1997jeep tj runnung rough
Likely either your thermostat is stuck open or is incorrect one (should be a 195f) , Or, the electric or clutch fan is on too early and not shutting off, or...the temperature sensor is not working and therefore telling the computer that the engine is cold when it's not. If the computer is believing that the engine is still cold, it remains in cold-start mode regardless of what is actually happening.
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