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2001 Chevy Blazer Hesitation when giving gas

Tiny
DESPERADO55
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 91,537 MILES
I just fixed the wiring harness on my 2001 chevy blazer. It had a short in it. I've replaced the coil, spark plug wires, and spark plugs. It starts right up, sounds good, and runs good till I get to about 45mph. It then acts like it is not getting gas, but if I take my foot off the gass and then give it gas, it takes right up. It runs fine until I get to about 55mph and does the same thing. Acts like it is going to quit but then takes off again.

Thanks for any help.
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Sunday, May 4th, 2008 AT 8:59 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a CEL/MIL On and when was the last major tune-up and battery disconnected?

Check your throttle position and mass airflow sensors to include a fuel pressure check-
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Sunday, May 4th, 2008 AT 9:23 PM

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