Way Outta Control
Join Date: Sep 1999
Location: The Palouse
Thanked 3 Times in 3 Posts
Re: 98 TJ Check Engine Light - problems
1. You can test the resistance.
2. All the TPS is is a sealed variable resistor.
3. Using an analog meter is best,
4. Check the TPS resistance,
5. And how smoothly the wiper in the variable resistor is working.
6. If the transition is not smooth, there's a problem.
7. If it's smooth, likely it's OK.