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Forum namePerformance/Engine
Topic subjectRough idle after complete 420a rebuild.
Topic URLhttp://forums.2gnt.com/dcboard.php?az=show_topic&forum=5&topic_id=127717&mesg_id=127717
127717, Rough idle after complete 420a rebuild.
Posted by quikshot, Dec-31-69 06:00 PM
Hi guys,

I am new to the forums, but I thought someone here could help me to get my eclipse idling correctly. I recently rebuilt the engine with new pistons, rings, rods, water pump, oil pump, pretty much a complete rebuild. Other mods it has are unorthodox underdrive pulley, AEM intake, Greddy SP2 exhaust, megan headers, and magnaflow catalytic converter, all of which were added at the time of rebuild. Also, new spark plugs, wires, and coil were added. I tried re-using the old coil and plugs from before the rebuild but the problem still existed

The problem is that the engine lopes at idle and seems like it wants to stall, but runs fine at 1500 RPM and up. It did not do this before the rebuild so I think it was something I did but I have checked everything I can think of. Vacuum hoses appear to be in the correct locations. I checked the resistance of the Idle Air Control motor and the Throttle Position Sensor on the throttle body and they are within spec. If you guys have any idea on how to help, please post. I will try to post a sound clip so you have an idea of what I am talking about.

Thanks,
Mark
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