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E46 M3 (2001-2006)

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Old 03-04-2013, 09:17 AM
MK1 MK1 is offline
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Location: Newcastle
Join Date: Mar 2013
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Mein Auto: E46 M3 SMG
Help with P0128 Fault

Hi all.

Sorry that my first post on the forums is a plea for help but ime getting a bit frustrated. My car has thrown up P0128 fault code (coolant temp below regulating temp) I have replaced both sensors on the block and bottom of the rad but no joy. Just wondering what the next coarse of action would be. Gauge on dash seems to come up nicley on cold start aswell so dont think it would be the thermostat but not 100% sure

Any help would be grately recieved

Last edited by MK1; 03-04-2013 at 09:18 AM.
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Old 03-09-2013, 06:57 AM
Pat7762 Pat7762 is offline
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Location: Deltona, fl
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Mein Auto: 05 BMW x3 3.0 + 93 325is
thats actualy exactly what the problem is, stuck open t-stat. just replace and bleed coolant and your fine. why didnt you research the problem before wasting money? thats a pretty easy problem to figure out and fix.....
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