tps-map replace #'s curing shudder

[GGades]

I'm having the same shudder problem as many others are. Right now I am using the UFM comp from Diesel Dynamics and their stage 3 injectors. I had a Banks Power Pack before that and with the injectors never once did the truck act up and carry on like it does now. Problem is the worst at around 18-25 psi boost at partial throttle. I've read other posts about replacing map and tps sensors and am going to try, but according to my friendly Dodge dealer I don't have either one of these on my truck- we all know better! Can anyone help with part numbers? Also are the two sensors just replaceable or is there any kind of calibration involved? Somebody out there has to know what the problem is with our trucks, please help us! Not really in the mood to buy a spare inj. pump either. Also have plenty of fuel, guage in cab shows 10 psi wot at inj. inlet new filter and Ray's banjos.

 

[Jetpilot]

GGades,



Sorry I don't have the #'s for you but I would like to hear how this works out... If it cures your problem I think I will try the same thing.



Doug

 

[GGades]

jetpilot

doyou have the same symptoms? DD told me they have not heard of a problem like mine before. Still looking for part numbers, or a cure. I'm just a 172 pilot-- gotta start somewhere.

 

[Blackdog]

I ordered my new MAP sensor today, I'm not gonna say how much the thing is b/c I hate being reminded of it. If my local dealer wasnt such a pain in the butt to get my truck in and get it on the computer I could probly get it replaced under warranty but they think I have to have the truck over there 4 hrs before they close and it's kinda hard when u gotta work. So I recon I'm just gonna grit my teeth and pay for the stupid thing. I just pray that it cures my troubles as well as everyone elses. The problem is pretty much pointing right at the MAP sensor b/c I have great fuel pressure and all of my connections on my boxes are good so if it's not that then i'm not sure where I'll go from there. Oh, when I talked to my dealer the Dodge computer didnt have it as a Manifold Absolute Pressure sensor, it was just classified as a Turbo Boost sensor for those of you who have had trouble finding it. I forget the part number on it, but when I gave them the number it didnt do much good b/c the Dodge server was down or somthing today around here. Hope this helps.

 

[Bigsaint]

The number for the 2001 MAP sensor is 5017791-AA. I believe that a member here did purchase one from Cummins for less, but I was able to get mine for $109. 12 with a discount that was given to a friend of mine that runs a local garage, when he ordered the part through DC. List is $136. 40, according to my invoice. I ended up curing my problem with a dab of dielectric grease on the connections, so I still have a spare sitting in the box.



Scott W.

 

[R Anestis]

What's this now?

Tell me PLEASE:

What is this poblem everyone's been having? I just bought a PE Comp, and I haven't gotten it to work right yet. Out of nowhere, when trying to accelerate, the truck will seem to forget you have your foot on the go pedal and just die momentarily. I wouldn't call it a shudder. When it comes back, the RPM's are much lower and you have to let off the pedal to get it going again. The only conclusion I have been able to come up with is a bad MAP sensor or TPsensor. I don't have guages yet, but I'm running on a nearly new lift pump. Also: it doesn't act like it's losing fuel, just like it loses its brain momentarily. So tell me, is this the same problem as everyone else is having? And if so, does anyone have any news on wether the problem was fixed after changing these sensors?



I also have one other question: The "check engine light" has been coming on because the obvious tripping of fault codes when the "shudder" takes place. The problem is it goes off after three or four start cycles. Sometimes even just minutes after it came on while the engine is still running. So, would this still be a bad sensor or something worse like an ECM on the fritz? I was always under the impression that once a fault code has been tripped, it takes thirty start cycles to clear it. Or disconnecting the batteries for 1/2 hour.



Thanks for any help. I'm itching to put my Comp back on. :{Oo.

-Ron

 

[Bigsaint]

any codes ???

Ron, not sure on your truck, but on mine I can get the codes by turning the igniton on/off 3 times, leave it on the last time and read the codes on the odometer. I wouldn't rule out the lift pump as that box is calling for a good amount of fuel, but the one and only stumble I had didn't set a code/check engine light and was due to low FP. Guessing that you already double checked all connections, especially at the pump wire tap for the Comp. ? I would also do as I stated above and put some dielectric grease on the map connections to be sure of a good contact with the three spades. You can also use the same grease on the tap for the VP44. See if you can get those codes and report back to us.



