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MAF, purge

Tiny
VICKI JACKSON
  • MEMBER
  • 2002 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • AUTOMATIC
  • 187,000 MILES
Received codes for MAF, purge valve, and o2 censors. Replaced them all.
Codes for o2 sensors gone, the others remained. Realized the fuse for MAF and purge was blown, replaced it, codes were cleared, but returned.
Then the fuse blew again.
What could the problem be?
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Sunday, June 25th, 2017 AT 12:54 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,591 POSTS
Hello,

I am showing a MAP sensor instead of the MAF sensor I hope that is correct. You must have a wire touching ground somewhere here are some engine wiring diagrams (below) and a guide to show you hoe to test the system and find the problem. You are checking resistance to ground. Just for fun though disconnect all of the injectors to see if the fuse blows.

https://www.2carpros.com/articles/how-to-check-wiring

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken
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Tuesday, June 27th, 2017 AT 3:28 PM

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