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7th Generation (1993-1997) Specific discussion of the 7th generation

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Old 11-05-2010, 06:20 PM   #1 (permalink)
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gen 7 vacuum ports

I have a 96 corolla with a 1.8. The throttle body has 4 vacuum ports. I only have vacuum from 3 of the 4 ports. Before I try sticking a hard wire in the port to try and free any blockage I am wondering if I should have vacuum at all 4 ports
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Old 11-07-2010, 07:41 AM   #2 (permalink)
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There are TWO kinds of vacuum ports. One has manifold vacuum so you hear it when you remove a hose at idle. The other is ported vacuum that only has vacuum when the throttle is opened.

-SP
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Old 11-07-2010, 07:01 PM   #3 (permalink)
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Thanks ill have to check again, idle vs higher rpm. If i still get nothing i guess i have blockage to clear out.
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