RPM Surge

[krutkosky]

I've read some threads on this but I've never seen an absolute fix. When I'm driving, I get a 2-300 rpm surge occasionally - it's especially noticeable while on cruise control, but I also happens without and while even accelerating. I've already cleaned the TB but this made no difference. I'm taking my truck in for service at the dealer this week and I wanted some other ideas? TPS? IAT sensor?

Thanks!

[Dakota00]

When you were cleaning the TB, did you also clean the IAC motor next to the TPS?? If that doesn't work you can try replacing the TPS sensor.

[troy1]

output speed sensor on the trans 99 model year had some issues