Engine/Transmission (1998.5 - 2002) No power, dead pedal...

[SRadke]

2000 model ETH. Randomly loosing power, like... won't get out of it's own way. Comes and goes at any rpm or pedal position, no real pattern to it. Truck is stock and when it runs it runs fine. This started about 2 months ago, happening once a week or so. It's been getting worse and now it's nearly every time you drive it. No error codes that will show on the odometer.



I replaced the MAP sensor to no avail, what's wrong with this thing? Who's seen this before? Ideas please..... Thanks!



-Scott

 

[DavidC]

Sounds like the throttle position sensor. Check and clean connections as this part is pricey. Also there are various threads on this. Search for tps and/or apps.



Dave

 

[turbo torque]

Ditto what Dave said, My 98. 5 did the same thing, till I had to idle home, no pedal at all. I cleaned all grounds,recalibrated the APPS (TPS) and still nothing.



Put on new APPS and everything is fine.

 

[Murle]

Sounds like the APPS. Mine did the same..... no way to repair... . just replace... easy job just a little pricey. I think my cost a bout 275. 00 direct from cummins

 

[rweis]

Did anyone do the voltage recalibration of the TPS?



Measure at C1,

Get into TPS see what the tag says,

Rotate TPS to get tag voltage at C1.



Bob Weis

 

[SRadke]

I assume the APPS is located on the end of the throttle cable but what is the cal procedure?

 

[Gregg Mig]

Could be your vp 44 mine did the same thing, found a trouble code po 216,that was caused by low lift pump pressure,truck is at the dealer now for both pump replacements.

 

[JOdell]

my truck (2001) did the same thing and it was the injector pump. -Jason

 

[paulb]

I assume the APPS is located on the end of the throttle cable but what is the cal procedure?

What Bob (rweis) said above. That would be my vote to try as well.



Paul

 

[Gregg Mig]

Scott, run your trouble codes,, turn the key on and off 2 times fast then one more time leave it on and your codes will come up on your odometer. You will probably get a po216 which means your vp is going to die.

 

[SRadke]

No codes on the odometer, tried that.



I'm a little unclear as to Bob's instructions but I'll pull it apart to get a look and see if it makes any more sense to me.

 

[paulb]

No codes on the odometer, tried that.



I'm a little unclear as to Bob's instructions but I'll pull it apart to get a look and see if it makes any more sense to me.

There is a tag on the APPS that lists what the voltage should be when adjusting the APPS. The APPS rotates, on 2 (if I remember correctly) screws. Measure the voltage on the C1 wire (sensor return), and then loosen the screws and rotate the APPS until the voltage matches what is on the sticker. Tighten screws, and recheck voltage.



One other thing... You might run it by Rip's and have Robert scan it. Sometimes the codes don't display in the odometer, and will show up on the scanner. They have one of those niffty (tech term ) Snapon scanners. I know some people have had 0216 codes (VP44 code), that only shows on the scanner.



Paul

 

[SRadke]

Thanks Paul, I'll play with a bit and see what happens.

 

[JStrosnider]

My 02 did the same thing... So I changed the fuel filter helped for a while and then it came back. Step on the throttle and it would fall flat on it's face. When it would die like that stomping the throttle several times in a row wouldn't chang anything. . Started out intermittenly, then went to about 2-3 times a week, then about every other time you hit the throttle. Ended up being a dead lift pump that took out the vp injection pump. . Dealer replaced both all is good now. . Check your codes and your fuel pressure that will give you an idea of where to start...

 

[rweis]

The Smarty will check codes also and the Smarty book has all the code numbers and a short description.



The reason I mentioned cal the APPS is my APPS is getting squirley. Went to DTT web site and got the procedure there. Symptoms were, low voltage, really soft ETC transmission shifts, sometimes in and out of O/D for no reason. Then I charged up the batts really well and the good firm shifts came back and the O/D searching stopped.



Batts down problems, batts up no problems. Went to DTT site and that procedure was recommended.



Cheaper to try than buy a new APPS right off.



The impression I get is it recalibrates the voltage EXPECTED at C1 with the ACTUAL output of the APPS.



There is also a thread in the last few days here that has a CUMMINS procedure and goes something like, do a procedure and if the voltage is less than xxxx replace the APPS. It goes through about 6 different test that are either pass or replace. Then if the APPS passes those 6 test then recalibrate the APPS mounting rotation (tag voltage expected at C1) to what is actually at C1.



Bob Weis

 

[BradyWilliams]

Only a DRB3 analyzer will read the cummins side of the ECM. The Snapon one will show the Mopar side and you will read some codes. Look for some one that has a DRB3. We have very good prices on pumps if you need one. Thanks

 

[SRadke]

Just pulled the codes at Autozone. All he gave me was:



P0261 The PCM has determined the voltage signal for the number 1 cylinder injector is too low for current engine operating conditions.



The service manual doesn't show this code. Jumps from 0257 to 0300. Any opinions?



-Scott

 

[DavidC]

Just pulled the codes at Autozone. All he gave me was:



P0261 The PCM has determined the voltage signal for the number 1 cylinder injector is too low for current engine operating conditions.



The service manual doesn't show this code. Jumps from 0257 to 0300. Any opinions?



-Scott

Here is a link for codes. Being you have mechanical injectors I do not know what to tell you.

http://www.obdiicsu.com/Docs/DTC/DTCData.html



Dave

 

[nps]

Their reader must be bad, the operator doesn't know how to use it, or you took in your '06 by mistake. :-laf

 

[SRadke]

Their reader must be bad, the operator doesn't know how to use it, or you took in your '06 by mistake. :-laf

I'm pretty sure I got that last part right but you could have nailed the first two :-laf



The list from the link above lists 0261 as "Cylinder 1 injector circut low". That sounds about like what he said. Doesn't much help with solving the problem though.