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Old 10-08-2009, 08:34 PM   #7
ChevyTech
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Join Date: May 2004
Location: Minnesota
Posts: 4,621
Re: 89 k1500 engine code 45 need help

Did you get your truck fixed yet?

The most common problem on TBI trucks when they go rich is the coolant temp sensor.

The specs should be in another post of mine, but if you can’t find them with a search, let me know, and I will post them for you.
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