Question about 1986 Toyota MR2

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Serging Idel I need some help.. when my car is first started the idel serges from about 1000rpm to about 2000rpm... What will fix this? A frend told me it was just air in the coolent lines. if it is how can i get the air out? Thanks Cam

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  • cam_132 Oct 13, 2008

    Yes... well Throtal Body...



    Its a MR2... they all are throtal body

  • yadayada
    yadayada May 11, 2010

    I am really confused, what would air in the coolant lines have to do with a surge at idle? is this a serious question? I ask because we get allot of prank questions with no real answer.

  • yadayada
    yadayada May 11, 2010

    Is this car fuel injected?

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It's a common problem called 'hunting'. It rev's on it's own yes ?

You will have air in the coolant system, it's quite a long process to bleed properly and you must get it right. My advise is have a look on my club www.imoc.co.uk, we have a mk1 section and some fantastic how to's. All your problem's will be covered. check your expansion tank cap for sign's of cracking as well. Mine has just gone on me and has caused the hunting as it allow's air to be sucked into the coolant causing bubble's to pass the temp sensor and give the ECU a false reading wich adjust's the fuel injected.
We are a very freindly bunch with a lot of experience and will be able to help you.

Posted on Oct 13, 2008

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