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Thermostat cycles between low and med at 30sec interval
1999 Ford Ranger

Thermostat cycles between low and med at 30sec interval

(1999 Ford Ranger)
Radiator was replaced prior to symptom. Cab heater air temp initially was 125 but dropped to 80 when temp cycles. Is this a sign on air in system?
1 answer & 1 comment
Popular Answer
on March 01, 2015
Was the T-Stat replaced?
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on March 01, 2015
New tstat and water pump prior to radiator replacement. Heater core was reverse flushed, good flow too.
Thx
General Diagnosis
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on March 01, 2015
Was the T-Stat replaced?
Sign in to reply
on March 01, 2015
New tstat and water pump prior to radiator replacement. Heater core was reverse flushed, good flow too.
Thx

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