4l60e 1st and reverse only
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Teching In
Joined: Dec 2016
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4l60e 1st and reverse only hey guys, currently doing a 5.3/4l60e into my 1996 jeep cherokee XJ.
went for a test spin around the block the other day after i got it drivable and the transmission refuses to shift out of first, ive ran it to 4krpm/30ish mph with no shift to second. i still need to verify the problem exist if i manualy shift to 2-3( i need to tweak the shifter still to get it to travel to 1-2-3 that far)
here are things that i know:
-fancy snap-on scanner was attached and every thing seems to test out correctly
-no trouble codes
-the shift solenoids are functioning properly
-1-2 accumulator springs are in good shape and the housing is not damaged
-has proper level of fluid
-trans is powered and grounded
-VSS is reading properly
-TPS is reading properly
-transfer case is in 2hi
currently the up stream 02 sensors are not connected as i have no exhaust built yet(didnt want it t get in the way of trans diagnosing)
i'm not much of a trans guy, and i've looked at everything i can from searching google but i am officially stumped.
any help would be greatly appreiciated
went for a test spin around the block the other day after i got it drivable and the transmission refuses to shift out of first, ive ran it to 4krpm/30ish mph with no shift to second. i still need to verify the problem exist if i manualy shift to 2-3( i need to tweak the shifter still to get it to travel to 1-2-3 that far)
here are things that i know:
-fancy snap-on scanner was attached and every thing seems to test out correctly
-no trouble codes
-the shift solenoids are functioning properly
-1-2 accumulator springs are in good shape and the housing is not damaged
-has proper level of fluid
-trans is powered and grounded
-VSS is reading properly
-TPS is reading properly
-transfer case is in 2hi
currently the up stream 02 sensors are not connected as i have no exhaust built yet(didnt want it t get in the way of trans diagnosing)
i'm not much of a trans guy, and i've looked at everything i can from searching google but i am officially stumped.
any help would be greatly appreiciated
Whats been done to the transmission? Ever been apart?
You sure it's 1st and not 3rd?
You sure it's 1st and not 3rd?
hey guys, currently doing a 5.3/4l60e into my 1996 jeep cherokee XJ.
went for a test spin around the block the other day after i got it drivable and the transmission refuses to shift out of first, ive ran it to 4krpm/30ish mph with no shift to second. i still need to verify the problem exist if i manualy shift to 2-3( i need to tweak the shifter still to get it to travel to 1-2-3 that far)
here are things that i know:
-fancy snap-on scanner was attached and every thing seems to test out correctly
-no trouble codes
-the shift solenoids are functioning properly
-1-2 accumulator springs are in good shape and the housing is not damaged
-has proper level of fluid
-trans is powered and grounded
-VSS is reading properly
-TPS is reading properly
-transfer case is in 2hi
currently the up stream 02 sensors are not connected as i have no exhaust built yet(didnt want it t get in the way of trans diagnosing)
i'm not much of a trans guy, and i've looked at everything i can from searching google but i am officially stumped.
any help would be greatly appreiciated
went for a test spin around the block the other day after i got it drivable and the transmission refuses to shift out of first, ive ran it to 4krpm/30ish mph with no shift to second. i still need to verify the problem exist if i manualy shift to 2-3( i need to tweak the shifter still to get it to travel to 1-2-3 that far)
here are things that i know:
-fancy snap-on scanner was attached and every thing seems to test out correctly
-no trouble codes
-the shift solenoids are functioning properly
-1-2 accumulator springs are in good shape and the housing is not damaged
-has proper level of fluid
-trans is powered and grounded
-VSS is reading properly
-TPS is reading properly
-transfer case is in 2hi
currently the up stream 02 sensors are not connected as i have no exhaust built yet(didnt want it t get in the way of trans diagnosing)
i'm not much of a trans guy, and i've looked at everything i can from searching google but i am officially stumped.
