V10 stalling
Mountain Pass
Joined: Mar 2007
Posts: 113
Likes: 1
To piggyback on this post my 02 just started doing this. 2 times in a week. Once just pulling out of the garage and once coming into it? Just quits like somebody shut it down. I didn't notice any lights blinking when it happened but I will look for that. It only has 45,000 miles on it. Only thing I can say is that I just oiled it for the winter so could I have gotten oil on the rear end sensor and making it go nuts??? Any help would be appreciated!
Sam
Sam
Elder User
Joined: Aug 2014
Posts: 560
Likes: 4
From: Anchorage, Alaska
I know this is an old thread, but I am having the exact same issue... Seems like a common enough issue on these trucks. Anyone figure out what the issue was?
I have replaced PCV, IAC, Fuel Filter, checked fuel pressure, checked all vacuum hoses, I do not have an EGR, TPS voltage with key on engine off is .99v. I am at a loss... Will only do it coming to a stop. Doesn't matter if fuel tank is full or empty, does it either way. Almost acting like a bad fuel pump, but pressure is good...
If I blip the throttle I can keep the truck from dying. After it dies I can put it in park and it fires right up.
I have replaced PCV, IAC, Fuel Filter, checked fuel pressure, checked all vacuum hoses, I do not have an EGR, TPS voltage with key on engine off is .99v. I am at a loss... Will only do it coming to a stop. Doesn't matter if fuel tank is full or empty, does it either way. Almost acting like a bad fuel pump, but pressure is good...
If I blip the throttle I can keep the truck from dying. After it dies I can put it in park and it fires right up.
Senior User
Joined: Feb 2011
Posts: 144
Likes: 0
From: Denver, Colorado
I know this is an old thread, but I am having the exact same issue... Seems like a common enough issue on these trucks. Anyone figure out what the issue was?
I have replaced PCV, IAC, Fuel Filter, checked fuel pressure, checked all vacuum hoses, I do not have an EGR, TPS voltage with key on engine off is .99v. I am at a loss... Will only do it coming to a stop. Doesn't matter if fuel tank is full or empty, does it either way. Almost acting like a bad fuel pump, but pressure is good...
If I blip the throttle I can keep the truck from dying. After it dies I can put it in park and it fires right up.
I have replaced PCV, IAC, Fuel Filter, checked fuel pressure, checked all vacuum hoses, I do not have an EGR, TPS voltage with key on engine off is .99v. I am at a loss... Will only do it coming to a stop. Doesn't matter if fuel tank is full or empty, does it either way. Almost acting like a bad fuel pump, but pressure is good...
If I blip the throttle I can keep the truck from dying. After it dies I can put it in park and it fires right up.
From my research on this forum and the great google, it seems that the throttle positioning sensor and crankshaft positioning sensor are two common reasons that this could happen. one post i read was about the crankshaft positioning sensor would fail when it got hot and would work when the temperature dropped.
If anyone has any other ideas or input i would gladly appreciate it.
Thanks
Elder User
Joined: Aug 2014
Posts: 560
Likes: 4
From: Anchorage, Alaska
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Elder User
Joined: Aug 2014
Posts: 560
Likes: 4
From: Anchorage, Alaska
Grimlin is back... I guess it's time to buy a new TPS and see if that fixes it. I am going out to clean the Throttle body again just for good measure. Fustrating to say the least. Engine runs like a top otherwise.
Elder User
Joined: Aug 2014
Posts: 560
Likes: 4
From: Anchorage, Alaska
I assume your responding to the original poster? My stall issue only occurs at idle or when coming to a stop and entering the idle circuit. I have replaced the IAC already.
Elder User
Joined: Aug 2014
Posts: 560
Likes: 4
From: Anchorage, Alaska
Driving around in town today, coming to a stop the truck started to die..... 800rpm, 700rpm, 600rpm, 500rpm, 400rpm, I took the shifter from drive to nuetral and engine went up to 1100rpm immediately. My torque converter has never made a sound like it was going out, but that's my suspect at this point.
Fleet Mechanic
Joined: Mar 2013
Posts: 1,576
Likes: 41
From: Wyoming
I know you said IAC is new but it sure sounds like a IAC issue.
1100 is too high in park or neutral. 400 is too low in drive with no gas applied.
Try starting motor, than unplug connector from IAC. Motor should die from lack of air. If it does not, suspect IAC.
Than plug IAC back in if motor dies, and restart motor. While idling at 1100, use a set of vice grips and clamp off a big portion of hose going to IAC. If that idles down motor culprit is IAC.
if not it could be the MAF. Take it completely appart and clean it. Don't just spray cleaner from front. Completely remove MAF from vehicle and clean thourally.
1100 is too high in park or neutral. 400 is too low in drive with no gas applied.
Try starting motor, than unplug connector from IAC. Motor should die from lack of air. If it does not, suspect IAC.
Than plug IAC back in if motor dies, and restart motor. While idling at 1100, use a set of vice grips and clamp off a big portion of hose going to IAC. If that idles down motor culprit is IAC.
if not it could be the MAF. Take it completely appart and clean it. Don't just spray cleaner from front. Completely remove MAF from vehicle and clean thourally.
Elder User
Joined: Aug 2014
Posts: 560
Likes: 4
From: Anchorage, Alaska
I know you said IAC is new but it sure sounds like a IAC issue.
1100 is too high in park or neutral. 400 is too low in drive with no gas applied.
Try starting motor, than unplug connector from IAC. Motor should die from lack of air. If it does not, suspect IAC.
Than plug IAC back in if motor dies, and restart motor. While idling at 1100, use a set of vice grips and clamp off a big portion of hose going to IAC. If that idles down motor culprit is IAC.
if not it could be the MAF. Take it completely appart and clean it. Don't just spray cleaner from front. Completely remove MAF from vehicle and clean thourally.
1100 is too high in park or neutral. 400 is too low in drive with no gas applied.
Try starting motor, than unplug connector from IAC. Motor should die from lack of air. If it does not, suspect IAC.
Than plug IAC back in if motor dies, and restart motor. While idling at 1100, use a set of vice grips and clamp off a big portion of hose going to IAC. If that idles down motor culprit is IAC.
if not it could be the MAF. Take it completely appart and clean it. Don't just spray cleaner from front. Completely remove MAF from vehicle and clean thourally.
It's nothing mechanical with the engine at this point.
Engine idles at 650rpm just fine when parked.
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
Here's an interesting article on the IAC valves - http://ricksfreeautorepairadvice.com...ol-valve-work/