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My 1993 Honda Civic is works pretty well until recently. Its had a problem of idling noticeably loud, but now that is accompanied with rapid heating so that after 10-15 minutes of driving my engine is pushing over the top temperature and into the red. any help would be appreciated.
Sounds like your electric cooling fan(behind the radiator) is not functioning. The thermostat might not be working,making the fan
not come on at all. I once put a toggle switch in my dash,when I had
an old CRX, just to turn on the fan, or it would overheat.
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check if you have a viscous fan hub as from what you describe it appears that it has failed and is not driving the fan when idling. If you have an electric fan then it is not working properly if at all.
Had the same problem with two cars I had. First was fixed with a radiator flush and refill, second was fixed with a new water pump and belt. I would also look at the radiator and see if there is a lot of bugs and other gunk on it. That can cause the heat not to dissipate without the speed of driving pushing air over it. Pressure washer or coin-op car wash wash high pressure sprayer can clean that off.
check you oil and your antifreese mine just did this to me and it didnt smell like cooland but i was loosing coolant throug the motor but not onto the ground and my idle did the same thing yours is doing i am willing to bet its the headgasket
the only thing that is related is the d4/rough gear changing
speed/ rpm malfunction is caused by your speed sensor on the trani (common problem) change it
I had the same problem with my honda. On the throttle body there is a screw that controls idle speed. If your idle speed is around 800-1000 rpm in neutral, tighten the screw a quarter turn each try until the idle speed is around 1500 RPM. Did this stop the idle?
first check to see if the hoses to the heater core are hot. if they are not hot do the following.
Check the valve where the heater core hoses go into the cab, if the valve is good , you may have to wash out the heater core by removing both hoses at the firewall and run some water through the heater core until the water comes out clean of rust and debris.
this like many other hondas have a fast idle thermo valve located under throtle body or on the other side of the intake coolant runs thrue it you have to open it and adjust the plastic washer.
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