i'm the original owner of this 2000 dakota 4.7 4x4 qaud cab. the problem is it started stalling at idle or slowing down for a stop. P0108 code came up so i tested the MAP sensor. the feed wire was getting 5v the ground tested good and the signal wire tested good. in do own a vacuum pump the voltage droped from 4.7V to 1.2V as i pulled vacuum. i cleaned the port and the O-ring looked good so i put it back together. there was some improvement but it continues to stall. i have checked for vacuum leaks. anyone have ideas. thanks in advance. help!

 

Clean your IAC valve and replace the TPS. Or replace both.

Can't remember where I saw this but... the TPS is a sealed unit. Someone drilled holes in it, shot electric contact cleaner in and shook it around, allowed it to dry, then sealed up the holes with gasket maker. It worked for them.

 

Test the TPS with an analog voltage meter as you throttle up the needle on the voltage meter should move up with it smoothly if it spikes up or down dramatically the TPS is bad.

 

When I tested mine, it tested fine but the problems I was having disappeared immediately after replacing it. Truck idles nice and steady now too.

 

thank you guys i will clean and test both the IAC & TPS when I get an opportunity and I will let you know how it works out. again Thank You!

 

well i cleaned the IAC checked the TPS. they seemed to be working as they should and the truck would still stall so i went ahead and ordered a MAP sensor installed two days ago and she has been running like a champ. i'll keep my fingers crossed