2004 GMC Envoy "check engine light code p0128" Questions

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check engine light going on and off the last couple days. computer reads code P0128 Do you know what this is? Where is the Engine Coolant Sensor located on my 2002 Envoy? The Chiltons manual says ...

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...check if it's running more than it should). Replace if necessary. * Verify proper engine coolant temperature (ECT) sensor operation, replace if necessary. * Verify proper intake air temperature (IAT) ...

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...check engine light remains illuminated. Diagnostics revealed codes: P1133 and P0128. P1133 points to a heated oxygen sensor and P0128 indicates a possible defective thermostat. The O2 sensor was ...

Check engine light on 2004 GMC Envoy. Had air intake sensor replaced. Failed inspection diagnostic code came up P0128. I have been told I needed an air pump, a tune -up, injectors cleaned etc. etc., I

CHECK ENGINE LIGHT IS ON,CODE COMING UP ON READER IS T 0128 HOW TO FIX THIS PROBLEM P0128 is a code for low coolant temperature. This is a fairly common code on the Envoys/trailblazers. The usual fix ...

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...Check engine light is on. Handheld computer is logging misfires, P106, P128 codes. Lags and will not accelerate. Please help. The P0106 code indicates a problem in the MAP sensor area. Did you ...

...Check engine soon light is on the code for the trouble I am having is P0128. This means bad thermostat-it is not running hot, engine coolant temperature sensor which I had replaced, defective intake ...

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...engine off and the MAP sensor unplugged, check for 5 Volts at the reference wire to the MAP sensor connector with a Digital Voltmeter. If there is none, check for reference voltage at the PCM ...

...Check engine code P0128 What can cause a Check engine code P0128 to come back after it was fixed once. Coolant sensor and thermostat were replaced and no check engine light for about 2 weeks. CODE ...

2004 mercury mountaineer check engine code P0128 check engine light came on and had it tested and came up with code P0128. what is this and how can it be fixed should have told you when checked?

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