help me diagnose

[primal1]

i have a 99 tahoe w/ a 5.7. i have a problem with it choking out if i accelerate quickly. i have installed new wires, plugs, cap, rotor. i just replaced the fuel pump. i performed the leak down test to see if it is the fuel pressure regulator. any suggestions?

i have a tune from jesse that is not on my truck(had to send it back to tweak the shifting issues)it does not do it as bad with the tune on.

[71GMC_3/4T]

Check or replace the air filter?

 

If you changed to anything other than ACDelco plugs, that could easily be your problem based on posts from others and my own experience.

[primal1]

Check or replace the air filter?

 

If you changed to anything other than ACDelco plugs, that could easily be your problem based on posts from others and my own experience.

 

<{POST_SNAPBACK}>

 

 

just recharged the k&n, i'm running split fires.

[3500in nc]

Check or replace the air filter?

 

If you changed to anything other than ACDelco plugs, that could easily be your problem based on posts from others and my own experience.

 

<{POST_SNAPBACK}>

 

 

just recharged the k&n, i'm running split fires.

 

<{POST_SNAPBACK}>

 

 

 

 

 

this sounds like a problem with the crankshaft position sensor when they start to go bad they tend to do that

[bronyaur]

The last time I encountered theat problem it was the fuel filter. Your post didn't say if you had replaced it so I thought I'd throw that out there.

 

[Mike G]

I have recently heard that an over-oiled aftermarket filter will cause problems. Drop in an old school paper unit and see if that fixes your problem.

 

Just a thought, --Mike