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Discussion Starter · #1 ·
Heater is inconsistent, takes forever to warm up, temp gauge will max out check gauges light comes on then hot air starts blowing thru vents and needle goes back down just under 200. Bad thermostat? Coolant level was low so added to full mark and same thing keeps happening. Any ideas?
 

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Because your fluid was low and is now topped up. You may still have an Air Lock.
Drain some of your system. Wouldn't hurt to replace your stat with a newer one before one fill your cooling system while warming it up

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As you are filling the radiator rapidly squeeze the radiator hose. Alot of time the pressure of squeezing the hoses will push the air out.

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