any help would be greatly appreiciated
Thread Starter
Teching In
Joined: Dec 2016
Posts: 21
Likes: 1
I've drained and refilled the trans twice and changed the filter, ohmed the shift solenoids and commanded them on with a scanner.
i haven't gotten it fast enough to get it to shift to 3rd
as far as i know its never been apart and has 80k
i haven't gotten it fast enough to get it to shift to 3rd
as far as i know its never been apart and has 80k
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Joined: Aug 2010
Posts: 7,323
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From: Ann Arbor, MI
If you can, have the rear wheels off the ground and command all the gears; you should be able to feel the shifts and see the speed increase. Give us feedback on thta.
I would first suspect the VSS when a trans seems to be stuck in 1st gear.
Does the scanner show the speed?
What PCM/ECM are you using?
I would first suspect the VSS when a trans seems to be stuck in 1st gear.
Does the scanner show the speed?
What PCM/ECM are you using?
Thread Starter
Teching In
Joined: Dec 2016
Posts: 21
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unfortunatly i dont have access to the snap-on scanner any more.
however my blue toothe scanner for the tourque app on my phone will show the speed just fine
pcm is a 411 unit programmed for stand alone by lt1swap.com and its OE to the motor
however my blue toothe scanner for the tourque app on my phone will show the speed just fine
pcm is a 411 unit programmed for stand alone by lt1swap.com and its OE to the motor
Whats been done to the wiring harness?
Thread Starter
Teching In
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i reworked the harness myself for stand alone in the jeep, the trans has power, ive verified it with a multimeter. ive re routed somethings to run an ls1 intake, but other than running power thru the fuse block i made i mostly left the trunk of harness that goes to the trans alone
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Teching In
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yes the vss signal is reading thry the pcm ive verify via my bluetooth reader and the snapon scanner
i will do that although ive already checked the shift solenoids them selfs and commanded them on and off when i had access to the scanner, but i guess it couldnt hurt
Did you command the solenoids on and off while driving?
Another easy test, pull the trans plug off and it should be stuck in 3rd.
Right now you're stuck with both solenoids powered. (actually grounded, they're always powered)
Another easy test, pull the trans plug off and it should be stuck in 3rd.
Right now you're stuck with both solenoids powered. (actually grounded, they're always powered)
the linkage will be easy, i just have to clearnce the floor a bit so the cable bolt on the shifter will move enough
yes the vss signal is reading thry the pcm ive verify via my bluetooth reader and the snapon scanner
i will do that although ive already checked the shift solenoids them selfs and commanded them on and off when i had access to the scanner, but i guess it couldnt hurt
yes the vss signal is reading thry the pcm ive verify via my bluetooth reader and the snapon scanner
i will do that although ive already checked the shift solenoids them selfs and commanded them on and off when i had access to the scanner, but i guess it couldnt hurt
Thread Starter
Teching In
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Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Jays is giving you good suggestions.
With the trans harness disconnected the trans will start in 3rd gear, although I think you can force 2nd with the shifter.
Since your Torque app is showing the speed, the PCM is reading the VSS properly.
Are you sure your PCM was setup to support an auto trans?
And sure your shifter isn't stuck in 1st gear?
So far I think (and hope) that sometime very basic is wrong here.
As Jays wrote, get your shifter working properly.
With the trans harness disconnected the trans will start in 3rd gear, although I think you can force 2nd with the shifter.
Since your Torque app is showing the speed, the PCM is reading the VSS properly.
Are you sure your PCM was setup to support an auto trans?
And sure your shifter isn't stuck in 1st gear?
So far I think (and hope) that sometime very basic is wrong here.
As Jays wrote, get your shifter working properly.
Last edited by mrvedit; Dec 19, 2016 at 10:40 PM.
Thread Starter
Teching In
Joined: Dec 2016
Posts: 21
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Jays is giving you good suggestions.
With the trans harness disconnected the trans will start in 3rd gear, although I think you can force 2nd with the shifter.
