TRUCK ISN'T IDLING RIGHT LIKE ITS THIRSTING FOR GAS AND STALLS WHEN I COME TO A STOP.

1994 GMC Sierra

Tiny

rooney627

July, 30, 2012 AT 2:39 PM

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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5 Answers

Tiny

Docfixit

July, 30, 2012 AT 2:45 PM

Suspect faulty Idle Speed Control servo che cked for codes?

Tiny

rooney627

July, 30, 2012 AT 2:48 PM

Could it be missing firing because of the spark plugs?

Tiny

Docfixit

July, 30, 2012 AT 2:50 PM

Well don't know does it miss or just slowly die?

Tiny

rooney627

July, 30, 2012 AT 2:55 PM

I'd say slowly dies, like it sounds like I ran out of gas. It will rumble twice and then stall out

Tiny

Docfixit

July, 30, 2012 AT 2:56 PM

Check for codes and have ISC checked out

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