could be the plugs...I can't believe they didn't change those when they changed the coil packs, but if it were the plugs you should have problems at more than just idle.

I couldn't belive they didn't change the plug either. Plugs have only been in for about 6 months.

At full throttle the car runs fine but I would say at very low revs its a bit hesitant.

I noticed that putting the air con on seemed to smooth out the revs............weird ?

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  • 2 weeks later...

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