1992 Toyota Pickup overheating when heater is on

1992 TOYOTA PICKUP
229,000 MILES • 4 CYL • 4WD • MANUAL
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GROMET
  • MEMBER
  • 1 POST
Hi! when heat is selected the temp. gage starts to rise and goes allmost to red line. I turn the heater to cool and it slowly goes down to normal temp. thermostat has been clanged, coolant level full and no leaks. Thank You for any help
Nov 21, 2008 at 3:52 AM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
HI there,

I would be getting a thermo reading of the cooling system as i feel that this may be am electrical problem with the gauge and not a cooling system issue, get the temp readings and report back your findings.

Mark (mhpautos)
Nov 21, 2008 at 11:58 AM
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