turbomrk
.020 Over
- Joined
- Sep 10, 2020
- Messages
- 23
- Ride
- Rocket 3 Roadster
Ok all of you talented troubleshooters here's one for you. Friend of mine's R3Roadster would not idle. So not knowing any better, he adjusted the throttle stop screw, located where the cables attach at the throttle body! He got it to idle but is was a bouncing idle, this is after he got a MR12 Race Gas tune from Bob Carpenter. Put regular fuel in it after the MR12 ran out, and that's when the idle issue started. I checked it with TuneECU and the TPS and ISCV were off, so I adjusted them to spec. Idled smooth and steady, but now just off idle at 1100 rpm it's bouncing. His idle is set at around 950 rpm, runs like crap at 1100 then is fine past that range. We checked my adjustment on my Roadster and reset his throttle adjustment to match mine. Reset ISCV and TPS to spec Synchronized throttle bodies and no change. Is it possible that his TPS is bad even though there are no trouble codes? He has no 02 Sensor and it's switched off. That's all the information I have to give. I'm thinking the manual idle adjustment threw off the MAP setting, and the MAP sensor may not like the pressure reading. HELP!