Mobil 1 Synthetic ATF possible problem

[Racingki]

First of here are my mods,
-volant CAI
-Superchip flip ship (burned by L8 Apexi)
-Upper 2# pulley
-Magna flow catback

I recently had my tranny fluid flushed and filled with mobil 1 synthetic ATF and new tranny filter (total cost $90.00). Now before i had it flushed and right after L8 burned my chip it was shifting real hard into 2 and 3rd. so hard that at 3/4 throttle it would chirp the tires. Now after the change it doesn't quit wanna shift as hard into 2nd and 3rd. I tried putting some lucas tranny additive in but it didn't do much. and the other thing was how high should my RPM's go before it shifts, cause it's peaks up into the red zone and i don't feel quit safe with that. but if everyone else's does that then it's aight. thanks for the help

[03LightningRocks]

I would start by checking the easy stuff first. Check the fluid level. I have seen mine change after I run it around a few miles. It may have dropped a little after it worked it's way through the tranny and torque converter.

[03LightningRocks]

I just saw this post after i read yours. Something to think about.


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Quote:
Originally Posted by Racingki
I had my tranny flushed and put in mobil1 ATF and now my truck doesn't shift as hard into gears. Also when i'm on it it will go into the red and will take a se to shift. My truck only has 40k on it and it's a 99. tempted to take all that i spent on synthetic and go back to the ford stuff or try B&M trick Shift.



I know is too late now, but most recommend that you do not flush the new electronic transmissions. I know the Kwik Kar and the Pensoil shops near me have abandoned this practive because of complaints after performing the service.
I would remove the pan and drain, clean out the pan and refill.
Mark

[PoorSvtman]

We wont flush a tranny at work using the machine. We have one but wont use it. You flush the tranny but dont put a new filter in it? For 90 bucks i hope they changed the filter and flushed it.

[L8 APEX]

All of the old blue superchips have the shifts set at 5400 rpm and zero line pressure offset. If it is not shifting properly it is a mechanical problem inside the transmission. Additives won't help it at all. Mobil 1 is an excellent fluid we use it exclusively in every one of our built transmissions. It resists foaming and turning into acid to much higher temps than stock. It soulds like you may have an aftermarket shift kit or stuck valve in the accumulator. As the Superchip tune will not bark tires at part throttle in a stock transmission.