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Thread: LT1 wont start??

  1. #1 LT1 wont start?? 
    Car Enthusiast CF Newbie
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    1996
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    Trans-Am ws6
    Ok, so about 3 months ago. my 1996 firebird trans am suddenly would die on me, then sometimes it would start back up, run fine for a little while then shut off and not start back up. or it would crank and crank, then when i stoped turning the key it would backfire like 2 or 3 times. soo, ofcourse first i thought opti-spark, so i got a brand new one and put it in, and got the same results. it would crank and crank but when i would stop turning it over it would either do nothing or almost act like it would want to start, or backfire. i know i have good fuel pressure(50llbs to the rail) and i have checked for spark at the plugs. then i took the plugs out and they were wet with fuel. thats when i thought who knows maybe my cam chain jumped. so i checked that and the timing marks are lined up perfect. now i am next to clueless. although one of my friends told me its possible my coil could be going bad. and isnt producing a powerful spark for it to fire under compression? but i am out oF ideas. so if anyone has any ideas, i would really appreciate it. THANKS!
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  2. #2  
    Sir LS1 CF Senior Member Mat's Avatar
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    for some reason i want to say fuel pressure regulator. fuel getting past into a vacuum line or ... wtf. idk maybe im blowing smoke out of my ass.

    codes at all?
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  3. #3  
    just some kid CF Senior Member kylesfirstgen's Avatar
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    i would say timing or fireing order if your plugs are wet its getting fuel it sounds like its not getting spark in the plug or not at the right time
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  4. #4  
    Olds wanted dead or alive CF Senior Member
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    It could be a bad crankshaft position or camshaft position sensor.
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  5. #5  
    Sir LS1 CF Senior Member Mat's Avatar
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    Quote Originally Posted by 70 cutlass s
    It could be a bad crankshaft position or camshaft position sensor.
    there wouldnt be spark at all if either of those were inoperable, i believe...i could be wrong.
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  6. #6  
    Olds wanted dead or alive CF Senior Member
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    It depends on which crankshaft position sensor it is. The good new is they can be tested without being taken off the car.
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  7. #7  
    Car Enthusiast CF Newbie
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    1994
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    Chevrolet
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    caprice
    I also have the same problem as the 96.. i have a 1994 caprice with lt1... i was just bout 2 check timing chain untill i read this guy with the same problem///
    Did u find the problem and if so.. what was it..?
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  8. #8  
    Olds wanted dead or alive CF Senior Member
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    Quote Originally Posted by dea_dave View Post
    I also have the same problem as the 96.. i have a 1994 caprice with lt1... i was just bout 2 check timing chain untill i read this guy with the same problem///
    Did u find the problem and if so.. what was it..?
    Number one problem for the 93-94 LT1 is that coolant will leak from the water pump and get into the distributor and it won't start.
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  9. #9  
    GM / Nissan Tech CF Senior Member YourcarFTL's Avatar
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    Good old opti spark
    N/A is the expensive way to go slow
    Quote Originally Posted by cycocase View Post
    lowly knuckle-dragging POS Mustang
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