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1989 SHO has poor Accerlartion

Tiny
MY1989SHO
  • MEMBER
  • 1989 ALL OTHER MAKES ALL OTHER MODELS
My 1989 SHO has a promblem when I drive it and go to put the pedal to the floor it wants to sputter and misfire. I noticed that it only does it when the car is warmed up. I replaced the spark plugs cleaned the fuel injectors and had the fuel system profesional cleaned out and it still does the same thing. I thought it might be my fuel pump because when I go to start the car in the morning I have to leave the key on the ON postion until I can start the car you can hear the fuel pump turn on but if I go to start the car right away it wont start right of way I have to crank the engine a couple of times befor it will start, but if leave it on the ON postion for a 1min or 2 it will start after 2-3 cranks. Please Help
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Wednesday, February 1st, 2006 AT 7:12 AM

1 Reply

Tiny
GODBEAR839
  • MECHANIC
  • 77 POSTS
Have the fuel system checked out it could be a lazy pump or a bad fuel pressure regulator. See if one of those is the cause. Have you changed the filter lately also it may be clogged that could cause the problem also.
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Wednesday, February 1st, 2006 AT 8:32 AM

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