Engine starts but no power

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Bob Fay - 25 Dec 2005 23:10 GMT

My Dodge Van has an intermittent problem. I start the engine and then try to
move and the engine does not respond to the accelerator. It is a dodge 3500
with a V8 2001 model. When I restart the engine it will perform in a normal
manner. Any ideas?

Bob

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Max Dodge - 25 Dec 2005 23:25 GMT

That may be a "fly by wire" throttle. Your pedal "talks" to the PCM, which
in turn opens the throttle. The two may not be communicating consistantly.
If you have traction control, that may be part of the problem.

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Max

"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

> My Dodge Van has an intermittent problem. I start the engine and then try
> to move and the engine does not respond to the accelerator. It is a dodge
> 3500 with a V8 2001 model. When I restart the engine it will perform in a
> normal manner. Any ideas?
>
> Bob

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miles - 25 Dec 2005 23:26 GMT

> That may be a "fly by wire" throttle. Your pedal "talks" to the PCM, which
> in turn opens the throttle. The two may not be communicating consistantly.
> If you have traction control, that may be part of the problem.

Did Dodge have that in 2001? I don't think my 2001 Ram is fly by wire.
My 2004 Durango is.

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Max Dodge - 26 Dec 2005 01:08 GMT

My 2000 Ram is.

Of course, the TPS would be another place to start, and really, getting the
codes via the KO/KO 3x method would be the best place to start.

Must be the Eggnog.....

Signature

Max

"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

>> That may be a "fly by wire" throttle. Your pedal "talks" to the PCM,
>> which in turn opens the throttle. The two may not be communicating
[quoted text clipped - 3 lines]
> Did Dodge have that in 2001? I don't think my 2001 Ram is fly by wire. My
> 2004 Durango is.

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Tom Lawrence - 26 Dec 2005 01:33 GMT

> My 2000 Ram is.

That's because your truck is, well... different :) And even so, you still
have a cable going from your pedal to your APPS - just as I do.
Cummins-powered trucks didn't go true "DBW" until '05 (hence the funky
little TV motor on the tranny, instead of the cable-actuated valve)

The 318/360 are always mechanically-controlled throttles, as they have an
actual throttle on them.

> Of course, the TPS would be another place to start, and really, getting
> the codes via the KO/KO 3x method would be the best place to start.

True - any stored codes might be helpful. I would think something other
than a TPS, though - even if the TPS was bad, within a short period of time
(sub-second), the MAP sensor should detect the higher pressure caused by
opening up the throttle plates, and cause the PCM to adjust the fuel
accordingly.

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