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Truck isn't idling right like its thirsting for gas and stalls when I come to a stop.

Tiny
ROONEY627
  • MEMBER
  • 1994 GMC SIERRA
  • 263,589 MILES
I thought it maybe had water in the gas but I replaced the fuel pump and put dry gas and lucas in it. It idles like it's thirsting for gas(the gas tank is full or half full when it does) it runs good when I go down the highway and when I drive on the road, but when I come to a stop most of the times it stalls it starts right back up though. I turn it on and let it idle for about 15 minutes and the idling gets better and doesnt sound like its thirsting for gas as much.
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Monday, July 30th, 2012 AT 2:39 PM

5 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Suspect faulty Idle Speed Control servo che cked for codes?
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Monday, July 30th, 2012 AT 2:45 PM
Tiny
ROONEY627
  • MEMBER
  • 8 POSTS
Could it be missing firing because of the spark plugs?
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Monday, July 30th, 2012 AT 2:48 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Well don't know does it miss or just slowly die?
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Monday, July 30th, 2012 AT 2:50 PM
Tiny
ROONEY627
  • MEMBER
  • 8 POSTS
I'd say slowly dies, like it sounds like I ran out of gas. It will rumble twice and then stall out
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Monday, July 30th, 2012 AT 2:55 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Check for codes and have ISC checked out
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Monday, July 30th, 2012 AT 2:56 PM

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