engine rpm's - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-11-2006, 03:08 PM   #1
Junior Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2006
Location: Lebanon, Indiana
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
blwn327 is on a distinguished road
Default engine rpm'*

I'm curious...i dont believe my car was actually shifting into o/d yesterday on the highway.. on the way it was running right around 2100 rpm at 70-75mph..on the way back i was doing 65-70 at 2900.. so i'm guessing on the way it was in o/d and on the way back it wasn't in o/d.. whats the deal? The guy i bought it off of said the trans fluid/filter was last changed at 70,000 and the car has 130 on it now..so maybe it will shift into o/d with a fluid/filter change? How many miles can you let trans fluid/filter go without changing it?
Jeff
blwn327 is offline   Reply With Quote
Old 06-11-2006, 03:37 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

that actually seems about right for a SSEi gear ratio
1993 SLE is offline   Reply With Quote
Old 06-11-2006, 03:44 PM   #3
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

According my my tach, I get 75 mph at just a hair over 2000 rpm. It sounds like you weren't in 4th, like you think.

One question, could you tell if the torque convertor clutch was locked?
J Wikoff is offline   Reply With Quote
Old 06-11-2006, 03:45 PM   #4
Senior Member
Posts like a 4 Banger
 
Join Date: Dec 2004
Location: St. Charles, MO
Posts: 119
Thanks: 0
Thanked 0 Times in 0 Posts
chuck03 is on a distinguished road
Default

I wonder about this too. I have a '92 SSEi. It will shift into O/D and run about 28-2900, then, if not under load, it will drop to about 21-2200 RPM. It will also, quickly jump back to 28-2900 should you subject it to a slight load. Shifing it into drive will run the RPMs up higher though.

(Disclaimer:These #'* may be slightly off as I haven't really addressed this before. You get the idea though. )
chuck03 is offline   Reply With Quote
Old 06-11-2006, 06:29 PM   #5
Junior Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2006
Location: Lebanon, Indiana
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
blwn327 is on a distinguished road
Default

ok, well i couldnt tell if the tcc was locked in or not, how would i be able to tell? i took it out today and it shifted into od at like 55 or so.
blwn327 is offline   Reply With Quote
Old 06-11-2006, 07:30 PM   #6
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

At constant highway speed, slowly apply throttle. If the revs climb with the gas pedal without holding steady, then jumping to higher revs after so much throttle is added, the TC is not locking.
J Wikoff is offline   Reply With Quote
Old 06-12-2006, 08:50 AM   #7
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

70-75mph around 2000-2100 is normal. Realizing that I know my own tachometer is off by 200rpm from a scan tool,

Running closer to 3K rpm would be 3rd gear. You mention being in O/D vs not, are you sure that the gear selector was fully in place?

A fliud/filter change would be good maintenance if it'* been 60K since the last time, however if you do have a problem...it will not necessarily fix the problem.
BillBoost37 is offline   Reply With Quote
Old 06-13-2006, 07:14 PM   #8
Junior Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2006
Location: Lebanon, Indiana
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
blwn327 is on a distinguished road
Default

i dont think the tc is locking.. yes i'm sure it was all the way into o/d.. yesterday i shifted from o/d to drive and as mentioned before the revs did go up.. but sometimes it will shift into od and sometimes it wont.. running in 3rd gear is pissing me off, it takes alot of gas.. and shouldnt be run at 2900 when its designed to run 2100.. and i dont and wont have 1300 to rebuild this transmission.. thats over half what i paid for the car.. Not to mention i thought i was getting into a car that got 15-17mpg in the city and what 19-22 on the highway.. i'm getting what my old 83 chevy truck with a horribly tuned carb on a 305 got..which is why i sold it. i still love the bonneville..no doubt about it.. but i cant afford to get the trans rebuilt.
Jeff
blwn327 is offline   Reply With Quote
Old 06-14-2006, 09:45 AM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Quote:
Originally Posted by BillBoost37
A fliud/filter change would be good maintenance if it'* been 60K since the last time, however if you do have a problem...it will not necessarily fix the problem.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
car idles @ 3500 rpm at start and 1900 rpm in drive? 88bonnsse 1987-1991 15 01-27-2008 04:41 AM
93 38 service engine Light on.... RPM up and down 293bonneville 1992-1999 9 03-19-2006 01:17 PM
Engine miss between 3-4k rpm, '94 Olds 88 LSS... dbtk2 1992-1999 7 02-13-2005 11:05 AM
engine RPM's setting off warning bonneville_canada 1992-1999 3 04-14-2004 05:15 PM
Engine Hesitation at 4000 rpm when not in gear StoopidSavant 1992-1999 7 12-29-2002 10:29 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:30 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.