engine stumbling lost ideas.

[TylerZ281500]

the clutch fan wasnt locked before when it did it, new fans are wired to a temp sensor that does come on a little early but not immediately, then engine gets to about 120 before they come on or so my useless guages say. i found one vaccuum leak to the charocoal cannister but it didnt help any. i know the tranny fluid is nice and clean, trans was either redone or a new one swapped in but no loose plugs or anything. no additives used.

 

[jcoatswo]

Maybe try to run cleaner through the injectors or take them out and look into the sprayer holes to make sure there is no obstructions, you said you shaves the tbi, maybe got into the injectors?

One last thing you may try, but I don't know much about it... Is supposedly there is some sort of spring in the distributor that is actuated by centrifugal force?? My truck is having an issue with intermittently missing usually only on the highway. I was told that this spring piece could be bad. It may be a possibility for you because if there is such a spring in the distributor it may be reacting badly with the sudden rpm change of the transmission shifting. If anyone has more insight as to this spring I would love to be educated.

 

[TylerZ281500]

pod was taken off beforehand, we are gonna try to redo the rocker arms maybe valvtrain has a part to play.

 

[GMstrong]

putting money on a beat timing chain,or misadjusted valves.

 

[TylerZ281500]

well im doing a cam chain swap so well see