James911

Hi,
I have an Impala 350 cui with a TH 350.

Since a couple of days the tranny shifts up and down two times a second. I have the feeling that this is mostly the case when the engine is hot aftewr 10 miles.
I have changed the oil and the filter, and the oil level is correct.

What yould be the reason for my problem, what can I check?

James

performabuilt

iTrader: (25)

CHECK THE vacume line to the modulator check that its hooked up. Not collapsing and that theres no trans fluid in it.

James911

Today I checked the modulator hose. No leak and no oil inside. What is my problem?

I use Dextron III instead of Detron II, does this have any effect?

performabuilt

iTrader: (25)

No fluid type would have no affect, Do you have the PASSING GEAR "DETENT" cable hooked up maybe its to tight

James911

I removed the detend cable and I still had the problem. I think a TH 350 do not need a detend cable, because it is only necessary for downshift. Is this correct, so can I do something wrong by adjusting the detent cable?

performabuilt

iTrader: (25)

No the tv cable being unhooked would eliminate its as a possible cause, I have not run into what you have going on , Very strange