poor running

[DieselLady]

This truck has had the electronic throttle valve light come on while all this is happening. The strange part is that no one has actually address the electronic throttle valve. That would be the butterfly valve inside of the intake. All of these symptoms can be explained by that little valve slamming shut during heavy acceleration. And then sticking shut. I'll be when the valve flapper is finally removed this whole problem will go away. ")

 

[bigblock_doc]

Went to the dealer last Wed. Now they say its the EGR. Part on the way. Truck will be in Monday. Also had some kind of

code for the acc. pedal and brake switch, again. They have replaced these items and still coding out. I have to let them

do their thing brfore I take out the butterfly. I filed a claim with Chrysler and got a case number. Hope this get things

rolling a little faster. I don't like turning down work.

 

[Bob4x4]

If you pull the fender liner off you can pull the cac hose off at the flow valve and watch its operation directly without using a mirror. It should snap shut at shut down then reopen smoothly. Of course at that time you can also inspect it for gumming up just like the gassers do but at a faster pace.

 

[Bob4x4]

I will do while here in FL. Dealer claims that there should not be a soot problem since I'm loaded 99% of the time, on the highway. How about removing the

gear drive from the motor attached to the butterfly? I removed the wrong plug earlier. Ran kinda poor, derate? Will keep you imformed.

Thanks

Being loaded does not stop soot production-it just keeps the exhaust hot to aid in regen

 

[bigblock_doc]

Sometimes I listen to the dealer, walk away and shake my head.

 

[mfurrh55]

This truck has had the electronic throttle valve light come on while all this is happening. The strange part is that no one has actually address the electronic throttle valve. That would be the butterfly valve inside of the intake. All of these symptoms can be explained by that little valve slamming shut during heavy acceleration. And then sticking shut. I'll be when the valve flapper is finally removed this whole problem will go away. ")

You can lead a horse to water!!!!!!!!

 

[bigblock_doc]

He'll probably drown

 

[DieselLady]

So when exactly were you going to address the throttle valve/ butterfly valve? Seems like you have the answer and keep avoiding it!

 

[sag2]

The throttle valve is one of the only parts on the truck that does not give a code if it is out of position. Most other parts will give a rationality fault (not where I'm supposed to be, or does not agree with another similar sensor) if the controller does not like what it sees. When it does stick shut, the truck will usually die unless the EGR is open at the time.
To test, I jam a piece of wood to hold the blade open. Tie a piece of dental floss through a hole in the wood and run it outside the hose and tie it off. In the off chance it tries to get away and head for the grid heater it won't get very far.

 

[bigblock_doc]

Just trying not to void my warranty

 

[DieselLady]

Lot of good a warranty is if they can't even figure this one out. I don't think I would want these people turning a wrench on my $58k truck. You can test it yourself buy following 4x4 bobs advice. He works for a dealer and knows what to do to test it. All the signs point to the tv valve slamming shut and sticking! Geezzzzz!!frustrating!!!

 

[bigblock_doc]

Well, they replaced the EGR valve. Gone 400 miles and so far so good. Going on a long one tomorrow, we'll see.

 

[DieselLady]

Hummm, I place my bet, 200 miles in and it sticks again. Well unless they changed the throttle valve too. ")

 

[Alan Reagan]

Well, they replaced the EGR valve. Gone 400 miles and so far so good. Going on a long one tomorrow, we'll see.

I was able to duplicate mine in neutral. Rev the engine to 2000 and hold it for several seconds. If no miss, go to 2500 and hold it for a few seconds. If no miss, go to 2800, then 3000 rpms. Mine was temperature sensitive and that's the reason for the various rpms. On warmer days it would do it at the lower rpms. Colder days, I had to go higher. That narrowed it to the fan clutch and the torque converter for the technician.