[Rideicon]

99 dodge 2500 cummins "sport" 4wd auto.
168K, completely stock besides what appears to be an in-tank transfer pump, and an apps sensor ground wire fix for the torque converter lockup issue. and a timbo apps

Fired the truck up one morning to a dead pedal.
no codes, but no pedal. Issue continued for a few days, only happened on startup, only happened sometimes. If the truck started and ran, it would run fine all day.

Got the timbo apps, installed, same issue until I did the battery disconnect/ apps reset.

got my throttle back and haven't had that issue again, but upon getting my throttle back I also got a check gauges light that lingered for about a minute and a check engine light as well.

next day scanned a P1694 "No BUS Message Received from ECM Mod"

and today I had a hard start and now got a P0217 "Decreased Eng Perf due to Eng Overheat Condition" on startup, my truck never got hot.

I've cleared the codes, and the p1694 came back in the middle of a smog check, when the guy shut it off and started it back up, failing my trucks smog check, the codes only re-appear during start up and are more often then not accompanied by 10-15 seconds of a check gauges light. All gauges display correct, in spec readings though.

From my research on the forums I have been lead to look for electrical connection issues. I tested the batteries and both test okay.
Ohm test on the terminals shows no crazy resistance issues.
figure the next step is to clean and check the connections for the ecm in the fuse box, and on the ecm itself.

Once the truck is fired up and running, I have never had any performance issues, no loss of power or throttle, gauges or lights. I hope this isn't a vp problem. :S:

 

[24VTurbo]

take the plug off the back of the VP44, clean both ends with electrical cleaner and DONT apply any type of grease. make sure your connector is not cracked or brocken and see what happens.

I had more less same problems, I would get dead pedal and "no communication between ecm and inj. pump". So I took my harness completly apart but found no issues, when i was re-installing it i heard a clicking noise as I was putting IP plug back on. I then took it off again for further inspection and found the the plug was no good. went to dodge bought a replacment. and BAM! no codes no dead pedal! I really hope your problem is this simple!

 

[Mopar1973Man]

99 dodge 2500 cummins "sport" 4wd auto.
168K, completely stock besides what appears to be an in-tank transfer pump, and an apps sensor ground wire fix for the torque converter lockup issue. and a timbo apps

Replace your alternator and restore your electrical back to stock there is no reason for hacking up the elctrical coving up a AC noise issue. Because now admitting you got a AC noise issue now everything else suffers VP44, ECM ,PCM ,ABS, etc.

Fired the truck up one morning to a dead pedal.
no codes, but no pedal. Issue continued for a few days, only happened on startup, only happened sometimes. If the truck started and ran, it would run fine all day.

ECM issue.

Got the timbo apps, installed, same issue until I did the battery disconnect/ apps reset.

got my throttle back and haven't had that issue again, but upon getting my throttle back I also got a check gauges light that lingered for about a minute and a check engine light as well.

next day scanned a P1694 "No BUS Message Received from ECM Mod"

and today I had a hard start and now got a P0217 "Decreased Eng Perf due to Eng Overheat Condition" on startup, my truck never got hot.

I've cleared the codes, and the p1694 came back in the middle of a smog check, when the guy shut it off and started it back up, failing my trucks smog check, the codes only re-appear during start up and are more often then not accompanied by 10-15 seconds of a check gauges light. All gauges display correct, in spec readings though.

From my research on the forums I have been lead to look for electrical connection issues. I tested the batteries and both test okay.
Ohm test on the terminals shows no crazy resistance issues.
figure the next step is to clean and check the connections for the ecm in the fuse box, and on the ecm itself.

Once the truck is fired up and running, I have never had any performance issues, no loss of power or throttle, gauges or lights. I hope this isn't a vp problem. :S:

I feel that you AC noise problem that you band-aided over finally bit you in the rear-end. You fixed all the noise issues on the APPS sensor to get lock up to work but now you continued to feed AC power to the ECM and fried it. I would first make sure there is clean DC power with less than 0.100 VAC voltage and then replace / barrow a working ECM and tray that on for size to see if it fixes the problem.

This is why I will not suggest modifying electric for a lock up problem because 99% of the time its a failed alternator with a bad diode.

