" Moe " morris shouse
- Apr 1, 2017
- 5
- Joined
- Apr 1, 2017
- Messages
- 5
Ill try to make this short. so you know what I wait. I have a 2001 dakota V 6 3.9 engine. Auto trans rebuilt in 2014. w / shift kit. New engine one year ago. Less than 10,000 miles. Totally stock. After the new engine right off it started dieing at idle with the A / C on. The shop spent a lot of time trying to fix that. The idle rpm is around 700-600. if I try to step the idle speed up the computer just treys to compensate. I have read that this is common problem. I have been looking at the TPS, that has 3 wires. The TPS is feed 5 volt from the computer. And a ground. Then it has a potentiometer / or rheostat that changes the 5 volt to .8 to 4.8 to the computer depending on the throttle opening. The voltage goes up as throttle is opened more. I read about punching the spacers in the TPS block to turn it some giving a diff volt to the computer. This has helped some. I want to inject a diff volt going to the computer. I think an OPP-AMP will do what I want. That can be adjusted inside the cab. But I find many different OP-AMPS. Also I made a breakout box to check all 3 wires. It is very interesting. And found one guy on the INTERNET that put some caps across the 5 volt to the .8 to 4.8. I did this in the box. It helped make the .8-4.8 more stable. Sorry about the long post but iam very up set that the old engine ran fine and my mech cant fix the new engine if I can fix it. I want to take it back and show him how it should be. I know my fix isnt stock. But it is a FIX.