4L60E will not shift into 3rd under WOT?**Problem solved!!
4L60E will not shift into 3rd under WOT?**Problem solved!! I tried making a few passes to blow out the cobwebs on the Z today and i ran into a problem shifting into 3rd gear. My 1st-2nd gear shift seems ok but when i go to shift into 3rd gear the car lays on the rev limiter at 5500 rpms and will not shift out unless i let off the accelerator. My shift points are at 6500 rpms and rev limiter is at 6800 rpms through ed wright tuning. I top off the fluid level because it was a little low but still had the same problems after i corrected the fluid level. Could it be the shift valve getting stuck? Any ideas can help because the new TCS 4400 is going into the car next week and i would like to get the problem fixed while the tranny is out.
Scott
Scott
TECH Enthusiast
Joined: Mar 2002
Posts: 630
Likes: 0
From: York, PA
Re: 4L60E will not shift into 3rd under WOT? Any ideas? Like the man said your MPH shift point have to be moved down. Hot/poor air can drop your MPH enough to affect this if your MPH/RPM are cutting it close. Also, watch your tranny temps.
Launching!
Joined: Dec 2001
Posts: 232
Likes: 0
From: Little Rock, AR
Re: 4L60E will not shift into 3rd under WOT? Any ideas? Mine had a similar problem after I finished building it. Lowering 2/3 shift point helped, but the bottom line was that the clutch packs were slipping on 2/3. The 2/3 shift was not crisp (could last for as much as ~1 sec). Finally had it rebuilt (thanks to Mike at Yank before he moved) a month ago and that fixed the problem.
Could just be lots of hard wear on the clutches.
Could just be lots of hard wear on the clutches.
Re: 4L60E will not shift into 3rd under WOT? Any ideas? I had the tranny rebuilt 4 months ago so the clutches are hardly worn and i run a tranny cooler as well. My tranny temps stay within 172-178 degrees.
I don't understand how my tuning droped the rev limiter down,it's supposed to be locked in? If it did why am i hitting it at 5500 rpms when it is set at 6800 rpms??? Also the transmission fluid looks very clean.
I don't understand how my tuning droped the rev limiter down,it's supposed to be locked in? If it did why am i hitting it at 5500 rpms when it is set at 6800 rpms??? Also the transmission fluid looks very clean.
On The Tree
Joined: Jul 2003
Posts: 140
Likes: 0
Re: 4L60E will not shift into 3rd under WOT? Any ideas? i have the same problem and the car is 100 stock 98 with 4l60e and no slippage problems other than 2-3 shifts have seen alot of guys on here with the smae problem, and no fix even guys with rebuilt trans do this why?
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TECH Junkie
iTrader: (7)
Joined: Nov 2001
Posts: 3,378
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From: From the Bowels of Hell!!! You want some of me bitch?!?!?!
Re: 4L60E will not shift into 3rd under WOT? Any ideas? Scott, whether or not it was recently rebuilt or not, I bet the clutches are gone. When I was having mine built by a guy here in town, they only lasted ~1000 miles before it would crap out again. There is a guy in Houma, La. that IS the **** on these trannies. $650.00 for a race prep if you send him the tranny. Email me and I'll give you his name/#.
He has trannies that are living behind 10 sec supercharged cars. 4l60e trannies that is. He did the one in my wifes car and she is rough on it and after 1.5 years, NO problems what so ever. Several people around here have used him and NONE have had problems.
Tim
He has trannies that are living behind 10 sec supercharged cars. 4l60e trannies that is. He did the one in my wifes car and she is rough on it and after 1.5 years, NO problems what so ever. Several people around here have used him and NONE have had problems.
Tim
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Verdad Gallardo Re: 4L60E will not shift into 3rd under WOT? Any ideas? Tim,thanks for the info but i got the hook up on a race tranny 
It seems the problem is related to the motor from what me and paul (thunder racing) have come up with. Sounds like my 918s spring are gone after 25K miles of racing,atleast that is what were hopeing for.
It seems the problem is related to the motor from what me and paul (thunder racing) have come up with. Sounds like my 918s spring are gone after 25K miles of racing,atleast that is what were hopeing for. Re: 4L60E will not shift into 3rd under WOT? Any ideas? Found the problem 
It turns out the tranny checked out fine,along with revlimiter and fuel pressure. The problem was a pinched knock sensor wire and was causeing low voltage,so the knock sensor was maxing out the KR at WOT and cutting off the fuel. All is fine now after cutting out the broken section on the wire and rewireing the PCM.
Scott
It turns out the tranny checked out fine,along with revlimiter and fuel pressure. The problem was a pinched knock sensor wire and was causeing low voltage,so the knock sensor was maxing out the KR at WOT and cutting off the fuel. All is fine now after cutting out the broken section on the wire and rewireing the PCM.Scott
TECH Resident
Joined: Jun 2003
Posts: 862
Likes: 1
From: Los Angeles, CA
Re: 4L60E will not shift into 3rd under WOT? Any ideas? hey hey,
dont you guys read other threads?
my trans is GONE!
why wont anyone give me
THE HOOK UPS
for a beefed trans?
im in bad need for one
its my only car
and i have to share it w/ the wife!
Tim98TA, StreetStalkerZ, please send me a # or two.. i dont want to have to rebuild this as often as local trans shops are telling me
On The Tree
Joined: May 2002
Posts: 189
Likes: 2
From: MO
Re: 4L60E will not shift into 3rd under WOT? Any ideas? I heard low voltages are often over looked as the problem, but learned they can cause issues because of the "e" in the 4l60-e needs the correct voltage to operate... anyone?
Re: 4L60E will not shift into 3rd under WOT? Any ideas? The wire is located on the top PCM prom under the hood but your wire maybe in a different location in the PCM,so i would get a helms or a chart with the location of each wire to be sure you looking at the right one.
Scott
Scott
