My 1990 honda accord lx shuts down after running for 15 mins, have replaced the radiator bc it over heated and the thermostate but the problem persist but also after the car stalls it takes 20 mins to restart why is this happening ?
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Just checked a 1990 Accord LX. It is right above the oil filter. It is visible from the top of the car, but it looks like you would want to remove the oil filter and access it from the bottom because the intake manifold is in the way going from the top.
If you have never changed that distributor on your 1990 Accord, I would suspect it. Check for spark while cranking. The sensors inside the distributor would usually heat up, after 15-20 minutes of running, and would then die out, until the car is cooled off for a while. Look into that distributor.
Sounds like the pgmfi relay is going out. This is a common problem with these cars. They get hot and dont want to work, they cool off and everything is ok.
If you gauge is readin g that high, you are over heating, maybe not to the point of engine shut down or hose failure. I suspect the thermo sensor that is mounted in the radiator is not operating, therefo causing the cooling fan not to function at high temps.
I recommend you have this checked quickly.
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.
On my 1996 Accord (4cylinder), this was caused by a tube inside my radiator overflow tank dropping off into the tank - the radiator would have too little fluid in it, so the fans would run a LONG time after shutting the thing down. The tank is in the front left, a white cap with a black tube running out of the cap to the radiator. Underneath the cap there should be a foot or so of hose - this is what fell off of mine.
Hooked it back up, made sure enough fluid was in the radiator, and no more problem.
The dashboard coolant heat gage will show the high temperature, also.
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