Engine/Transmission (1994 - 1998) Rough return to idle

[CaseySmith]

My truck since I bought it, about a month ago, has always had a small rev after the motorwinds down to idle... . after depressing the clutch. It is especially bad when the motor is cold. Could this somehow be related to the 4GSK or plate? Any other ideas? Thanks

 

[Forrest]

Is it just a little "bump" up in rpm just before idle? Mine does that. I was told it was gov spring bounce. I've got the 4k springs too.

 

[CaseySmith]

Is it anything to be worried about?

 

[Forrest]

Jeez I hope not. I just took it as early spring fatigue. Mine are about 5 yrs old. It didn't do that when they were new.

 

[JJW_ND]

4GSK in a 215 motor

My 96 5sp does the same thing. Almost kills the motor when temps go below zero.



I would image if one had the injection pump balanced this abnormtily could be "tuned" out. I don't think one can tune the GSK's to get this out (given the coarse adjusment of the keepers). Other then the bouce, mine runs very smooth.



jjw

ND

 

[JohnE]

Worry? No

The idle surge or throttle flutter is the only known drawback to governor springs.