1999 Chevy Blazer fuel system?

Tiny
BMOSLEY
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 134,000 MILES
My daughters 99 s-10 blazer was stalling when ever you would take off from a stop sign or light. It would drive perfect stop perfect and idle perfect. However, when the light would turn green, you give it normal gas and after about 10-15 feet it would die (no sputter or anything). Now it only starts when it wants to. The fuel pump sounds the same as always and no check engine lights come on when it stalls. If I can hear the fuel pump can it still be bad? Could the fuel filter be clogged? If so, can you help me with the location? Thanks!
Saturday, August 15th, 2009 AT 3:55 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Welcome to 2carpros and thank you for the donation

What we need to do here is verify the fuel pressure if okay -inspect and test the throttle position and manifold absolute pressure sensors and get back with some results asap so that we can continue to assist.
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Saturday, August 15th, 2009 AT 4:23 PM
Tiny
BMOSLEY
  • MEMBER
  • 2 POSTS
Thanks for the quick response! I have called checker auto parts and auto zone but it appears that nobody rents any kind of guages to check the pressure. Is there any other way to varify the pressure? Also, it started up fine for me a little while ago so I shut it back off and asked her to take it for a spin. By the time she went out it would not start again. Is it normal for the fuel pump (when bad) to come and go even though you can clearly here it running?
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Saturday, August 15th, 2009 AT 8:01 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have you tested the TPS and MAP sensor? You need to check the fuel pressure and get back with the readings.
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Sunday, August 16th, 2009 AT 4:56 AM
Tiny
MOONDOG_67_2000
  • MEMBER
  • 12 POSTS
If you can limp that blazer to a local Advanced Auto, most of them have a unit you can plug in yourself and read codes with their prospective meanings.
In my opinion, I think it could be your fuel filter. It also could be a mapping sensor as well most likely the O2 sensore on your exhaust.
This sensor tells the onboard computer what your fuel mixture is like and allows for changes in timming and so on to correct fuel variences.
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Sunday, August 16th, 2009 AT 3:31 PM

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