jr.47417

i have a 1992 s 10 blazer with 215k on it and am having a problem with when i am in over 40 mph and trying to maintain speed it shakes before downshift. At first i thought it was u joints had them replaced, and since then i have had the filter changed a tranny flushed. NO CHANGE \\ WHAT NOW????

MT-2500

Shaking before any down shift or coming out of lockup points to a engine miss/engine not running right.

Make sure the tune up and secandary ign is good.

Any check engine lights on or codes?

When was last good tune up?

__________________
Remember proper testing gives us the answer to many problems.
MT

jr.47417

the last tune up was 15 k ago, new plugs, wires, dist-cap, ign coil, ign module. some one mentioned to me the throttle valve cable might need adjustment for the kick down on the tranny. what do you think?

MT-2500

Post no 2 is my thinking.

What are upshift speeds in MPH on normal take off.
Do you have kickdown or passing gear?

__________________
Remember proper testing gives us the answer to many problems.
MT