Hi gang, I've recently adopted a 90 Accord. Did all the engine work, runs great, but the heater is always supplying heat. Fan can be shut off, but it appears there's no control through the temperature control dial-thing. Car WAS equipped with A/C but hasn't been charged for years. Temperature control seems to be the problem because I can't feel much resistance when I turn the control from cold to hot--does anyone have an idea on how to fix? Thanks in advance!
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Re: 1990 Accord Too Much Heat!!
On passager side near the console under dash our gonna see a black plastic with a plastic snap remove that un der that the hot cold vent that cable is probably bend remove that cable and manualy move the trap heat will stop comming in or you can have a jam water valve under hood near firewall passager side hope it a fixya pierre
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Possible, with rad cap off, let vehicle idle until coolant fan comes on then shut vehicle off for 30 minute cool down. Top up rad, install cap and drive and recheck heater operation and any overheating.
you need to have the check engine light repaired first most likely related to heat and or gas issue and a check engine light is not a 1 issue thing code will need to be pulled if you have a autozone they can pull it for free and theres where we need to start .could be anything from o2 sensor to a thermostat ect...
There are two fan switches on that car; The main one turns the fan on and off when the ignition is on and the car is running. The second switch powers the fan if the ignition is off and the engine temperature is too high, to cool the engine off if it was just shut down. It sounds like your main fan switch has gone bad and needs to be replaced since it's not sending any signal to the fan, while the engine is running.
More likely it's yr heating pipes let water escape so check these thoroughly. Could be head gasket leaking into engine so chk that immed for any sign of water on the oil stick. Otherwise flush the engine water thru for an oily blockage. Always use coolant. cheers
Have you verified that system has been "burped" of air? That the fans kick on? Check radiator hoses for kinks. You can try running without the thermostat to see if that helps and can identify if the thermostat could be a problem. You may need to check your coolant mixture too.
Sounds like you have reduced flow or restriction in cooling (heat exchanger) as it runs fine at cooler temp but can't keep up when it gets warm.
New parts don't always equal working fine parts.
If the problem occur after you stop the car and switch-off the engine, it could be the master/main relay. After a few hours, you can restart the engine as usual. Try to replace the relay, it may work well. Happened to me and my friends before.
YOUR ENGINE IS RUNNING HOT.IF FAN KEEP RUNNING WHEN ENGINE IS OFF.CHECK COOLANT MAKE SURE ITS NOT LOW. REPLACE THE THERMOSTAT AND RADIATOR PRESSURE CAP.YOUR RADIATOR CORE COULD BE BLOCKED AND THE RESTRICTED GRILLE FULL OF BEBRIS AND THE.ENGINE BLOCK COOLANT PASSAGES COULD BE BLOCKED OR IGNITION TIMING COULD BE OFF.ALL THESE PROBLEMS CAN CAUSE YOUR ENGINE TO OVER HEAT.
stuck thermostat. In my country, some mechanics even remove entirely the thermostat (not applicable on cold weather);
faulty water pump;
too soft radiator hoses (upper and lower);
faulty/slow radiator fan. Again, in my country, some
mechanics hard wire the radiator fan to be always on when the engine is
running. In some cases, it could be the fan clutch.
This is of
course assuming that nothing is internally wrong with the engine, the
coolant level is as required and that there are no leaks, air bubbles
and the belt driving the water pump is mechanically sound. In most vehicles, the radiator fan will not work if the A/C or heater is not working.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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