Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!





Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Did you get a great deal? Let us know in the Values & Prices Paid section!
Meet your fellow owners in our Owners Clubs

2007 Chevrolet Silverado 4.8l V-8, Low Speed/Idle Issues

drewbearddrewbeard Posts: 2
edited November 2017 in Chevrolet
I have a 07 Silverado, 4.8 liter, V-8, It will start and idle perfectly. Problem is, within 1/4 mile from house:
RPMS start fluctuating (400-1200 rpms); and it will die, starts up/idle perfect, I have to rev it up to 1500 rpm, ride the brake, to take off or it will keep dying. Once it warms up, it isn't as bad; but it is happening more and more often.

I have checked the codes (and replaced): Throttle Position Sensor, Vacuum Purge Solenoid Valve, and Fuel Cap; Cleaned the throttle body/plate, and Reset the ECM.

I think it is a vacuum issue, the way it acts. It seems to run better if I pump the brakes, before leaving the house?

Sign In or Register to comment.