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Car repair troubleshooting

Tiny
MESCHELLE
  • MEMBER
  • 1995 PONTIAC TRANS AM
  • V8
  • 2WD
  • AUTOMATIC
Heater bolws cold air but engine over heats
Thursday, February 10th, 2011 AT 6:55 AM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Have the cooling system pressure tested for leaks, the heater often loose coolant and gets an air lock, start here.

Mark (mhpautos)
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Thursday, February 10th, 2011 AT 10:18 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If the thermostat is shut closed it will cause the engine to overheat and no heat-could also be airlock if you're replenishing the coolant and not bleeding it
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Thursday, February 10th, 2011 AT 11:33 AM

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Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.

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