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#1
09-06-2007, 10:57 AM
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93 4.3 extreme high idle rpm
My 1993 4.3 just started to have very high idle. 1500 at startup and increasing as engine warms up. Looked for vacuum leaks, checked tps and iac. No other ideas except maybe intake manifold or gasket?
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#2
09-06-2007, 10:41 PM
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Re: 93 4.3 extreme high idle rpm
Check TBI gasket.
//2000CAYukon
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#3
09-17-2007, 10:14 PM
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Re: 93 4.3 extreme high idle rpm
I agree w yukon! Carefully ck with carb cleaner or ether to find a bad gasket or leak CAREFULLY!I had a 4.0 jeep that did that & it was tpi senser.Good luck
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