Ok my 99 1500 5.9l truck, Dose not like to start, I have to push down the gas pedal and hold it and crank the truck for a few seconds for her to fire. Then the hole Truck shakes. But when I let go of the gas it will die. I have to keep on the gas and get the truck moving for the truck to stay running, And other time it will start like normal. with no problems.

Could this be a grounding problem or something else.

my family calls this a money pit, But I will never give
up on this truck!!!


Thanks everyone have a great day.

 

Sounds like the IAC is going out.

 

Yep gotta be the IAC. Had the same problem here.

 

Ive replace that part less then a year a go. I dont drive the truck more the 2000 miles a year, If its not that have any other Ideas? Or is there a why to test the sensor?

 

Just because you replaced it doesn't mean you didn't get a bad part.

I've heard of them being bad out of the box.

As far as testing, remove the IAC and turn the key on, you should see the plunger move when the key is turned on.

 

Thanks

 

Does your temp gauge work the way it should?

 

what is a IAC AND WERE IS LOCATED

 

Idle Air Control motor, and it mounts to the back of the throttle body. 4 wire connector.

 

Had this happen on my truck a couple of weeks ago. Here is the set-up:

Used remote start to start truck. Got in the truck after about 4 minutes, put foot on brake to shift into drive, and the truck died because I had failed to put the key in the ignition and turn it. (DOH!)

Truck behaved just as original poster indicated. Drove it about 10 minutes having to baby the gas even at stops.

Went into restaurant to eat. Came out and truck started normally, idled normally, ran normally.

Did I do damage to the IAC? Was the IAC just stuck in some weird calibration with the engine getting cut off?