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Print in friendly format Send this term to a friend  Z25
Refers to 1993 Anniversary Editions; also known as Ruby.

These are the actual cars honored as anniversary cars.

They have RPO Z25 to prove it....
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Re: opti question

Subject: Re: opti question
by 1Fast04Vert on 2010/7/10 18:05:43

Quote:

denz93 wrote:
I havn't noticed but its possible since i have had the water pump off twice now. I will pick one up and change it. but wouldn't there be a code if the loop wasn't closed.


If your digitsl gsuge works leave it alone, it is providing input to the ECM/PCM like it should. The analog gauge works off a seperate sensor in the head so don't think it is part of the equation.
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