chrisdefo |
09-12-2017 06:59 PM |
Ported TPI throttle body high idle
Hey guys so I just recently ported my stock tpi throttle body. Ive done a few before (not TPI) but was a little weary about the IAC on this one So i did a mild port job and did not go near the butterfly valves, well I got close but no I did not get close enough to take material away opening the gap more at the butterfly valves. When I started the car it idled fine, cruised down my street under 25mph fine. When I got back the car seemed to idle higher and once I put it into park the revs jumped and sat around 1400rpm (using an accurate tach). I shut the car down and let it sit about 15 minutes then started it back up. Car idled fine until I got out of my neighborhood and to the first light, it started to rev higher and higher until it hit about 1400rpm again and sat there. If I turn the AC on the rpms drop to about 950-1000rpm, also if I turn the car on once it has been sitting it will fire up and idle fine all day long. I pulled the IAC and made sure everything was clean and no metal shavings snuck in. I replaced throttle body gasket, and the top manifold/runners gasket. Could not find any leaks and also checked to make sure all sensors and vaccum lines are hooked up. No engine light either.
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