HELP - Jtd revs on its own. - Alfa Romeo Forum
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156 2.4JTD

HELP - Jtd revs on its own.

Help anyone please.

My 156 2.4JTD will all of a sudden rev to nearly 3K on its own for a few seconds then return back to idle without touching any pedals. It will do it 2 or 3 times in a day then be ok for a day or 2. I have also noticed that sometimes the idle speed is fractionally higher but then at the next lights etc it will be back to normal.

Any ideas will be appreciated - Thanks
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Re: HELP - Jtd revs on its own.

try cleaning the throttlebody first, fingers crossed a TPS replacement wont be neccessary.
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Re: HELP - Jtd revs on its own.

Unplug your MAF for a few days and see if that stops it, if so then you eitherhave a faulty MAF or the wiring is breaking down.
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