Cold start issues

By wotexva99
February 25, 2013 in Ask A GM Technician

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Duelin

Posted March 2, 2013

I noticed under your post you have a Hypertech MaxEnergy installed. Have you tried to remove it and see what happens? It might be commanding a lean mixture at startup. Also if you have a bad CTS sensor it could be telling the computer that the engine temp. is already warm so you wouldn't be getting a rich mixture on a cold startup.

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