I have a 2002 GMC Envoy with 108k miles and have new air filter, fuel pressure regulator, spark plugs, fuel filter, and just did 3 step fuel injection/throttle body/gas treatment service.
It idled longer and rougher before I replaced pressure regulator, but I'm running out of options. Also, the "check engine" light does not come on.
So would changing my vacuum hoses help/fix this? What could this be?
Any help would be appreciated.
Thanks
Ariel
2006-06-15
15:09:14
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4 answers
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asked by
Ariel G
1
in
Maintenance & Repairs