My car froze up due to lack of antifreeze now it is surging when it warms up to operating temp.
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1995 Honda Civic Question: idle surging
Answer #1rdude135 December 17, 2009, 07:44Journeyman
There could be two issues here. If the engine seized due to over heating that could cause a number of problems and should be addressed first.
Idle surging typically is due to some type of vacuum leak. This could come from a broken vacuum hose, leaking intake, brake booster leak or a stuck idle air control valve. Once the vacuum leak is found and repaired then the engine base idle can be set and the surge should go away.