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Revving issues on FC

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Old 11-14-17, 06:16 PM
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Revving issues on FC

Hi guys,

I have a 85 turbo s4 rx7 that has been sitting in storage for quite a while (it's seen better days unfortunately). A mate and I decided recently that we should pull it out of storage and start to get her back up to the glory days but we have struck an issue that we can't diagnose.

Long story short we have got it running again but it won't rev properly - when it's cold it revs up OK but once it gets up to full temp it won't rev at all, it just stalls.

So far we have had the injectors reconditioned, replaced the CAS and replaced the O2 sensor. And a full oil change of course.

It's running a microtech lt8 so airflow meter etc are removed.

Any ideas would be great.

Thanks for the help! Apologies if this is the wrong place to post.

Last edited by aobrnz; 11-14-17 at 06:19 PM.
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Old 11-14-17, 07:44 PM
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Can you connect to the ecu and log it? Is it going rich or lean of where it should be when you try to rev it?

If it revs out cold but not hot I would suspect a manifold leak opening up with temp or a faulty coolant or air temp sensor. Even if you just have a hand controller you should be ablt to check the sensor inputs including throttle to make dure they are reading as expected to narrow it down.

Last edited by Slides; 11-14-17 at 07:57 PM.
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Old 11-15-17, 02:55 PM
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Awesome thanks, I do have the hand controller so will check this weekend!
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