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How much does it cost parts and labor to replace a valve cover gasket on a 1990 Honda Accord 4door.
take it in
1990 Honda accord ex how would you know if idle air control valve is bad?
on the intake
Replace your idle air control valve
No PCV valve on this engine. Has "PCV system". Hose from valve cover to throttle body. Nothing to replace.
The idle air control valve on a 1990 Ford Escort is located on the intake manifold. An idle air control valves function is to control the amount of air that is allowed to enter the engine so the idle can stabilize.
check the idle air control valve
disconnect the hose and remove 2 bolts.
One of these things is the cause. Thermostat stuck open, replace it. Heater core stopped up, backflush the hearter core, and service the cooling system. Heater temperature control valve defective, replace it.
does 1990 geo tracker have air bags
check your idle air control valve