Brand new TCI Streetfighter, brand new 390. Got everything installed and hooked up and everything seemed to be working properly. The transmission shifted hard, fast and firm just like I expected it to. Its got maybe 40-50 miles on it total. Today I went for a drive and I noticed that the transmission was acting weird, not instantly downshifting when i shifted it manually, and 'slipping' ....when I came to a stop it would act as if it was in Neutral and would only engage after revving the engine. Made it back home and none of the gears will engage unless I rev the engine to 2500 or so, which makes it lurch forward (or back) and chirp the tires, very unsafe and not good on parts obviously.
Is there anything I should do besides ship it back to TCI? The transmission worked perfectly the first 20-30 miles and today it started acting up. I need this truck running I am sick of working on it. Why would it work fine for a few miles then all of a sudden start acting up????
The fluid is bright red and doesnt smell burnt, and it is actually reading a little bit high on the dipstick.
My guess is that the converter wasn't fully seated into the pump. Friction between the converter and pump was able to spin the pump for a while until the parts self machined themselves to fit. Now there isn't enough friction until you rev the engine.
If I'm right you'll need a new converter and pump at a minimum. Sorry.
__________________ Mark Former Ford Automatic Transmission Engineer
“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
TCI had me check the fluid level, and drop the pan to check for debris/ ensure that the linkage nut inside the case was tight. At this point they are basically telling me to remove the tranny and ship it to them in Mississippi. It is under warranty but FEDEx will charge me $250 shipping round trip(warranty does NOT cover shipping.)
The tranny goes into reverse instantly and reverse seems to be working perfectly. D 2 and 1 takes about 2200+ rpm or so to get it to engage.
Could this be caused by a faulty and/or partially clogged valve body? I can replace the valve body easier and cheaper than sending it to TCI for warranty repair. Summit sells the TCI streetfighter valve body for $220.
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