93 ALLANTE 4T80E - STAYS IN GEAR FOR ONE MINUTE

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11-12-2008, 03:12 PM

paulrosin

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Join Date: Nov 2008

Posts: 4

93 ALLANTE 4T80E - STAYS IN GEAR FOR ONE MINUTE

After sitting for two months my transmission developed aproblemit's never had.I have replaced the valve body on the transmission- cleaned the vehicle speed sensor and the car still will only stay in drive for two minutes after starting the car. I can turn the car off for one minute and again it will stay in drive for two minutes and then slip out. It sat for two months and had a dead battery but had no transmission issues prior to it sitting. There is an L110 code in the history but I have no idea what it is. Could the PCM develop a problem while sitting with a dead battery? After all the reading I have done it seems unlikely the 4T80E tranny took a total dump. There is a pressure control solenoid that might be the culprit but there are literally no codes associated with tranny issues- it did throw a P024 - I suspect that was due to it being in drive and revving the engine and it going nowhere. I am open to any and all
suggestions......

11-12-2008, 04:17 PM

Stealth

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Join Date: Feb 2007

Posts: 3,945

RE: 93 ALLANTE 4T80E - STAYS IN GEAR FOR ONE MINUTE

Quote:

ORIGINAL: paulrosin

After sitting for two months my transmission developed aproblemit's never had.I have replaced the valve body on the transmission- cleaned the vehicle speed sensor and the car still will only stay in drive for two minutes after starting the car. I can turn the car off for one minute and again it will stay in drive for two minutes and then slip out. It sat for two months and had a dead battery but had no transmission issues prior to it sitting. There is an L110 code in the history but I have no idea what it is. Could the PCM develop a problem while sitting with a dead battery? After all the reading I have done it seems unlikely the 4T80E tranny took a total dump. There is a pressure control solenoid that might be the culprit but there are literally no codes associated with tranny issues- it did throw a P024 - I suspect that was due to it being in drive and revving the engine and it going nowhere. I am open to any and all
suggestions......

add a bottle of LUCAS fluid, drive as much as you can, idle the car in gear, do NOT REV engine .. do that as much as you can, report back.

11-13-2008, 03:01 PM

paulrosin

Thread Starter

Join Date: Nov 2008

Posts: 4

RE: 93 ALLANTE 4T80E - STAYS IN GEAR FOR ONE MINUTE

Will do - I did add some Lucas Oil three nights ago - it seems that since adding it I no longer even get the 1 minute in drive....... it certainly isn't leaving the driveway but I can sit in while its in gear........

11-13-2008, 08:08 PM

paulrosin

Thread Starter

Join Date: Nov 2008

Posts: 4

RE: 93 ALLANTE 4T80E - STAYS IN GEAR FOR ONE MINUTE

30 minutes in drive with foot on brake - will still roll backwards while in drive - have noticed once it is good and warmed up it will only stay in drive for 30 seconds - is will stay in drive longer when it is completely cold. You can feel it gently slip out of drive though. Is another can of Lucas in order?

11-14-2008, 06:13 PM

paulrosin

Thread Starter

Join Date: Nov 2008

Posts: 4

RE: 93 ALLANTE 4T80E - STAYS IN GEAR FOR ONE MINUTE

After last nights 30 minutes tonight it will not even hold on to drive at all...... I also noticed that while in PARK when I checked the transmission fluid it seem like it was just sitting in there - the fluid was as flat as glass - I sort of thought it should be churning a bit..... Any more ideas ANYONE????? I am about desperate.....