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Author Topic: high idle after intake change  (Read 2547 times)
rickibrat2
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« on: November 07, 2010, 04:18:56 pm »

1989 302

after intake change high idle

was told i need to reduce the size of the idle air control opening or block it off

tb is 70 mm cobra unit with cobra maf meter

ecc is the police a9t unit
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Haystack
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« Reply #1 on: November 07, 2010, 09:46:31 pm »

$10 on a vacuum leak. The intake should not change any part of the idle, if you are using the same electronics. What else have you changed, and what codes do you pull up?
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Darkhorse5.0
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« Reply #2 on: November 08, 2010, 12:34:55 am »

my vote is for a vacume leak as well...I changed intakes a couple years ago and had the same problem.  Lower intake gasket was the culprit, I took my time and reinstalled to get it right.  If you changed throttle bodies on your intake, did you set your idle on your new one? 
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Joel5.0
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« Reply #3 on: November 08, 2010, 06:42:05 am »

1989 302

after intake change high idle

was told i need to reduce the size of the idle air control opening or block it off

tb is 70 mm cobra unit with cobra maf meter

ecc is the police a9t unit

You were given misinformation on that "correction" as the guys already mentioned. Looks like you have a vacuum leak, TB blade too open, stuck IAC valve in partially open position, or EEC not detecting closed throttle position. Suggest to check for vacuum leaks and pefrom a base idle reset = http://sbftech.com/index.php/topic,1031.0.html ..... LUK
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