Erratic Idle problem solved-Intake manifold vacuum leak - Mustang Evolution

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Old 06-01-2010, 10:26 AM   #1
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Thumbs up Erratic Idle problem solved-Intake manifold vacuum leak

Finally
Found out from mechanic what was causing erratic high idle in neutral from 1,500 rpms to 2,000 rpms even did this when driving vehicle as you could hear it when shifting the 5spd.

Mechanic installed new intake manifold gasket. He did a smoke test and showed me where all the leaks were.
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Old 06-01-2010, 12:29 PM   #2
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Re: Erratic Idle problem solved-Intake manifold vacuum leak

I had the same problem with my olds about ten yrs ago. She wouldn't idle,changed one gasket and BAM!......fixed.
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Old 06-01-2010, 02:25 PM   #3
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Re: Erratic Idle problem solved-Intake manifold vacuum leak

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Originally Posted by DDTCM View Post
I had the same problem with my olds about ten yrs ago. She wouldn't idle,changed one gasket and BAM!......fixed.
But in this case it was like this for over a year.
The ECT sensor and ACT sensor were both replaced with Ford parts. The Throttle Body was cleaned along with a new IAC Valve and gasket replaced.

After all of that now it works.
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Old 07-29-2010, 10:10 PM   #4
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Re: Erratic Idle problem solved-Intake manifold vacuum leak

its funny what a little gasket will do
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Old 07-29-2010, 11:14 PM   #5
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its funny what a little gasket will do
The ten cent part cost the race
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Old 07-30-2010, 09:56 AM   #6
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Re: Erratic Idle problem solved-Intake manifold vacuum leak

Sweet love to hear problem solved
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Old 07-30-2010, 09:58 AM   #7
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Re: Erratic Idle problem solved-Intake manifold vacuum leak

glad to hear that it is fixed
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Old 07-30-2010, 10:08 AM   #8
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Question Re: Erratic Idle problem solved-Intake manifold vacuum leak

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Sweet love to hear problem solved
Thanks
Now it has a dead battery
Was running great hours before.
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