montenegrobryan5
New Member
I have a 91 civic hatch si with a d15b2 and a d16a6 intake manifold, every time it reaches op temp the idle will surge when driving and it sometimes will stall, I regasketed everything , it's all good, plugs are new, distributor is good , ignition timing good, valves are adjusted, throttle cable is adjusted, i tested the iac valve by hooking it up to a battery and the cylinder inside of it moves in and out so I'm guessing it's good, no vacuum leaks, fuel filter is new , timing is good and I bled the coolant system but the fan won't kick on but it hasn't overheated, I jump tested the fan motor with the battery too and it works so I'm gonna replace the therm temp switch to see if it kicks on but what could that idle be? The cel code came on for code 1 oxygen content and I replaced the 02 sensor and the TPS is still good too help me please!!?
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