Stuttering and the TPS

[Wander]

My 97 SD 5 Speed-4.0 is stuttering slighty under acceleration. It is not consistant and does not loose full power, just a stutter for a second or two. I have not found it to occure at a certain speed not is it a regular thing. From my search it looks like it might be the thottle position sensor, if you've had this problem did a new TPS fix it, if not what worked?

 

[p m]

If it is at highway speeds, your vehicle speed sensor (VSS) is likely a culprit.

 

[Wander]

The first time I noticed it was at highway speeds-about 68mph. Then nothing for about a week or two, next time was under acceleratio an at 55(ish) mph, the most recent was at about 30. The constant seems to be while under acceleration.

 

[p m]

It is more noticeable under acceleration. VSS tells the ECU that your old Disco is about to break sound barrier, and it cuts the power for about a second or two.
My 96 D1 is on its 3rd VSS, and it will have to be replaced soon...

 

[Wander]

Where are getting the VSS's from and how hard is the replacement? I'm thinking I migth just replace both the VSS and TPS as the TPS looks pretty easy. LOL about the breaking the sound barrier comment!

 

[p m]

It's on the transfer case. Not too difficult to remove/replace, although I've never dealt with a stick shift Disco.

 

[Wander]

It happened again this morning and I was able to determin that when the stutter occures and I hit the gas the tach does not move nor can I hear the engine rev so that would lead me to think it is in the throttle so it's the TPS that is going, is this correct?

 

[msggunny]

It happened again this morning and I was able to determin that when the stutter occures and I hit the gas the tach does not move nor can I hear the engine rev so that would lead me to think it is in the throttle so it's the TPS that is going, is this correct?

Nice,

My 97 D1 5speed is doing the same thing very intermitently, along with another anoying idle issue. I just replaced the TPS, VSS, alternator, IACV. No real help, but it seems to have stopped doing it as often as it used to.

 

[Wander]

I think the only thing you have left to try is a new MAF, I've seen other thread in which that fixed it and I saw an odd mention of it being related to the thermostat being off and that affecting the computer.