LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

The obd1/4l60e fix works!!!

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Old Nov 28, 2004 | 04:55 PM
  #1  
big dave's Avatar
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From: Silver Spring ,Md.
The obd1/4l60e fix works!!!

Finally. After 2 years,2 tranny changes, and 2 motors, I can now have my everyday driveability back. Today I was able to pull off a 1.57 60' and my car shifted with no problems. Unfortunately the 30 mph headwind kept me from seeing any new bests but I'm happy as hell this problem has now been solved. A couple years back, anything below a 1.67 60 would've sent the car into limp home mode and only a quick restart would've cleared everything out. It had gotten to the point where I finally said, screw the 4l60e, and went with a 700r4. Unfortunately/fortunately, things didn't work out too well with the 700, and after hearing that there may have been a fix for the 4l60e, decided to give it another try. Nuf said.
Old Nov 28, 2004 | 04:58 PM
  #2  
1996LT1NY's Avatar
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From: Old Bridge Township Raceway Park
Re: The obd1/4l60e fix works!!!

Glad to hear about that fix...I had problems with that on my Impala with anything better than a 1.79 when I was trying to use an OBD1 PCM conversion. What did you do to fix the problem ?
Old Nov 28, 2004 | 06:52 PM
  #3  
94 TA TT2S's Avatar
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From: Bluegrass State
Re: The obd1/4l60e fix works!!!

What or who fixed it???/
Old Nov 28, 2004 | 08:02 PM
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From: Windy City
Re: The obd1/4l60e fix works!!!

yea what was the fix?
Old Nov 28, 2004 | 08:25 PM
  #5  
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Re: The obd1/4l60e fix works!!!

I wanna know what the fix is too !!!!
Old Nov 28, 2004 | 09:01 PM
  #6  
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Re: The obd1/4l60e fix works!!!

pcmforless.com is supposed to have a software fix for this as does EW. pcmforless.com worked for a friend with a OBD1 swap in a 96 Impala with 3.73s and a 3000stall Edge he was hitting limp mode till he got an update for the stall then Bryan fixed it.
Old Nov 28, 2004 | 11:04 PM
  #7  
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Re: The obd1/4l60e fix works!!!

People seem not to want to talk about this fix, like it is a big secret.
Old Nov 29, 2004 | 12:13 AM
  #8  
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From: Missouri
Re: The obd1/4l60e fix works!!!

It's only a big secret until someone reads the PCM that it's on. Even if it's something hidden, that program can be used then all other tables imported to it. All someone needs is a good BIN with the fix and use that as the base....

I have heard and even used with what I think was success the following:

Set MPH for shifts in kickdown low and use the rpm to make the car shift. This works on some cars but not all. I do know that if you can find the part in the BIN that has to do with the allowed slippage in the trans and modify it that fixes it, too.

BTW: My wife's convertible has a Vigilante 3200 in it and she has never had the high stall problem. It only runs 12's so that may have something to do with it.

Ryan
Old Nov 29, 2004 | 01:37 AM
  #9  
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From: richmond virginia
Re: The obd1/4l60e fix works!!!

yea i dont know y you would even post the "fix" works if you dont wanna tell us what the fix is..yhese forums are supposed to be about helping eachother out..
Old Nov 29, 2004 | 01:56 AM
  #10  
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Re: The obd1/4l60e fix works!!!

Originally Posted by shoebox
People seem not to want to talk about this fix, like it is a big secret.
I've noticed that on this board too. Any of the real important, good, need to know info, is a secret on this board. Such things as, 987 springs will fit stock heads, you can keep 3 channel ABS with 9inch rears, even the information about shortening the cam dowel pin use to be hush hush for a long long time. I was on the board for 2 years and never read about that until about month before i built my new motor.
Old Nov 29, 2004 | 03:08 AM
  #11  
atljar's Avatar
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From: Cincinnati, Ohio
Re: The obd1/4l60e fix works!!!

How in the world would you keep 3 channel on a 9 inch? 4 channel, yes super easy. 3 channel???
Old Nov 29, 2004 | 04:59 AM
  #12  
94 TA TT2S's Avatar
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From: Bluegrass State
Re: The obd1/4l60e fix works!!!

I would like to know ..as I have had the PCMFORLESS FIX and maybe he has found something else out since the second try on my PCM....But when I sent mine to have it tuned the first and second time it didn't work on my car...So I am using OBD-2....But would like to use my OBD-1 seems to run really good but will not shift. I am looking for 11's with just a cam my lil cc305 .....I think it could be done if it would shift with the OBD-1 computer done by Bryan....So if there is something that will work...I am gonna try it.....Not a secret just something else to try in my situation....
Old Nov 29, 2004 | 06:12 AM
  #13  
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From: Mission, Kansas
Re: The obd1/4l60e fix works!!!

pmcforless tried twice before to fix it for me with no luck. He sent me a 3rd try but I never got to try it before pulling the motor. I'm running a 3600 yank and pull 1.64-1.66 60fts. I won't know either until I hit the track if its fixed or not, and the track is closed here until next spring.
Old Nov 29, 2004 | 11:18 AM
  #14  
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Re: The obd1/4l60e fix works!!!

Originally Posted by atljar
How in the world would you keep 3 channel on a 9 inch? 4 channel, yes super easy. 3 channel???
Just one of those message board secrets, i guess.
Old Nov 29, 2004 | 01:40 PM
  #15  
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From: BC
Re: The obd1/4l60e fix works!!!

If anyone has a tunercat bin of their PCM with the "fix" applied I'll post the differences. I'd like to know the "fix" too. It's the only thing holding me back from a higher stall converter...



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