1987 Honda CRX Overheating....

139,440 MILES • 4 CYL • 2WD • MANUAL
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HONDACRX_87
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  • 3 POSTS
Why does my car overheat at low/idle speeds?
A couple of years ago I had a new water pump/timing belt installed and it did good for awile.
For awile now my car blows a small amount of antifreeze into the overflow. I went to Asheville n.c. for vacation with my car and it did good on the long distance trip. Sometimes but not all the time some white smoke comes out of the tailpipe when it overheats. I do not believe that there is coolent in my antifreeze and this car has had carburator problems before but I have fixed some of them. i have recently installed a new fuel pump. Could my problem be a intake gasket or a modulator diaphram? The carb. might be running lean, could this cause overheating? any info is appreciated ! Thank you.
Sep 19, 2010 at 5:37 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
It sounds like the cooling fan isn't coming on. At idle, the fan needs to draw air through the radiator. When you are driving at highway speed, the air automatically draws through.

The white smoke has me concerned. If coolant is getting into the combustion chamber via a bad head gasket, that is what it will do. Also, it can cause it to hverheat.

Have you ever had the head gasket checked?
Sep 25, 2010 at 5:01 PM
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