Thread: wont start

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  1. #1 wont start 
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    ok so i got a 2000 grand prix gt and it wont start it killed like last week when iput itin revs then wouldnt start agine so came back after work starts right up started taking it back home ( like 1.5 miles and it dies like mile in to the drive then had to pull it home) but i replaced the crank senser bec i had that code back when i replaced the o2 senser also replaced the fule pump wich didnt chage anything so im suck bec i have air spark and fuel(wich is now in the oil from fluding so now gota chang oil too.....but ya so it cranks and will fire maby 1 cylider but thats it. any help?
    Last edited by 65mn; 07-14-2011 at 12:21 PM. Reason: rong speeling
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  2. #2 Re: wont start 
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    Disconnect the wire harness going to the MAF sensor and try to start it. It may need a bit of pedal to keep it running for a minute but should eventually smooth out. If the MAF is bad and you disconnect it the car will run off pre-programmed tables. It is enough to get you home but don't race with it, run WOT or anything like that. Just be nice and gentle on it.
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  3. #3 Re: wont start 
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    K I'm trying that now also found out its not the camhaft senson another 35$ lol
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  4. #4 Re: wont start 
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    Ya that's doing nothing. It wil just make a poping when u push the gas with and with out it pluged in butthanks for the help
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  5. #5 Re: wont start 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    holy hell you need to learn how to type in your first post.


    so its got fuel huh. whats the fuel pressure? is the fuel pressure regulator good.

    are all the spark plugs good, are they fuel soaked???

    how are the wires? ICM ground in good conditon?

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  6. #6 Re: wont start 
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    Iv replaced fule pump and spark plugs and put a a new icm like 2 months ago. The way it sounds is its time is way off. is it posible for it to knock the chain out of wack or brake just like that?
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  7. #7 Re: wont start 
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    compression test?
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  8. #8 Re: wont start 
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    No don't got tools but ill look more at it this weeked any other ideas would be ever help full and thanks
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  9. #9 Re: wont start 
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    The timing chains in these motors take a lot of abuse, so I highly doubt it's timing related. Take the vac. line off the fuel pressure regulator and see if gas is in it. If so, replace the FPR.

    Since you just replaced the CRANK sensor, go back and recheck your work. Make sure the harness is plugged in securely and that everything looks good and tight down there. It may have wiggled loose thus stopping the sensor from reading the crank properly hence not letting it fire. IIRC those bolts 2 need 14-18ft/lbs of torque on them to hold the crank sensor securely. May want to double-check the torque specs to be sure.

    Since this started after you did work, start there and work your way back.
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  10. #10 Re: wont start 
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    Ok ill do that but after it killed iv put in a new crank and cam sensors new. Spark pluges and a new fule pump. All inatemps of trying to get it running agin. I also tryed a new icm but that didn't work so retured that
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  11. #11 Re: wont start 
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    This may sound stupid, but give the balancer a look as well. Is it on all the way? Is the crank bolt still tight? Can you spin the pulley by hand? Hopefully you got it lined up properly when you reinstalled it and didn't shave the woodruff key off the crank.

    I'm wondering if the balancer isn't tight and walked out to the point where the CKPS can't pick up the interruper ring on it.
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  12. #12 Re: wont start 
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    Ya I got the bolt on as tight as posible the I did chick the stuck my finger on the side and the teeath are running tho the sensor but I'm convinced that it has to do with timing because I took stuff off intake to look at it from these and as it cranks it light up with the intake valves open and italso blows back air so almost like it is extremely. Advanced so I'm suck on how that would happen .alsohave checked injectors.they are all good .
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