TCC lockup sol?

[BMFB]

So this has been an ongoing random occurrence type thing that has been happening more and more often. I will be cruising at around 60 ish (or any speed really, 45-80) and the engines rpm will jump up about 3-4 hundred rpm, and then jump back down, and then kinda do that over and over again, sometimes very quickly, then go away. Its not downshifting, I made sure by forcing it into third, and it revvs much higher than what is happening does. It is a new TCC (precision vig, single clutch) and I don't lock it up on the track. I also add the note that it doesn't ever feel like its slipping, it is a very firm grab when it locks, and it stays that way even under partial throttle going up hill. I am wondering, is this something that a bad solenoid could cause?

its also got good fluid in it, and a crazy good cooler, sits at about 175F

 

[Beavis]

Re: TCC lockup sol?

Could be a bad sol. Try manually locking it up and see if it still happens.

 

[BMFB]

Re: TCC lockup sol?

Turns out it was a bad thermostat...

I was watching my coolant temp on tunerpro and saw that it was never really making above 150F, it would dance from about 144F to 151, depending on if I was at a light or whatnot. I looked and saw that my TCC wasn't set to lock until 64*C...which is about 147F. So this explains why it would lock, and then unlock, and then cycles a few times and then not lock at all until I stopped at a light or something...I set my TCC to 44C for now, and will put in another stat here soon. Seems fixed!

 

[Beavis]

Re: TCC lockup sol?

I like 180*. Never had any issues with running too warm or too cool.

 

[BMFB]

Re: TCC lockup sol?

The 160 I had was fine but I tuned it to run that way. On a stock truck at that temp you will never warm up in the stock chips eyes, and always run rich. I just was trying to help anyone that ever had the same issue, cause it was kinda goofy