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Buick LeSabre Transmission

57 messages,  Last post on Oct 01, 2009 at 6:28 PM

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#38 of 57 Re: Engine burps intermittantly [rudwil] by imidazol97 Jul 28, 2008 (6:47 am)
Replying to: rudwil (Jul 27, 2008 4:00 pm) The idle air control is the round one. It adjusts the bleed air to maintain a good idle; it adjusts for the air the bleeds around the throttle plate when it's closed since it blocks almost but not all the air.   The other sensor is a throttle position sensor. It measures how the throttle is opened. You can put an analoge ohmmeter across two of its leads and move the throttle. The resistance should change gradually. If it jumps that means the potentiometer windings have a worn section. That sends info to the computer telling it how much you have the throttle opened requestion GO. If the windings give the wrong throttle opening, the computer tries to give fuel for a different amount of air than the throttle plates are letting through. Replies to this message: rudwil (Jul 30, 2008 6:08 am) rudwil (Aug 05, 2008 11:03 am)
#39 of 57 Re: Engine burps intermittantly [imidazol97] by rudwil Jul 30, 2008 (6:08 am)
Replying to: imidazol97 (Jul 28, 2008 6:47 am) Since the engine seems to run without "burping" when the IAC is disconnected, I have the IAC on order and will replace it and will get back to you. I will check the TPS also, as you instructed.   Thanks again. Replies to this message: rudwil (Aug 05, 2008 11:03 am)
#40 of 57 Re: Engine burps intermittantly [rudwil] by rudwil Aug 05, 2008 (11:03 am)
Replying to: rudwil (Jul 30, 2008 6:08 am) Checked the TPS with my analog ohmmeter. varied the throttle setting several time slowly and had nice smooth change in resistance reading. Received and replaced the IAC. Ran great on a 40 mile run. Next day it burped again and today it burped frequently and stalled completely twice. I'm wondering if the fuel could be cutting off intermittently. I had the fuel pump replaced about a year ago but this problem didn't start till months later.
#41 of 57 transmission? by laurie10 Nov 03, 2008 (3:25 pm)
I own a 2000 buick Lesabre with 130,000 miles. Twice, once about 2 months ago and again today, I almost get to work and it starts to hesitate and buck and there is a shrill sound. I travel about 30 miles to work. I am able to park the car and work 8 hours then drive home with no problems. The first time I brought it to my mechanic he drove it around and said he didn't notice a problem. Any thoughts.
#42 of 57 Transmission Disengages by terrydana Mar 11, 2009 (11:45 am)
I have a 92 LeSabre. The trans jumps out of gear as you come to a stop. It only does it when I stop. I can get it to go back into gear by shifting into neutral and back to drive. Other than this the trans does not slip and shifts perfectly. It has no hesitation when going into gear. Replies to this message: imidazol97 (Mar 11, 2009 2:38 pm)
#43 of 57 Re: Transmission Disengages [terrydana] by imidazol97 Mar 11, 2009 (2:38 pm)
Replying to: terrydana (Mar 11, 2009 11:45 am) Needs to be checked but I don't know what goes wrong. The adjustment of the cable to the transmission from the shift lever may be out of adjustment. It snaps into place where it rotates the part on the top of the transmission. I believe a slide lock pulls up and snaps back down with the cable in place but I'm not sure where it's supposed to set.   It could be transmission/motor mounts allowing movement causing the shifting change. Could be internal.
#44 of 57 Lasabre transmission won't engage by mikes36 Mar 18, 2009 (1:50 pm)
I have a 94 Lasabre with 110,000 on it. For the last 2 years I have had trouble at start up getting the transmission to engage. At first it needed to warm up a couple minutes and then would run fine. Lately it doesn't seem to matter how long it warms up, it just won't engage on it's own until I race the engine with it in gear. Even then it seems to gradually take hold until after a few seconds it will go. After that it is fine unless I stop for more than an hour or so, which then requires me to start the process all over. Can't believe the tranny is "shot" or it just wouldn't go at all, any ideas? Replies to this message: imidazol97 (Mar 18, 2009 4:23 pm) wheeldeals (Aug 13, 2009 6:42 am) imidazol97 (Aug 13, 2009 10:27 am)
#45 of 57 Re: Lasabre transmission won't engage [mikes36] by imidazol97 Mar 18, 2009 (4:23 pm)
Replying to: mikes36 (Mar 18, 2009 1:50 pm) Was thhe transmission serviced with regular pan drops and filter changes? It's possibly a stopped up filter, but at this age 14 years it may be more. Sludging from old transmission fluid gumming up stuff would be high on my list.
#46 of 57 95 LeSabre Trans Probs/Questions by lilhog Mar 20, 2009 (7:30 pm)
I have a 95 Buick LeSabre that recently developed a trans problem. Sometimes you could put it in first gear and it won't go anywhere. When it does go, it goes very slow. I asked a mechanic and he said it was the orbital. To rebuild it is about $1700. ( I asked another mechanic and he said that was about right) Well I found a guy selling a trans out of a 1995 LeSabre (front wheel drive like mine, with the same engine. The 3800.) He is selling the trans for $350. My question is a parts dealer told me that Buick made two transmissions with different gear ratios. Does anybody know how to tell if the trans for sale will work in my car? Or how to tell the gear ratio of the transmissions? Thank you for taking an interest in my post.
#47 of 57 93 Buick LeSabre Transmission by aharper Apr 27, 2009 (5:29 am)
I have a 1993 Buick LeSabre with 190000 miles. When the car is first started and until it warms up the transmission pulls and shifts fine, will even spin the tires on gravel. But after it warms up (about 3 miles) it is just like the trans shifts to neutral. There is no slip or warning of any kind. When it does this you can't go in any gear or reverse. After the car sets about 15 minutes you can go another 3 miles with no slip or any thing then the cycle starts over. I don't think this would be a clutch problem because there is no slipping. Could it be some type of electrical problem? where do I start?

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