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I need some help with my truck.
#2017001
01/13/11 04:50 PM
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Joined: Apr 2009
Posts: 167
andyj9881
OP
Woodsman
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OP
Woodsman
Joined: Apr 2009
Posts: 167 |
Last time I had issues with my truck, you guys were spot on in identifying the problem. I need your help again. My truck is randonmly dying on me at low rpm's. It runs great while I'm moving but every now and then dies when I slow down or am at idle, but not all the time. I'm thinking either my fuel injection system needs to be flushed or my throttle body needs to be cleaned. Any advice? Thanks.
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Re: I need some help with my truck.
[Re: andyj9881]
#2017019
01/13/11 04:56 PM
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Joined: May 2009
Posts: 10,457
Ramball36
THF Celebrity
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THF Celebrity
Joined: May 2009
Posts: 10,457 |
what year and model truck?
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Re: I need some help with my truck.
[Re: andyj9881]
#2017051
01/13/11 05:05 PM
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Joined: Jan 2008
Posts: 25,258
Txkiller
the terminator
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the terminator
Joined: Jan 2008
Posts: 25,258 |
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Re: I need some help with my truck.
[Re: Txkiller]
#2017057
01/13/11 05:06 PM
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Joined: Apr 2009
Posts: 167
andyj9881
OP
Woodsman
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OP
Woodsman
Joined: Apr 2009
Posts: 167 |
Its a Dodge Ram 1500, 4.7L V8. Its a 2002.
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Re: I need some help with my truck.
[Re: andyj9881]
#2017132
01/13/11 05:31 PM
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Joined: May 2009
Posts: 10,457
Ramball36
THF Celebrity
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THF Celebrity
Joined: May 2009
Posts: 10,457 |
What RPM is it idling at? Sounds like you might get your problem fixed with some sea foam or injector cleaner....I personally would prob just adjust the idle for now until I could look at it a little closer
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Re: I need some help with my truck.
[Re: Ramball36]
#2017999
01/13/11 09:48 PM
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Joined: Aug 2009
Posts: 11,124
LandPirate
THF Celebrity
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THF Celebrity
Joined: Aug 2009
Posts: 11,124 |
Probably bad gas. All the ethanol in fuel today is heck on engines. I'd run a couple tanks of Sea Foam and the treat each tank with Stabil.
Mike Buda, Tx Hunt near Freer
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Re: I need some help with my truck.
[Re: LandPirate]
#2018865
01/14/11 02:32 AM
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Joined: Feb 2010
Posts: 838
pafree
Tracker
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Tracker
Joined: Feb 2010
Posts: 838 |
if it is racing up and down at idle before it dies then look for a vacuum leak. check that the intake clamps are tight. no cracks in the intake rubber. check for a dirty air filter. you might need to clean or change the MAS (mass airflow sensor) and also make sure it is plugged in. check the hoses coming from the valve covers to the intake are still plugged in and in good shape.
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Re: I need some help with my truck.
[Re: pafree]
#2019031
01/14/11 03:11 AM
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Joined: Feb 2009
Posts: 3,705
toolman
Extreme Tracker
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Extreme Tracker
Joined: Feb 2009
Posts: 3,705 |
Pull the air intake tube and see if there's oily residue all around the butterfly in the throttle body. If it's all black and nasty, get a spray can of throttle body\carb cleaner and a nylon bottle brush. Spray the heck out of it, open the butterfly and scrub it on both sides of the plate with the bottle brush and spray off all the residue until it's nice and clean. It'll run like crap when you first start it and you'll probably have to hold the throttle open a bit and rev it pretty good to clean all the excess combustibles out. If the throttle body looks ok, try spraying all over the intake with the engine idling and listen for the eng. to either lose or gain RPM. If it does, you have a vacuum leak somewhere and can pinpoint it using the carb cleaner. Leaking intake\plenum gaskets are fairly common.
Old age ain't for sissies!
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Re: I need some help with my truck.
[Re: toolman]
#2020498
01/14/11 05:10 PM
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Joined: Apr 2009
Posts: 167
andyj9881
OP
Woodsman
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OP
Woodsman
Joined: Apr 2009
Posts: 167 |
Thanks for all the tips fellas, I do think it is something with the intake. I'm going to try the suggestions you all gave. It's idling at 600-800 rpm's. It drops to below 500 rpm's when it dies. When I go to restart it, it struggles then I goose the throttle and it comes back to life and runs great. As I said before, it only does this sporadically, its not consistent.
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Re: I need some help with my truck.
[Re: pafree]
#2022972
01/15/11 06:47 AM
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Joined: Jan 2011
Posts: 46
Focusshot
Light Foot
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Light Foot
Joined: Jan 2011
Posts: 46 |
I have 4 ford trucks and have the same problem on 3 of them. Willing to bet it is your icv vavle. It is a easy fix, 2 bolts. It is located up top against the firewall. The part is around 145.00. Let me know if this fixes your problem. If this doesn't fix it you can always return it.
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Re: I need some help with my truck.
[Re: Focusshot]
#2033671
01/18/11 09:10 PM
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Joined: Oct 2010
Posts: 822
AtxCityHunter
Tracker
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Tracker
Joined: Oct 2010
Posts: 822 |
I had the same problem on my 5.9 gas 2002 all i had to do was tighten the clamps on the air tube. I of course learned this after towing it to the shop
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Re: I need some help with my truck.
[Re: AtxCityHunter]
#2099061
02/08/11 01:35 AM
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Joined: Sep 2009
Posts: 1,085
bigsky
Pro Tracker
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Pro Tracker
Joined: Sep 2009
Posts: 1,085 |
Ford has very common throttle motor problems on the 5.4. basically the sensors do not communicate correctly. what ends up happening is that you get a voltage spike and it may "stick." The throttle will either close and shut the truck off or it won't completely let off the throttle when you are coasting. swapping the motor out is very easy, although the part is about $400. Have someone that knows Dodge double check it for you. good luck
Last edited by bigsky; 02/08/11 01:36 AM.
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Re: I need some help with my truck.
[Re: bigsky]
#2104679
02/09/11 08:56 PM
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Joined: Nov 2004
Posts: 2,861
shark 25-06
Veteran Tracker
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Veteran Tracker
Joined: Nov 2004
Posts: 2,861 |
bg 44k will fix the issue. go to any napa or advanced auto and get a can, its around 20 bucks. hands down the best fuel injector cleaner around
I will get off in a little bit
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Re: I need some help with my truck.
[Re: shark 25-06]
#2108837
02/11/11 03:36 AM
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Joined: Mar 2010
Posts: 346
bmarsh9
Bird Dog
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Bird Dog
Joined: Mar 2010
Posts: 346 |
It's your IAC valve which is your idle air control valve. Injector cleaner is junk, trust me I'm a ford technician. I sell that stuff on jobs all the time and not because it works.
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Re: I need some help with my truck.
[Re: bmarsh9]
#2137395
02/23/11 02:02 AM
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Joined: Dec 2004
Posts: 94
doublejack
Outdoorsman
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Outdoorsman
Joined: Dec 2004
Posts: 94 |
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