Cuts in and out when u give it gas

Tiny
BURBALICIOUS123
  • MEMBER
  • 1997 CHEVROLET SUBURBAN
  • 294,774 MILES
Well I hate to say this bout my chevy but its messed up cuts in and out when u give it gas or when u go up a hill but straight stretch it does fine you can be driving down a straight stretch and it will be fine u go up a hill it bogs it self down real bad and cuts in and out or when your backk on a straight stretch and hit the accelerator it will cut in and out miss nd all this other stuff hooked it to a computer I couldnt pick a problem code for nothing please help chevy needs life
Monday, January 2nd, 2012 AT 5:30 PM

9 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check yoru fuel pressure 60-66 psi for csi systems, that's the big black plastic intake with a huge wire loom going in middle or 56-62 psi for sfi system.
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Monday, January 2nd, 2012 AT 6:23 PM
Tiny
BURBALICIOUS123
  • MEMBER
  • 5 POSTS
Well we tryed that and it wouldnt let me or something my uncle checked all that and he still couldnt find a problem
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Tuesday, January 3rd, 2012 AT 1:02 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If i'm correct the 97 was one of the ones that had an intermittent fuel pump problem. The harness goes bad about a foot from the tank and casues the pump to go in and out. If you have hte connector going toyour pump and I don't know if you can see it or not, then you may have the fuel pupmp problem. However the fix is to replace the pump with a new connector that should be supplied with the new pump. Also check the resistance in the crank and cam sensors. One other thing if you have the csi system, normally a small block, check for cracked lines under the top of intake, tha has to be removed to do it. The replacement is around $300
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Tuesday, January 3rd, 2012 AT 2:12 PM
Tiny
BURBALICIOUS123
  • MEMBER
  • 5 POSTS
Thanks for the help like I said it will go up a hill and will bog itself down pretty bad and act like it dont wana pull up a hill but we modded the vortec bo nd the past couple mornings its not been acting two bad honestly when I had a full tank of gas is when it got worst
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Tuesday, January 3rd, 2012 AT 5:07 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Put a vacuum gauge on it and check for vacuum if it's 15" or below check for a clogged converter.
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Tuesday, January 3rd, 2012 AT 6:02 PM
Tiny
BURBALICIOUS123
  • MEMBER
  • 5 POSTS
Well ive had people say that they could be it right now my muffler is literally my converter had a test run at oreilllys last night said my egr valve was bad unpluged it acted a lil better
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Wednesday, January 4th, 2012 AT 1:10 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then either try taking the egr off and cleaning it. You'll set a code and your fuel mileage will drop.
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Wednesday, January 4th, 2012 AT 3:40 PM
Tiny
BURBALICIOUS123
  • MEMBER
  • 5 POSTS
Should I cut the converters off and okay thanks for the help really
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Wednesday, January 4th, 2012 AT 5:15 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
No don't cut the converteroff. If it's not fixed havea pro look at it.
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Wednesday, January 4th, 2012 AT 6:07 PM

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