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1. 

   Bubbling in Radiator?

   ^^^^ Most likely: Your Evaporator or TXV is freezing up. Cooling stops then resumes when it thaws out. Cause: Refrigerant level low, moisture in refrigerant or both. Less Likely: The thermistor on your evaporator is not working. Suggest: You have the system pressure tested. If low...

   • Words: 100
   • flintknapper
   • Post #22
   • Mar 11, 2023
   • Forum: 80-Series Tech
2. 

   Bubbling in Radiator?

   Tyler, is your dash temp gauge showing an elevated temperature when this happens (as with an overheating engine). Did you check for bubbles in the RADIATOR with the cap off (engine cold upon start up)? When you are driving....are you running your A/C then parking and turning engine off (and...

   • Words: 85
   • flintknapper
   • Post #20
   • Mar 10, 2023
   • Forum: 80-Series Tech
3. 

   Bubbling in Radiator?

   Tyler first....we are trying to differentiate between 'Bubbling' (bubbles SEEN in the radiator with cap off , engine at idle, upon first start up) and 'overheating' which is the coolant 'Boiling'. A combustion gas test is performed by attaching a special chambered tube to the radiator (where...

   • Words: 450
   • flintknapper
   • Post #10
   • Mar 1, 2023
   • Forum: 80-Series Tech