Join Date: Sep 2006
Feedback Score: 0 reviews
high idle issues with sct livewire + dpf delete
I just did a dpf delete and got the latest livewire 9625OR tuner. Before I got it, the sales guy mentioned it could have idleing issues using a canned tune if I deleted the EGT sensors. Since I was just planning on running the canned tunes I bought the dpf exhause that has the sensor bungs. Got everything installed and it idles high. Tried different tunes and the same problem. Called SCT and the tech guy wasn't much help other than to say the pcm uses imput from the egt sensors for idle speed. He couldn't explain why it was idling high if they were installed. I double checked in the tuner that I did NOT select egt sensors deleted. The truck was running fine with the dpf in place, no check engine lights, etc.. What I did find upon monitoring all the EGT sensors was that the 3rd sensor was reading super high compaired to all the others, 1400 degrees while the others were around 250. I was thinking this could be the problem... I unplugged that sensor just to see what would happen and the tuner is still showing it reading 1400 degrees with it unplugged! Could there be a wiring short somwhere? Or the other possibility I thought of was the pcm reading a max temp like 1400 if the circuit is open like being unplugged, and possibly the sensor is just totally bad? I didn't bend it all up or smash it getting it out...
any suggestions would be great, the high idle thing is pretty annoying at stoplights and parking lots!
2002 F250 Powerstroke Crew Cab Lariat 4wd auto, Bone stock for now...
'00 Excursion Limited, 4" turbo back, Dura-Lite filter/intake, 20% tint all around.. The highway cruiser!