Park Avenue 91 lost overdrive

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

Thank you

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.

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.

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.

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.

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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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.

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.

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.

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!

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.

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

http://experts.about.com/
http://experts.about.com/q/792/1491719.htmq/792/1491719.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

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.

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

http://experts.about.com/
http://experts.about.com/q/792/1491719.htmq/792/1491719.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.

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.

Here is a post from my Mustang Racing message boards about TCC lock up solenoids that i posted about my vehicle? Are these guys imagining it to? Look at ~jesters~ reply:


http://forums.mustangworks.com/showthread.php?s=&threadid=44013&highlight=torque+converter

yes you have to remove the side cover.

That is a quote from your link. First of all the TCC is not part of the emissions label. Second of all the TCC is internal to the transmission under the side cover. Third the TCC solenoid is electrical and not vaccum operated. This has been this way since the mid 80's

First you state the ECM is the cause of the problems then you start on this vaccum operated TCC solenoid, which is it?

You have yet to show me anything that suggests a vaccum operate TCC solenoid. If you want I have some old TCC solenoids laying around the shop from the mid and late 80's. This transmission didn't change till the mid 90's when it went to more computer controled. The TMH125 trans disappeared and the 4T60 became the 4T60E which was replaced by the 4T65E. The 3 speed trans became the 3T40E.

Why don't you post a pic of your emissions label! If I am wrong I will admit it but I doubt I am wrong. I have read all of your posts and seen numerous times you talked without knowing what you are talking about.

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.


Lets see we are dealing with a 1991 front wheel drive car not an early 80's rear wheel drive car am I correct on this? You can send me all the parts you want but we are dealing with an 91 Park. I have parts from a 37 Buick I can send you. No new GM car or truck uses vaccum to control the transmission.

You need to make up your mind are we talking about 1980, 1990 or 2000 transmissions.

Man youl have a serious Additude... I work all day and have a family to deal with at nite.. But trust me tonight I will be taking a picture of the TCC vaccum solenoid for ya and posting it.

Here it is for ya, Here is a schematic for the 700R4 and notice the engine vacuum switch, or " TCC Vaccum Solenoid "... It is the same for all GM transmissions.. I will have a pic tonight for the one on the PA..

http://www.purplesagetradingpost.com/sumner/techinfo/700R4p1.html

http://www.350rx7.com/mazda/Torque%20Converter%20Controller.htm

here is one for the 200r4

http://www.350rx7.com/mazda/Torque%20Converter%20Controller.htm

here is one for the 200r4

Here it is for ya, Here is a schematic for the 700R4 and notice the engine vacuum switch, or " TCC Vaccum Solenoid "... It is the same for all GM transmissions.. I will have a pic tonight for the one on the PA..

http://www.purplesagetradingpost.co...fo/700R4p1.html

That's great I agree with that site but you still haven't shown a vaccum opertaed TCC solenoid only a electrical TCC solenoid which is what I have been saying all along.


Lets see we are dealing with a 1991 front wheel drive car not an early 80's rear wheel drive car am I correct on this?

I can see you have a reading problem. You might as well use a Saab transmission for your example because it carries the same weight. The post starter has a problem with a FWD trans not a rear wheel please get that thru to your brain. The 700R4 isn't the 4T60 you cannot compare the 2 to solve this problem. All you have to do is admit the TCC is not vaccum operate and that the trans in question is the 4T60.


Man youl have a serious Additude... I work all day and have a family to deal with at nite.. But trust me tonight I will be taking a picture of the TCC vaccum solenoid for ya and posting it.

I'm still waiting!

Since you have a family I would suggest you spend your time with them and not post misinformation. I have seen you post misinformation at least 15 times in the past 2 weeks.

You say I have an attitude because I corrected your misinformation. I'm sorry I hurt your feeling by correcting you before someone wasted their time following your information.

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.

Stop posting if you do not know what you are talking about. This person needs real help. Not chasing false leads.
The only vacuum device on a 91 Buick tranny would be the modulator if it even has one, which operates the spool valve. The charcoal canister has never had anything to do with the transmission.

parkavenuechrome. How many trannys have you worked on? I have never seen a early 90's GM car with a vacuum solenoid on the TCC. If you go to the parts america web site you will see a photo of this device. It is electric just like we said.
Borg-Warner S9818 is the part number.
So please stop confusing the issue with misinformation. Go turn some wrenches.

Here is the picture of the solenoid in question. And as for how many trannies? Plenty believe me.

Look at my gallery and you will see three of the pictures... let me know if you can't see them.

Lets Everyone go unplug the solenoid and watch and see out TCC not lock up anymore.. If you still don't believe what i am saying thats great.. Just shows that we need to call our buddies into this post to fight there battles.. pathetic if you ask me. I think you all need to turn some wrenches and stop putting down people information and general knowledge ( public ).

As i have been reading the schematics in the haynes manual another name for this is the canister purge valve as well. It senses the vehicle manifold vaccum and it in turn shut off the TCC when no vaccum is detected or low vaccum.

Alright, THIS STOPS HERE.

Enough Bickering, lets just all be quiet and make friends again

It seems that parkavenuechrome had an incorrect name for the specific part in question. He realized and corrected his mistake.

Flatrater and Public, you guys were a little too harsh on him, it's our job at AF to educate peopl, not be condescending.

Subject closed, Thread Closed.