david-b
15+ Year Contributor
- 562
- 2
- Aug 15, 2005
-
Chicago,
Illinois
I finally got the car running again and having some issues with MegaSquirt. I've had this problem before but not finding a fix.
I calibrate the TPS, and when the car is ON (motor off), it shows 0 at closed and 100% at WOT. But when the motor is running, it's showing ~10% at idle and causing the rpm to sit about 1300rpm. When I rev, it revs fine, but coming back down takes a while due to MS still thinking the throttle is open
The TPS is still entirely hooked up to the stock ECU. I have the 5vref wire hooked to the middle pin on the TPS. Should I fully disconnect the TPS from the stock ECU and wire up a ground from MS directly to it? The flapper adjustment screw is backed all the way out, and plate is fully closed, there is no tension on the throttle cable at idle.
Any ideas? Thanks
I calibrate the TPS, and when the car is ON (motor off), it shows 0 at closed and 100% at WOT. But when the motor is running, it's showing ~10% at idle and causing the rpm to sit about 1300rpm. When I rev, it revs fine, but coming back down takes a while due to MS still thinking the throttle is open
The TPS is still entirely hooked up to the stock ECU. I have the 5vref wire hooked to the middle pin on the TPS. Should I fully disconnect the TPS from the stock ECU and wire up a ground from MS directly to it? The flapper adjustment screw is backed all the way out, and plate is fully closed, there is no tension on the throttle cable at idle.
Any ideas? Thanks