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  #1  
Old 04-12-2011, 12:58 AM
dtmety dtmety is offline
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Location: Macomb, Michigan
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Vehicle: 2003 Dodge Ram 1500 4x4
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Default engine missing? during low speeds

Hey all,

I've had this problem for quite some time and I've tried a hundred things to solve it, but have had no luck...

The truck is a 2003 Dodge Ram 1500 5.9L V8 4dr 4WD

What happens is, normally when I start the truck after it's been sitting for awhile, and get moving, it will hesitate, and not want to move when i try to accelerate. the engine will "chug" like it's not getting gas or whatever and then all of a sudden it'll be okay and get moving. Sometimes in order to fix this, i'll have to let off the gas and keep trying that until it goes, or sometimes I just have to keep pushing it and it'll "break through" eventually (it feels like something is plugged and then it breaks through). Usually once it does it once, it doesn't do it for the rest of the drive.

So, here's the list of things I've done: (keep in mind I've only had this truck for like 6 months, just purchased it used in October 2010)

- Replaced spark plugs and wires
- Oil changes (several)
- Replaced ignition coil, rotor and distributor cap
- Replaced PCV valve
- Air filter is fine (K&N)
- Have ran Seafoam and other similar products through the gas tank to try and clean the fuel system
- Have run Seafoam through the brake booster hose into the injectors/cylinders twice now
- Have run Seafoam through the crankcase
- Replaced muffler and catalytic converter
- Replaced O2 sensors
- Cleaned throttle body with cleaner
- Replaced gas cap

ANY IDEAS what I can do still? I've thought about trying to mess with checking out the IAT sensor or the IAC motor...what do you guys think?

Last edited by dtmety; 04-12-2011 at 12:18 PM.
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Old 04-12-2011, 03:44 PM
erm
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Two things come to mind....

1. EGR valve - will cause a stumble at low speed.

2. Intake manifold gasket leak.

You haven't gotten a check engine light?
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Old 04-12-2011, 05:15 PM
dtmety dtmety is offline
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Join Date: Oct 2010
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Vehicle: 2003 Dodge Ram 1500 4x4
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Engine: 2002-2003 360ci (5.9L) Magnum V8 245hp 335lb/ft
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Default

I can check the EGR valve out...

I'm not sure about the intake manifold gasket's condition, I know I had the valve cover gasket replaced but that deals with the crankcase right?

And, unfortunately no I haven't gotten a check engine light lately. The only ones I've gotten dealt with the cat efficiency (which I replaced the cat) and the downstream O2 sensor, (which I replaced both of them).

Thanks for the reply!
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Old 04-13-2011, 02:14 PM
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RAMING IT RAMING IT is offline
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Engine off. Remove your air cleaner from the throttle body, open the butterflys and look inside with a flashlight and if the bottom(floor) of the intake manifold is dry your good to go but if it has oil then you probably need a gasket.
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