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2.5 high idle by Fieroto300zx
Started on: 01-29-2015 05:39 PM
Replies: 2 (214 views)
Last post by: 2.5 on 01-30-2015 04:16 PM
Fieroto300zx
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Report this Post01-29-2015 05:39 PM Click Here to See the Profile for Fieroto300zxClick Here to Email Fieroto300zxSend a Private Message to Fieroto300zxEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have a se fiero 2.5 and it has a idle issue it idles really high about 2500rpms all the time what all could be causeing this ? It's my brothers car and well I have to fix it for him
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Gall757
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Report this Post01-29-2015 06:28 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Usually it's a leak in the vacuum system. Check to see how the brake booster tube is fitting....that's a lot of air. The other spot to check is the gasket below the EGR valve.

To clarify a bit: The intake manifold needs an airtight fit everywhere, or it sucks in more air and the vacuum drops....increasing the idle in the throttle body. You need to seal up any little cracks or holes that let more air into the manifold....cracked or missing vacuum tubes will let a bit of air in....but the rpms will not go up to 2500.....you need more air to get that high..

[This message has been edited by Gall757 (edited 01-29-2015).]

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2.5
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Report this Post01-30-2015 04:16 PM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
What he said.

Also is everything else fine? No check engine lights or any symptoms?
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