|
Re: ****ing at high RPM
Quote:
Originally Posted by Dead Parrot
From your description, sounds like you have a TH400.
Choke light on: Make sure the choke isn't stuck. Stuck choke can cause a way too rich condition which plays with vacuum and thus impact shift points.
Trans: Verify that the trans fluid level is correct. Low level can cause shifting issues.
One quick test - take a clean hose, pull off existing hose from modulator, attach test hose to modulator, suck on hose. If it keeps vacuum, modulator might be good. If it doesn't, modulator has leak and needs replacing.
|
My truck has electrical choke with direct 12v, but still the choke light is on.
__________________
1972 GMC Sierra C2500, V8-350
1986 GMC Sierra C2500, V8-454
1986 GMC Sierra C2500, V8-LS1
1986 GMC Sierra K2500, V8-350
1987 GMC Sierra R3500, V8-454
1997 GMC Sierra K2500, V8-454
|