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1999 Chevy S-10 engine floods and stalls

Tiny
DAVID GAWORSKI
  • MEMBER
  • 1999 CHEVROLET S-10
Engine Performance problem
1999 Chevy S-10 6 cyl Four Wheel Drive Manual

engine seems to flood and stall at 3ooo or lower rpm when up to normal temp. Tried your suggestion changed ect temp sender, problem became more erractic. Tried changing maf sensor, no improvement. Any suggestions?
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Monday, March 30th, 2009 AT 8:57 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You need to check the fuel pressure to rule out the fuel pump overpressurizing the system due to clogged return line and a problem with the regulator leaking or injector/s leaking. Also check the MAP sensor
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Monday, March 30th, 2009 AT 10:35 PM
Tiny
RASMATAZ
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Have you checked the fuel pressure?
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Wednesday, April 8th, 2009 AT 9:59 PM
Tiny
DAVID GAWORSKI
  • MEMBER
  • 2 POSTS
Fuel pressure is 52-54lbs according to manual right were it should be.
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Thursday, April 9th, 2009 AT 9:05 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine Performance problem
1999 Chevy S-10 6 cyl Four Wheel Drive Manual

4.3L engine is a 6cyl The fuel pressure should be 60-66 psi yours is on the short side.


https://www.2carpros.com/forum/automotive_pictures/12900_fuel_pressure_9.jpg

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Thursday, April 9th, 2009 AT 9:14 AM

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