Need help identifing where my problem may lie.
1988 F150 Custom, 302 V8 4X4 Manual tranny
Once the engine has warmed up I have an intermitant problem (more often than not) with the engine reving high when I change gears. When I engage the clutch the engine will rev upwards of 2500 rpm. for aprox 3-5 seconds then come back down to normal.
I changed the throttle cable a while back and it seemed to fix the problem for a couple of months but now the problem is back.
Has anyone had a similar problem ?? and if so what was the fix.
Any help would be apreciated.

 

Could be a IAC or sticking throttle cable.

Take some WD40 and lube everything good.

later,
Dustin

 

Thanks for the sugestions.
Excuse my ignorance but what is IAC

 

WD 40 is fine, but when it comes to cable lines I would go with a good lubricating grease.

 

IAC- Idle air control.

Controls the amount of air getting in at idle.....therfore controling idle speed.

later,
Dustin