throttle shafts probably need bushings
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throttle shafts probably need bushings
Base idle speed, coolant temp, AC, transmission gear, and engine cranking idle air all factor into the "idle required" rpm
Just throwing this out there as I did not notice it mentioned before, but is the coolant temp on the scanner reading correctly? As you probably know the dash gauge has a separate sender than the ECU. Does it flood easy when starting it?
There was another forum post with a similar issue and the fix turned out to be the IAC was wired wrong. Idk how that mysteriously happens if no one messed with the wires...
Battery volts could be a little concerning. Not 100% if TBI has injector offsets vs batt volts and how that would affect idle quality??? That 53% throttle looks unusual too.
I am late to the game, was truck running fine and then just started idling high?
Did you do any work to it and then it started?
Guys here is a left field question, if he cooked his O2 sensor, could/would it cause high idle?
A faulty temp sensor that goes to the ecm can play havoc on idle rpm’s.
Yes it is coolant reads at 195 on the scanner and it’s a brand new ac delco sensor
Trucks always idle around 1k when i first bought it but i didn’t care because inwas going to rebuild the throttle body so i ended up rebuilding it about a year later and it stills idle the same
Yeah I’m lost this thing has be pulling my hair
It’s brand new ac Delco sensor and my scanner shows the computer is reading 195 degrees
I havent messed with the wiring it’s still the factory plug
Please elaborate on this, where can i get the bushings and it is hard to replace? How can i determine if i even need bushings!