Check Engine light

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12-07-2007, 06:33 PM

dparsons06

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Check Engine light

Ok so i got my check engine light looked at and the code was P0128, what can this be?

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12-07-2007, 07:13 PM

Moparmatt440

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RE: Check Engine light

its P0128-THERMOSTAT RATIONALITY. There is a whole section that has all the code right above where you post

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12-07-2007, 08:36 PM

dparsons06

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RE: Check Engine light

I should have been more clear, what does that mean i have to change, the thermostat? any thing else i need to do?

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01-26-2008, 09:08 AM

1faststage0

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RE: Check Engine light

change the thermostat and clear the code. make sure you add more coolant because you'll probably lose some.

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03-28-2008, 02:36 PM

Swanny

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RE: Check Engine light

I'm not sure if this is fixed (I'm guessing it is). For the next guy with a P0128, also check out this article - http://www.obd-codes.com/p0128

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