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Old 08-17-2012, 06:41 AM
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P0128 Code

Been getting a P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) since coming back from my cross country trip. It is intermittent and can be cleared with the Tuner.

Question is: Engine temp is showing just in the operration range with code, without it is showing normal. To me this is either a t-state stuck open or a bad sending unit.

Ideas?

Last edited by MD05; 08-17-2012 at 09:20 AM.
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Old 08-17-2012, 09:21 AM
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Problem solved. Thanks Eric.
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Old 08-17-2012, 01:22 PM
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Originally Posted by MD05 View Post
Problem solved. Thanks Eric.
So what was the problem?
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Old 03-13-2013, 09:09 PM
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Originally Posted by MD05 View Post
Problem solved. Thanks Eric.
MD05, Can you elaborate on what the issue was, and what you did to correct it? Having the same issue here, and it's getting annoying to say the least. Thanks in advance!
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Old 03-14-2013, 04:00 AM
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Thermostats were the problem. ***** to get to with the EGR on, once the mounting bracket for the egr walked off the probelm was .... easy.
5-6 8mm bolts to pull the thermostats , bu tneed to pull the upper radiator hose too. Damn If I know how Ford does this with the EGR in place.

PS dont drop the cover screws you will never find them again. Don't ask how I know this.

Cheers
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Old 03-14-2013, 07:40 AM
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Quote:
Originally Posted by MD05 View Post
Thermostats were the problem. ***** to get to with the EGR on, once the mounting bracket for the egr walked off the probelm was .... easy.
5-6 8mm bolts to pull the thermostats , bu tneed to pull the upper radiator hose too. Damn If I know how Ford does this with the EGR in place.

PS dont drop the cover screws you will never find them again. Don't ask how I know this.

Cheers
Sweet, doing sinister EGR delete this weekend, and I already have the T stat kit on hand...thanks man, much appreciated!
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