gas mileage - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 09-01-2005, 11:29 PM   #11
Senior Member
Posts like a Turbo
 
Join Date: Feb 2004
Location: Pittsburgh,Pa
Posts: 292
Thanks: 0
Thanked 0 Times in 0 Posts
A20H is on a distinguished road
Default

I have been getting around 20 sometimes as high as 25 and as low as 15 mostly stays in that range unless i take a long trip
A20H is offline   Reply With Quote
Old 09-01-2005, 11:53 PM   #12
IO
Senior Member
Posts like a Turbo
 
Join Date: Jan 2004
Location: Lake Forest, CA
Posts: 321
Thanks: 0
Thanked 0 Times in 0 Posts
IO is on a distinguished road
Default

Quote:
Originally Posted by swartlkk
IO, it definitelly sounds like there is something amiss in your engine/computer control somewhere. When was the last time you did a full tune up (plugs and wires)? Is your engine running good? My Bravada has what seems like surges in acceleration. I replaced the plugs, wires, cap and rotor and it did wonders for the engine, but the surging was still there. I cleaned the throttlebody and Idle Air Control motor and it got even better. I even went so far as to completelly clean the EGR system, which again helped, but like I said before, I have confirmed that my O2'* are very slow to respond with my autotap. Your problem with mileage could be anything from bad gas to O2 sensors that are on their way out. I always recommend when it'* time for a full tune up on most vehicles to replace O2 sensors when you do the rest. A bad O2 sensor could foul new plugs over a shorter period of time as well. You should get it checked out because you are just wasting money on gas right now! Figure around $200 for a full tuneup (probably would be less - and only get AC Delco O2 Sensors which are cheaper from GMPartsDirect.com). If after the tuneup you get 22mpg, that'* 7mpg better. You'll pay off that $200 in less than 500 miles (with a premium fuel price of $3/gal - it'* higher here now).

Good luck!
I've always gotten this type of mileage. From the first day I purchased it Brand New. However I just picked up Autolite 104'* and I'm purchasing Magnecor Wires. I only have 52k on my engine. I run all synthetic oil in my engine (new every 3000) and in my tranny (new every 30k). I've had my SC serviced twice and had my tranny flushed once. I never run over 200 degrees. And my Bonneville seems to run very well.

I've never had my TB off, nor the EGR. I do run a K&N stock replacment air filter. But like I say I've always gotten the same 14.5 MPG, however I am very heavy footed!
IO is offline   Reply With Quote
Old 09-04-2005, 12:22 AM   #13
Junior Member
Posts like a Ricer Type-R
 
Join Date: Jul 2005
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
laylowcustoms is on a distinguished road
Default mileage

I have an SLE and get an adverage of 27-28 with city and highway driving. I know I dont have the supercharger but I feel that I have enough power the way it is.

I have a question though. Are SLEs a limited edition? I eithere see SEs or SSEIs. Its like I'm hte only SLE
laylowcustoms is offline   Reply With Quote
Old 09-04-2005, 12:24 AM   #14
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

no there SLE'* are not a limited edition.......there are a TON of SLE'* on here, and some of the SE'* dont even know they are a SLE
1993 SLE is offline   Reply With Quote
Old 09-04-2005, 01:08 AM   #15
Member
Posts like a V-Tak
 
Join Date: Jul 2005
Location: DE
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
coliphage is on a distinguished road
Default

18-19mpg in town (many lights)
27-28mpg highway (60-80mph)

00 SE 72K all stock
coliphage is offline   Reply With Quote
Old 09-05-2005, 05:36 PM   #16
Senior Member
Certified GM nut
 
Join Date: May 2005
Posts: 1,724
Thanks: 0
Thanked 1 Time in 1 Post
gm4life is on a distinguished road
Default

Okay I am not real pleased with mine...
Town 14-16 (tons of hills)
Highway 26-28 (I was hoping for closer to 30 or 32)
My Bonn is hog compared to my Impala!
The Impala gets...
Town 16-18 (hilly agian)
Highway 32-36 (I love that part)
The car feels somewhat slower than the Bonneville, but it has the old lady axle ratio and the old China built 3400! I love my 3800 Series II but the only thing I am not fond of is its fuel economy! Just my 5 cents!
gm4life is offline   Reply With Quote
Old 09-05-2005, 06:42 PM   #17
Junior Member
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Custom88 is on a distinguished road
Default

remember that your Bonneville weighs several hundred pounds more than your Impala as well. (and it has a larger, more powerful engine too.)
Custom88 is offline   Reply With Quote
Old 09-05-2005, 09:50 PM   #18
Senior Member
Certified GM nut
 
Join Date: May 2005
Posts: 1,724
Thanks: 0
Thanked 1 Time in 1 Post
gm4life is on a distinguished road
Default

Your right, and I still don't have as much room inside either... It was less car for more money... Oh well its looks better and drives alot better!
gm4life is offline   Reply With Quote
Old 09-05-2005, 11:30 PM   #19
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

you also have to consider the final drive ratio of both cars
1993 SLE is offline   Reply With Quote
Old 09-06-2005, 12:37 AM   #20
Junior Member
 
Join Date: Aug 2005
Location: North of Buffalo, NY *** NEBF '05, '06, '07 *** ***ONBF & NYBF 06; 07*** ***WCBF 06***
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
singscountry1967 is on a distinguished road
Default Re: mileage

Quote:
Originally Posted by laylowcustoms
I have an SLE and get an adverage of 27-28 with city and highway driving. I know I dont have the supercharger but I feel that I have enough power the way it is.

I have a question though. Are SLEs a limited edition? I eithere see SEs or SSEIs. Its like I'm hte only SLE
SLE here! No mods (yet!) Use Mobil 1 syn oil and mid-grade gas (there was no diff in mileage between 89 and 92 octane for me). I get 23-24mph driving a mix of city/otr driving ( I run 45 miles roundtrip to work).

I have noticed, however, that the DIC is always 1 mpg higher than when I calculate it out.
singscountry1967 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Gas, Oil And Gas Mileage **** SERIES II ENGINES**** Nashville Cowboy General GM Chat 26 02-06-2007 06:23 PM
gas mileage durbancic General GM Chat 6 04-05-2004 06:28 AM
low gas mileage? Greg 1992-1999 10 01-12-2004 10:27 PM
Bad gas mileage G2SSEi95 1992-1999 12 11-01-2002 02:46 AM
What can I do to improve my gas mileage? Blk_Bonneville 1987-1991 10 08-25-2002 12:15 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 09:58 PM.


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.