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2018 Grom idle/running issues

248 Views 4 Replies 3 Participants Last post by  joehill92
I got bad fuel 2 times in the last month first time I flushed everything, put new fuel, and was good to go.

This time I keep having issues with it stalling while idling and while under load. The rpms are erratic when throttle is held in any position. Then will slowly stall out and die

Bike will start normal and slowly stall out at idle. Once it's warmed up it seems even worse. If I unplug the tps and start the bike it'll idle perfectly forever. Adjusting the a/f screw does nothing if the TPS is plugged in. If the TPS is unplugged the a/f screw changes the idle like it should. New spark plug, flushed fuel system multiple times, pump turns on and flows, injector sprays, battery charged..
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Reset ECU & Recalibrate TPS
Compliments of Hard Racing. He shows an OG, but SF is the same....
I forgot to add I've done that multiple times. Each time I flushed it or anything like that.
I forgot to add I've done that multiple times. Each time I flushed it or anything like that.
Could be a bad TPS. I had one go bad on my 2017......
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