Scott W.

 

[GGades]

R Anestis

I ve got the exact same problem as you have I go in tomorrow for a new tps, map and iat sensors. Pedal would go dead just like you stated. I dont't know which codes were set, dealer just told me the tps and map were out of voltage spec. Has to be a problem with our comp box or the ecm or both. I'll post tomorrow with results.

 

[R Anestis]

GGades: Now I know I'm not the only one! I'm wondering: How did you convince your "Friendly Dodge Dealer" that the sensors needed changed? I know what a bunch of knuckleheads they can be. I don't want to say the wrong thing and say Bye-Bye to my warranty.



Bigsaint: I did check all the connections over and over with the exception of the pump wire. I don't want to hook that one up 'til I get my guages. One thing is for sure, when I do get to put the Comp back on, I'll put some dielectric grease on all the connections under the hood. In the mean time I'll see if can get the code #'s and let you know. I'm anxiosly waiting to hear if GGades problem goes away after he gets his new sensors.



Thanks guys,

-Ron

 

[R Anestis]

Got it!

Bigsaint: the code # is 1693.

-Ron

 

[Bigsaint]

Ron, I had the same code the 2nd go around with the check engine light, the first time it threw a 1693 and 0237. I couldn't clear the check engine light the second time ( 1693 code) until I greased the spades on the map plug, then it went away and I haven't seen it since. Hope it works for you.





Forgot to add... before you grease the spades on the map plug, disconnect the neg. terminals from both batteries for about 30 minutes, if you re-connect and you still have a check engine light, then my guess would be the map plug itself. You won't set a code if you unplug the Map with the batteries connected, unless you are keyed on when you disconnect the Map plug. Hope this makes sense, if you disconnect the batteries for a short while it should clear the check engine light if you corrected the problem, the codes will remain unless they are cleared with a scan tool.

Scott W.

 

[GGades]

Had both the tps and map replaced today,problem seems to be gone and everything works well (fingers crossed)

 

[R Anestis]

GGades: Keep us posted as to whether the "fix" continues to work. Mine would come and go seemingly at will.

Thanks and good luck, -Ron

 

[R Anestis]

Bigsaint:

When you say dielectric grease, are you referring to regular old silcone grease used in electrical applications; or is there something better?

-Ron

 

[Amianthus]

TPS soon for me too.

I have the same issue with the "stumble". It acts like it misfires. But only under about 75% accellerator position, as measured by my foot. A Cummins mechanic that I know told me that he had the same thing and replaced the TPS sensor and the problem went away. I fugured, what the heck. So I've got one on it's way. If it works, it'll be a $40 well spent. If not, on to the MAP sensor. I'll have to let you know.

 

[KatDiesel]

Re: TPS soon for me too.

Originally posted by Amianthus

So I've got one on it's way. If it works, it'll be a $40 well spent.

TPS is only $40??? Isn't the TPS called the APPS now? and I thought it was well over $200? Just curious.

 

[Amianthus]

Yup.

That's what the price is from my Cummins Dealer. I just confirmed it. Checked it against the ESN. At least, they did. Got a thermostat coming in too. $15 for that. Both part numbers checked against the part numbers on Fritz's site. With one exception. The thermostat they have listed is the same one for the 2000 that Fritz has listed. Not the 1999 that I have. But it should fit. I'm not worried. If the invoice says anything diefferent, I'll let you know.

 

[GGades]

Is the 99 different from the 01? My 01 had to replace the entire bellcrank assembly at around $300 per slice

 

[KWIKKURT]

Ron,



I had the exact same symptoms after I power washed the Engine. It would shut down and I would have to let off the throttle for it to come back. Then as I would accelerate again it would shut off. #ad
I finnaly drove it slow and as it "Dryed out" it went away. I am going to "Grease" all the connections and I think it will not happen again.

 

[rotohead]

APPS for $40???

I can't believe that is the right price or same part. I just ordered a APPS for a 24v from Cummins Intermountain in Reno and the best price I could get was $364. I've noticed price differences from east coast to west coast with Cummins but that's a huge spread under any circumstance.

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