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1999 Chevy Blazer 99 Chevy Blazer Acceleration problem

Tiny
SIMPSONFAN91
  • MEMBER
  • 1999 CHEVROLET BLAZER
1999 Chevy Blazer Automatic

I have a 99 Chevy Blazer 4X4 that will not accelerate past 40mph. I have replaced the fuel filter, fuel pump, water pump and a pulley in the past month. The check engine light was on until I replaced the fuel pump. It turned off, but then turned back on. I took it to Auto Zone and the EVAP SYSTEM code came back on the code reader. What could be causing the acceleration problem? I would appreciate any insight. Thank you!
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Thursday, October 8th, 2009 AT 9:14 AM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
Yes if EVAP leak is droping engine vacuum. Need code number in P0xxxx format.
Let me know
Thanks for donate
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Thursday, October 8th, 2009 AT 9:29 AM
Tiny
SIMPSONFAN91
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  • 2 POSTS
P0452
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Thursday, October 8th, 2009 AT 11:14 AM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
That code is for fuel tank pressure sensor and will need a diagnostic scan tool and if it passes then PCM is faulty. This code would not cause acceleration problem. But if PCM is faulty that would. Think it is time for professional help.
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Thursday, October 8th, 2009 AT 11:24 AM

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