1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

So, regarding top speeds again.

Thread Tools
 
Search this Thread
 
Old 08-22-2006, 12:31 AM
  #1  
Senior Member
Posts like a Turbo
Thread Starter
 
Timothy's Buick's Avatar
 
Join Date: May 2005
Location: Fredericton, New Brunswick.
Posts: 380
Likes: 0
Received 1 Like on 1 Post
Timothy's Buick is on a distinguished road
Default So, regarding top speeds again.

I took the LeSabre out for a spin on the highway, and tried to see how fast I could go. (don't worry, it was safe)

Since my speedo only goes to 160 KPH, which is... (sorry, have no idea what thats in MPH) I cannot see what the top speed of the car is.

I had the pedal buried to the floor, and it seemed to go fast. Buried the speedo, but the tachometer stopped at arounds 4300 rpm, and would not increase.

I'm not even sure what gear it was in, or if it was in OD, but how fast would that be now?
Old 08-22-2006, 12:42 AM
  #2  
Senior Member
True Car Nut
 
Hans's Avatar
 
Join Date: Jul 2004
Location: Twin Falls, Idaho
Posts: 7,545
Likes: 0
Received 1 Like on 1 Post
Hans is on a distinguished road
Default

I'd imagine 108 MPH is the max.
Old 08-22-2006, 04:21 AM
  #3  
Senior Member
Posts like a Corvette
 
DarkShadow's Avatar
 
Join Date: Jun 2005
Location: Berkeley, IL
Posts: 1,596
Likes: 0
Received 0 Likes on 0 Posts
DarkShadow is on a distinguished road
Default

the old ln3 dosent have a speed limiter, just a fuel cutoff at the redline...

i had mine a little past 115 then i let off
Old 08-24-2006, 05:07 PM
  #4  
Senior Member
Posts like a Camaro
 
phoenix_flame220's Avatar
 
Join Date: Oct 2003
Location: Hamilton, Ontario
Posts: 1,074
Likes: 0
Received 0 Likes on 0 Posts
phoenix_flame220 is on a distinguished road
Default

One member had theyre car up to 240 km/h, you were probably at 200km/h or so
Old 08-27-2006, 04:35 PM
  #5  
Junior Member
 
Falisa's Avatar
 
Join Date: Aug 2006
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Falisa is on a distinguished road
Default

lol Just saw this while scanning over the forum... I got my 1989 Bonneville to 110 but let off. :o
Old 08-27-2006, 09:05 PM
  #6  
Senior Member
True Car Nut
 
Maymybonnieliveforevr's Avatar
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Likes: 0
Received 0 Likes on 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default

There is a rev limiter, so shouldn't top speed be basically the same?
Old 08-27-2006, 09:28 PM
  #7  
Junior Member
 
2000SilverBullet's Avatar
 
Join Date: Jun 2002
Posts: 0
Likes: 0
Received 0 Likes on 0 Posts
2000SilverBullet is on a distinguished road
Default

Yes, the rev limiter with * rated tires would be set at 108 mph. That corresponds roughly to 4300 in 3rd gear.
Old 08-28-2006, 01:05 AM
  #8  
Senior Member
Posts like a Turbo
Thread Starter
 
Timothy's Buick's Avatar
 
Join Date: May 2005
Location: Fredericton, New Brunswick.
Posts: 380
Likes: 0
Received 1 Like on 1 Post
Timothy's Buick is on a distinguished road
Default

Ok, 108 MPH is 160-170 KPH. Thats in third gear, and at 4300 RPM.

Now, if i were to disconnect the TV cable, wouldn't the tranny go right to 160 KPH (100 MPH) and stay in 4th gear, TCC in? Wouldn't it be able to go faster, or would the fuel cut-off still limit the vehicle speed?

NEXT QUESTION... How do i go faster? (speed rated tires of course) But what else?

One thing'* for sure. Compared to most other small import or domestic cars, The buick feels VERY secure at high speeds, even with the stock 205/75/r14 tires. lol
Old 08-28-2006, 10:52 PM
  #9  
Junior Member
 
2000SilverBullet's Avatar
 
Join Date: Jun 2002
Posts: 0
Likes: 0
Received 0 Likes on 0 Posts
2000SilverBullet is on a distinguished road
Default

The only way I know of defeating the speed limiter is to have the PCM reprogrammed.

I have noticed that these cars do feel very stable up to about 140 mph but over 150 and the back end starts to feel loose. You probably won't have to worry about being able to exceed 140 mph (220 kph).
Old 08-29-2006, 01:57 AM
  #10  
Senior Member
Posts like a Camaro
 
phoenix_flame220's Avatar
 
Join Date: Oct 2003
Location: Hamilton, Ontario
Posts: 1,074
Likes: 0
Received 0 Likes on 0 Posts
phoenix_flame220 is on a distinguished road
Default

From my understanding, these cars do not have a PCM speed limiter. Not everything is electronically controlled like the newer models.


Quick Reply: So, regarding top speeds again.



All times are GMT -4. The time now is 07:45 AM.