Since your Torque app is showing the speed, the PCM is reading the VSS properly.
Are you sure your PCM was setup to support an auto trans?
And sure your shifter isn't stuck in 1st gear?
So far I think (and hope) that sometime very basic is wrong here.
As Jays wrote, get your shifter working properly.
With the trans harness disconnected the trans will start in 3rd gear, although I think you can force 2nd with the shifter.
Since your Torque app is showing the speed, the PCM is reading the VSS properly.
Are you sure your PCM was setup to support an auto trans?
And sure your shifter isn't stuck in 1st gear?
So far I think (and hope) that sometime very basic is wrong here.
As Jays wrote, get your shifter working properly.
shifter is defiantly in drive, i did the unplug the trans test and was still in first.
pcm was programmed for a 4l60e, and was controlling one from the factory.
thanks for the replies guys, usually i dont start threads rather i do my home work but this thing jusst has me stumped.
i will look over these items over the next couple days
Thread Starter
Teching In
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does anyone know if there are and wiring differences in the transmissions between an 01 and an 05?
i need to decode the trans serial number but i know the trans is newer than the 5.3( motor came with a 2wd unit and i swapped it for a 4wd unit)
i need to decode the trans serial number but i know the trans is newer than the 5.3( motor came with a 2wd unit and i swapped it for a 4wd unit)
The only difference is the plug for the newer type epc solenoid.
So you say you can unplug the case connector and it still starts in 1st gear?
Thats near impossible, unless both solenoids are clogged or you have a mechanical failure. Any reason why you changed the fluid and filter twice?
My guess is that it's in third and you only think it's in first. And that would be caused by a wiring problem.
Or it's just a fried transmission. Did the place you got it from provide you with a vin of the vehicle it came out of, if so does it match whats stamped on the trans case? You can run a carfax and see real mileage. Or just tear it down and check everything.
This is why I NEVER buy "running" transmissions unless I can drive it first. I always buy cores and build them, this way I know they will work.
So you say you can unplug the case connector and it still starts in 1st gear?
Thats near impossible, unless both solenoids are clogged or you have a mechanical failure. Any reason why you changed the fluid and filter twice?
My guess is that it's in third and you only think it's in first. And that would be caused by a wiring problem.
Or it's just a fried transmission. Did the place you got it from provide you with a vin of the vehicle it came out of, if so does it match whats stamped on the trans case? You can run a carfax and see real mileage. Or just tear it down and check everything.
This is why I NEVER buy "running" transmissions unless I can drive it first. I always buy cores and build them, this way I know they will work.
If you unplug the harness to the transmission it HAS to start and stay in third gear.
Either the solenoids are both stuck, which would be weird.
Or it is in third gear and is slipping.
Third/fourth clutch failure is common so it may be shifting but slipping so bad you can't tell.
It can be commanded with a good scan tool to start in third, or it will with the harness disconnected.
I really don't see this getting resolved on a forum at this point.
After disconnecting the harness and having it still start in first, I'd drop the pan, remove the solenoids, make sure the O-rings are good, blow into them and air should blow out.
If all that happened I'd take the valve body off and check for stuck valves. Usually only happens if theres a lot of burned clutch floating around OR if water got into it.
If all valves are free take the trans out, pull it apart.
Either the solenoids are both stuck, which would be weird.
Or it is in third gear and is slipping.
Third/fourth clutch failure is common so it may be shifting but slipping so bad you can't tell.
It can be commanded with a good scan tool to start in third, or it will with the harness disconnected.
I really don't see this getting resolved on a forum at this point.
After disconnecting the harness and having it still start in first, I'd drop the pan, remove the solenoids, make sure the O-rings are good, blow into them and air should blow out.
If all that happened I'd take the valve body off and check for stuck valves. Usually only happens if theres a lot of burned clutch floating around OR if water got into it.
If all valves are free take the trans out, pull it apart.