 

[Rideicon]

Replace your alternator and restore your electrical back to stock there is no reason for hacking up the elctrical coving up a AC noise issue. Because now admitting you got a AC noise issue now everything else suffers VP44, ECM ,PCM ,ABS, etc.

ECM issue.

I feel that you AC noise problem that you band-aided over finally bit you in the rear-end. You fixed all the noise issues on the APPS sensor to get lock up to work but now you continued to feed AC power to the ECM and fried it. I would first make sure there is clean DC power with less than 0.100 VAC voltage and then replace / barrow a working ECM and tray that on for size to see if it fixes the problem.

This is why I will not suggest modifying electric for a lock up problem because 99% of the time its a failed alternator with a bad diode.

I had the alternator fail me shortly after doing the ground wire fix. and the torque converter did too, funny enough.
Both the alternator and torque converter have been replaces since doing this wire, I should go disconnect it now,

I am going to start checking connections.

 

[Mopar1973Man]

I had the alternator fail me shortly after doing the ground wire fix. and the torque converter did too, funny enough.
Both the alternator and torque converter have been replaces since doing this wire, I should go disconnect it now,

I am going to start checking connections.

Go back and re-bench the alternator I've seen re-manufactured and new alternators failing out of the box.

But I would barrow a ECM from another like model year truck and see if the problems go away if so then the ECM is for sure to blame.

 

[Rideicon]

I will get the alternator tested, but only having issues on startup, do you really thing that could have something to do with it?
pedal feels great while driving.

 

[RustyWelds]

Do these ECM's need a VIN flash from the dealer? Or they "hot swappable" meaning can go from one truck to another truck no problem?

 

[Mopar1973Man]

First off I would verify the issue by swapping in a good ECM and seeing if the problem goes away. Yes you can barrow a friends ECM for a test phase. As for the ECM it would be best if the proper ECM software was loaded for your truck.

Like you weird error code for P0217 is typically a sign of internal issues where the ECT sensor is on a open wire and the temp gauge pegs out for a short span of time and may or may not return to normal.

I'm kind of hoping you see the P0606 code which would be the for sure bet the ECM is toast.

 

[Rideicon]

I just got the p01694 code again, after cleaning all electrical connections and changing the fuel filter.

 

[Mopar1973Man]

I just got the p01694 code again, after cleaning all electrical connections and changing the fuel filter.

Here try this...
Mopar1973Man's Dodge Cummins Articles - P1694 No Bus Message Received From Companion Module

 

[Rideicon]

What kind of scanner were you running those tests on?
"Perform TEST VER-2A " ?

 

[Mopar1973Man]

What kind of scanner were you running those tests on?
"Perform TEST VER-2A " ?

Those doc's are dealer docs and typically using a DRBIII tool. (Dodge Dealer Star Scan tool). I posted them so at least you could test as much as possible yourself.

 

[Rideicon]

I do not have access to a Chrysler scanner so I am still just doing what I can.

My overhead console has power, compass works, but the mpg and engine data functions have never worked. I have the truck apart and tested continuity through the wires from the under dash plug, to the socket that plugs into the overhead console and I have no breaks in the wires. Possibly faulty overhead console, or ecu...

Or maybe another modual can cause these issues?

Really don't want to have to go to a dealer to gt this thing looked at.



Anyone in or around redding ca that wants to trade ecu and/or overhead console for a few days to see if the problem follows the moduals or if it is in the truck.

Part number on the overhead console is 55350003ae, looks like it's the same in half tons and big rams for 1999 regardless of engine, also all 2002 dakotas.

Edit; also my rear abs/speed sensor on the rear axle is out, causing a solid brake light on the dash. My gauges including speed all function perfectly, but could that be causing the lack of mpg and other info to be displayed on the overhead console?

Edit#2 I removed the overhead console and the check engine light went away. I will go down to the shop and scan it tomorrow and see if this is just a coincidence or not.

Fingers crossed.

 

[Rideicon]

So that was it guys, the overhead console module had taken a craap and it was destroying bus communication for the other modules. Unplugged the console and the check engine light cleared, the hard starting issue went away. everything runs like before all by unplugging that console.
I got it to pass smog too! yay!

stupid Chrysler bus system, lol