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pontiac 3800 long crank

  • shayne.johnston
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7 years 8 months ago #20572 by shayne.johnston
pontiac 3800 long crank was created by shayne.johnston
I got a 2000 Pontiac Bonneville no codes after it sits for 3 hrs or so I get long crank and most of the time need to hold it to the floor to get it to start. when it starts it is flooded. checked ect sensor it shows correct temp. intake air temp sensor same. I pulled the fuel rail ran the fuel pump and let it set with the fp regulator vac hose off. no leaking injectors or regulator. tried a different maf same thing. also it seams to idle faster then I think it should. dis idle is like 850 to 900 on a warm engine. it always seams to run about 75 to 100 rpms higher then dis. after you put it in gear it will idle down to about 650 or so where it should be. when you take it out of gear dis goes back up to 850 to 900. all that said i'm thinking computer. thinking its calling for all the gas at startup. I just don't know why. I hate to call a bad pcm without proof but I'm running out of options. any advice would be appreciated. Thanks in advance.

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