Park Avenue 91 lost overdrive

[ajc59]

How much trouble am I in. I lost cruise about 1 month ago and now overdrive went this morning, new transmission?

Thank you

[parkavenuechrome]

maybe, maybe not. If you lost cruise and now OD maybe your ECM ( computer ) is screwed. How does your trans oil look? How many miles? etc.. My bed is on the Computer or speed sensor.

[Flatrater]

If your speed sensor was the problem you wouldn't have a working speedo or odo.

Unless you have a 4T60E transmission your ECM does nothing for the transmission.

What do you base your loss of OD on? What transmission do you have on your car? I don't have my trans manuals at home to research it but I feel you have an internal trans problem.

[ajc59]

I lost cruise little by little, it started to go out when the road became hilly, once lost I was unable to turn it back on. Then one day it would not turn on at all.

I am not sure what transmission is in the car it is a 91 Dynaride. Great car, bought it at auction. 139,000 miles very nice condition, no rust complete new wiring.

Need to get front end looked at pulls a little to right.

[parkavenuechrome]

What is probably happening is you have a vaccum leak and you torque converter is not locking up hense it feels like OD is not there however the car is still in OD just the RPMs don't drop. drive you car at about 55 in D no OD then while your doing 55 shift to OD. if it shift and the R's go down your OD is fine. If you have a vaccum leak, the car will not lock up and the cruise won't work at all. Check your lines.. get back to me on this.

[Flatrater]

Originally Posted by parkavenuechrome

What is probably happening is you have a vaccum leak and you torque converter is not locking up hense it feels like OD is not there however the car is still in OD just the RPMs don't drop. drive you car at about 55 in D no OD then while your doing 55 shift to OD. if it shift and the R's go down your OD is fine. If you have a vaccum leak, the car will not lock up and the cruise won't work at all. Check your lines.. get back to me on this.

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[ajc59]

I will try it. It semed to be working this morning. This is the first buick I have ever owned and for touring I love it. My Spitfire is more fun though.

[ajc59]

It worked on Friday, not on Monday first thing, turned off car, turned it back on and it started working. Not working at 55 more like 65.

[parkavenuechrome]

You most likely have a vaccum leak going to the TCC lockup solinoid located charcol canister next to the air filter box. your computer could be screrwed up, but my bet is in the vaccum leak.

[Flatrater]

Originally Posted by parkavenuechrome

You most likely have a vaccum leak going to the TCC lockup solinoid located charcol canister next to the air filter box. your computer could be screrwed up, but my bet is in the vaccum leak.

Do you even know what you are talking about? The TCC solenoid is electrical no vaccum goes to it!

[parkavenuechrome]

Originally Posted by Flatrater

Do you even know what you are talking about? The TCC solenoid is electrical no vaccum goes to it!

Flatratter you work at a dealership, What do u think tell the computer that the motor is under load? THE TCC vaccum solenoid that is located on the Canister.. I find it rude and un professional to tell people that they don't know what they are talking about.. Just cause you work a dealership doesn't mean you know it all. I could say alot of crap about dealerships and how they rip people off but i am not gunna go there. Ok I may not have a mechanics title but i am ASE certified, and I biuld 5 liter mustangs for racing. if you would like me to send you a TCC vaccum solinoid i will, and I know the TCC solenoid is in the trans. I am talking about the vaccum switch for TCC lockup.

[parkavenuechrome]

Here is some articles off the web regarding this Part..

http://experts.about.com/
http://experts.about.com/q/792/14917...92/1491719.htm
http://www.2carpros.com/makes/buick/century.htm

I will also have a part number from the dealer and a picture for you to take a look at the TCC vaccum switch solenoid

[Flatrater]

Originally Posted by parkavenuechrome

Flatratter you work at a dealership, What do u think tell the computer that the motor is under load? THE TCC vaccum solenoid that is located on the Canister.. I find it rude and un professional to tell people that they don't know what they are talking about.. Just cause you work a dealership doesn't mean you know it all. I could say alot of crap about dealerships and how they rip people off but i am not gunna go there. Ok I may not have a mechanics title but i am ASE certified, and I biuld 5 liter mustangs for racing. if you would like me to send you a TCC vaccum solinoid i will, and I know the TCC solenoid is in the trans. I am talking about the vaccum switch for TCC lockup.

First of all there is no such thing as a TCC vaccum solenoid! If you are talking about the solenoid on top of the charcoal cannister that is called the purge valve for the EVAP system and not the trans. There is one one vaccum line going to the transmission which is located on the modulator valve and its job is to control shift feel.

Now I never ever said I know it all, I learn new things everyday. But when I see someone spouting misinformation it needs corrected.

Next you go on saying how you won't talk shit about dealers yet in your next sentence you go talking again about something you know nothing about. If you keep this course I will have no choice in removing you form this forum. The ball is in your court.

[Flatrater]

Originally Posted by parkavenuechrome

Here is some articles off the web regarding this Part..

http://experts.about.com/
http://experts.about.com/q/792/14917...92/1491719.htm
http://www.2carpros.com/makes/buick/century.htm

I will also have a part number from the dealer and a picture for you to take a look at the TCC vaccum switch solenoid

First 2 links offer nothing but a homepage. Third link doesn't do much either. If you want cut and paste it to your post.

[parkavenuechrome]

Hey Flattrater, In a early 80's car what would cause your TC to lock up? Its called a TCC Vacuum Solenoid. When your on the gas your Vacuum drop having your Vacuum advance pull timing out of your motor and unlocking your TC.. You can belive what you want to.. I'll be glad to send you a Vacuum solinoid.. Pre 90's before TPS's and ECM's the vaccum solinoid determined wether the motor was in load or not. Everything was vacuum driven. Its the same in 90's cars and even some today. Were talking about early 90's cars here not 00's.. Look at the Emissions sticker right on the vehicle under the hood.. Guess what it says.. TCC SOLENOID with all the necessary vacuum lines coming to it. And as for saying you don't know it all, thats fine, But do go knocking other peoples knowledge.