Last year my heater stopped working, resently my radiator was flushed. Abracadabra, nows there heat. Problem solved: NOOO!!!! Now there's no air & it's started running hot.. Ready,Set,Diagnose.

Asked by Jun 23, 2016 at 03:55 PM about the 2004 Chevrolet Blazer 4 Door LS 4WD

Question type: Maintenance & Repair

04 Chevy blazer 4x4 with 90 thousand miles

3 Answers

87,035

Was this a machine flush? Sounds like air in the cooling system. What do you mean about "no air" did the heater blower stop working?

1 out of 1 people think this is helpful.

No heater blower still blows, actually the now it blows wide open regardless if you turn it off or not.. Not certain what "machine flush" is, but I'd call what was done 'manual flushing' lol. Just stumped as to why it's running hot.. Thanks so very much for answering me.. Until next time. 4x4 Jaw

87,035

A machine flush is a machine that pulses the flushing agent back and forth through the cooling system, then pulls all out and pumps in new coolant. It is still possible that the radiator is restricted or the thermostat is not opening fully.

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