4L60E won't shift 1-2 at WOT
08-01-2010, 05:44 PM
#1
4L60E won't shift 1-2 at WOT Just got done swapping my old motor from my car into the wife's car. I took her car out to the track, and the thing won't shift at WOT from 1-2, or 2-3. I'm really hoping it's in the tune, and not mechanical. The tranny is perfect at partial throttle driving around tow. Kickdown is even great.
I have it commanded in EFI to shift at 6200, and I have to pedal it twice to get it to shift. It goes all the way to the limiter.
Little background is that the car is originally a 6 speed car from back before I owned it, it has a 3600ish stall. It's your run of the mill h/c car otherwise.
Any help would be greatly appreciated.
I have it commanded in EFI to shift at 6200, and I have to pedal it twice to get it to shift. It goes all the way to the limiter.
Little background is that the car is originally a 6 speed car from back before I owned it, it has a 3600ish stall. It's your run of the mill h/c car otherwise.
Any help would be greatly appreciated.
Trending Topics
08-02-2010, 06:47 AM
#10
I don have EFI, but when I hear you say you have to pedal it twice, sounds like your WOT shift is set higher than your ear likes the RPMs to go and you let off the throttle, then it shift, and then you push the pedal back down.
If that is the case, look at where your WOT points are set, and lower them to a lower RPM range and or lower MPH. If your transmission is older and worn, you may command it to shift at 6000 RPM but because its a little tired, but the time it thinks about and takes action, it may be 6400 RPMs. If that's the case, you have to understand that, and lower your points more for the desired shift points. Those have nothing to do with your Rev Limiter setting.
Also if EFI has a table which shows when what percentage your throttle has to be at for WOT. That my be set to high.
If you had HP Tuners, Id take a look at if for you, but I dont use EFI.
Good luck
Phil
If that is the case, look at where your WOT points are set, and lower them to a lower RPM range and or lower MPH. If your transmission is older and worn, you may command it to shift at 6000 RPM but because its a little tired, but the time it thinks about and takes action, it may be 6400 RPMs. If that's the case, you have to understand that, and lower your points more for the desired shift points. Those have nothing to do with your Rev Limiter setting.
Also if EFI has a table which shows when what percentage your throttle has to be at for WOT. That my be set to high.
If you had HP Tuners, Id take a look at if for you, but I dont use EFI.
Good luck
Phil
08-02-2010, 07:49 AM
#11
You wot shift MPH tables are set to high. The one shift isnt allowed till 6500 and your Final rev limit commanded is 6200 on the cold table.
I would move those down to say 40% of what they are now, then just command what you want in the wot rpm tables.
6500 is probably too high for a shift anyways.
I would move those down to say 40% of what they are now, then just command what you want in the wot rpm tables.
6500 is probably too high for a shift anyways.
07-08-2016, 10:06 PM
#14
Two things you should know. The first is that you just resurrected a thread from 6 years ago, so don't expect a prompt response. The second is that you cannot "hard reset" a PCM to a factory tune. You need to find a stock file to flash back into it. This requires some form of tuning software.
07-24-2017, 12:59 AM
#16
Speed and rpm tables in tune are probably set to high 5200 rpm 35 speed works good for mine.
07-24-2017, 01:37 AM
#17
Staging Lane
Join Date: Jun 2015
Location: Melbourne, Australia
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
Bit late but for anyone else reading the original part of the thread, BOTH conditions have to be met, and from memory, it has to see the MPH before it even looks for the RPM condition, hence many people just zero out the MPH.
