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Duckdub85 10-16-2012 04:10 PM

New guy here and could use some advice
First off hello to everyone. I have had my truck in the shop off and on nw for the better part of a year with the same problem. (or so I think). Now I can do a lot of work myself, but engine stuff isnt really my thing. My truck feels as though it misfires randomly. What I mean by that is when I start it up, it runs like crap, but after it warms up it seems to run ok. Now, when I get up into overdrive and cruise down the road, it gets worse and does it a lot worse. Also, when I try and back out of a parking spot, that it feels like the whole truck kinda shimmies until you give it some gas.

I have replaced plugs, wires, cap, rotor. Also thermostat and water pump, but those are different reasons. I dont know what it could be and Im starting to get really irritated. Sorry, Im kinda venting here. An help would be greatly appreciated. Thanks

ray5.9rt 10-18-2012 01:42 AM

HI : let me tell you that you should try and change you TPS (THROTTLE POSITION SWITCH). I lost a transmission in my durango do to a bad TPS.. it's cheep and right on the side of the throttle body....hope this helps......RAY....

RyanLee25 10-17-2013 09:06 AM

Any update on this post? My truck is doing the same thing.

RogerRamJet 10-17-2013 09:52 AM

I know some folks think it's snake oil, but run a $10 can of Seafoam through your gas tank and intake before you go spending hundreds, if not thousands, of dollars throwing parts at it. A clean intake will do wonders for your performance.

Gen1dak 10-24-2013 01:16 AM

Intake plenum gasket

Gen1dak 10-24-2013 01:19 AM

That's where I'd start.

Simple guy 11-27-2013 11:19 PM

mine used to run like this, then one day it wouldn't start unless i held the pedal down some, cleaned the TB where the IAC inserts and replaced it. fired right up.

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