I see people talking about the TPS replacement for surges while under cruise control. What about when not under cruise control? Yesterday (2/23) the wife and I went to Champaign, IL for a concert (Martina Mcbride, great concert) as we were getting closer the engine started to surge once in a while 100 to 200 rpm between 65 to 70 mph. Then we hit the snow and the we slowed down because of the weather (they ended up with about 4 inches and there were many vehciles off the road). No further surges on Friday, then today on the drive back it happened again between 65 & 70 mph, where the engine would surge 100 to 200 rpm. Again not on cruise control and it doesn't happen at other speeds.


Any thoughts/comments would be appreciated. Vehcile 2003 Durango, 5.9L.

 

It may still be the TPS. Not expensive to change out, so give it a try. At times, the TPS sensor can be slightly messed up where your PCM will not pick up the error and not report it. That is what happened with me and the dealer spent more than a month trying to troubleshoot it.

 

It still is the TPS. My got bad enough that it did the 100-200 rpm surge while under normal throttle, not cruise. I never got a check engine light, but my guy that scanned it said it was out of limits.

It's a cheap fix, and I'm 99 percent sure it's your problem. It seems to be a problem on the Durango overall.

 

update: had the TPS replaced (also did belt at the same time) and it is running fine now.


Thanks for the feedback and help.

 

Doesn't your state have a lemon law? Many states have laws on the books that cover these issues. When you have to bring your vehicle in for the same repair three times in a given period, the dealer is supposed to replace the vehicle. your state may vary.

 

This is my first day on this forum and I am already glad I joined.
I started looking because my blower motor wasn't working and found the "resistor" answer. That rocks.
Bouncing around more I found this thread about the TPS and RPM surges. I tow You know the horror stories about how bad MOPAR trannies are. Well this is exactly what is going on with my 01 gas guzzler 4.7L.
I guess I will pick up a TPS with my blower motor resistor tomorrow.
I saw someone say that they got their TPS from NAPA, any thoughts on Mopar versus after market for this part?

 

I would just set the voltage to .74. check the 2dak forums for tps mod. I installed mine and my: ran sluggish. I set the voltage to .74 man that thing flies like a rocket now. Before I set it the tps was reading .43 so there is a diff

 

Here is the link for the modification.

http://www.v8performance.com/tipsandtricks.htm#TPS_Mod

 

This thread reminded me of user "rockadaous" in NC. I know he was in the service and I haven't seen him anywhere online in a year+. Anyone elsewhere? Hope he's okay (Afgan/Iraq/etc)

IndyD

 

I haven't seen him either????