Hey folks,

  On our 89, we are having an overheating issue that is stumping us.  Here are the symptoms:

   - Seems to heat up quickly - compared to our 84 teh needle moves up quicker
   - Radiator is hot
   - Both lines to/from radiator are hot
   - Cooling system has been bled
   - Radiator fan is coming on
   - Appears to be some bubbles in the reservoir - almost like a foam
   - Gets hotter and hotter at idle till the gauge is almost to max hot and starts blinking
   - On highway, stays hot and the light will start blinking; opening front heat valve tends to stop the blinking but tempo gauge needle does not move down at all

  Had the problem and did head gaskets and o-rings.  Problem still there.  There is a new waterpump already installed.  My guess is either a bad thermostat or a cracked head.  Is a bad thermostat a poosibility - since the radiator and lines are hot?

  Any ideas - PLEASE offer them.

  Thanx in advance...

  Z

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