Hot start issue with 2000 Silverado 1500

[ORVietVet]

Installed the new sensor and harness but it still does it. Doesn’t drop quite as low in RPM as it used (only drops to 400 now). Doesn’t affect drivability so I might just leave it for now. The fuel trims seemed to have fixed themselves though. They’re back at +1% for bank 1 and -.78% for bank 2.

Pull some plugs and inspect for fuel foul. Post pics.

 

[DarkNinjaSG]

Pull some plugs and inspect for fuel foul. Post pics.

Will do that tomorrow

 

[ORVietVet]

Also, when was the last time you cleaned the throttle bore?

 

[DarkNinjaSG]

Also, when was the last time you cleaned the throttle bore?

About 3 months ago. Also cleaned the maf sensor at the same time. I had to take the intake plenum off about a month ago and it looked super clean still. The intake manifold looked cleaner as well the second time a took it off.