Mechanics

CHEVY UPON ACCELERATION POPS THROUGH INTAKE NO P

1999 Chevrolet Tahoe

Engine Performance problem
1999 Chevy Tahoe V8 Four Wheel Drive Automatic 157922 miles

TESTED FUEL PRESSURE AROUND 50LBS AT IDLE NO CODES ON SCAN TOOL, PLUGS LOOK GOOD IDLES FINE WON'T GO DOWN ROAD MORE THAN 40 MPH
Avatar
Ellisjim96
October 20, 2010.




Check engine compression may have faulty intake valve

Docfixit
Oct 20, 2010.
Checked compression with my gauge they were all around 100lbs

Tiny
Ellisjim96
Oct 20, 2010.
If gague is working compression WAY low should be 150-175 I'm surprised it runs. Have you checked for timing stretch ie. Wear and lots of play?

Docfixit
Oct 20, 2010.
Don't think gauge is accurate but they were all even. Starts and idles to good no miss at idle

Tiny
Ellisjim96
Oct 20, 2010.
I think I am having the same problem. If you press the trhottle does it die?
AD

Tiny
Tedlydub
Oct 23, 2010.
Does it free rev and the transmission does not want to shift? Almost like you have no 3rd gear or does it go when you stomp on the gas but still runs like crap?

That's what I am dealing with now

Tiny
Knightryda01
Nov 3, 2010.
Not any more mine will do no more than idle. At a loss
bout to give up on the tahoe

Tiny
Tedlydub
Nov 4, 2010.
Replace the fuel pump it will be just fine

Tiny
Ellisjim96
Nov 4, 2010.
Fuel pump, filter new lines
intake gasket
egr
all new.
Someone said MAF sensor too tired of throwin money at it.

Tiny
Tedlydub
Nov 4, 2010.
Try the rotor (the thing that spins) with the distributor That's what was wrong with mine. Runs smooth as day now.

Tiny
Knightryda01
Nov 10, 2010.

AD