It is currently Wed Aug 15, 2018 1:06 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 15 posts ] 
Author Message
PostPosted: Sun Jan 15, 2012 9:21 pm 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20959
Location: MN/IA
Year and Trim: '17 Silverado 1500
So as you all probably know, my mileage has "always" sucked on my car. First it was my thermostat being stuck open the first winter, then it was a bad O2 sensor, but now I guess I finally figured out the root of my bad mileage: My "replaced" LIM gaskets. Somehow, when haro and I put it all back together, something didn't get assembled right and there must've been a vacuum leak through the LIM's or something. This explains why my car would rev up and down while cold during the summer, why my mileage sucked, etc.

My DIC currently says 29.6 MPG over 73 miles. I seriously cannot believe it was that all along...

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.


Top
 Profile  
 
PostPosted: Sun Jan 15, 2012 9:22 pm 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Sun Dec 05, 2010 6:17 pm
Posts: 5732
Location: DeKalb, IL
Year and Trim: .
92 SSE
92 Lumina Z34
98 Eighty-Eight
99 Tahoe
Nice, glad to see it's finally fixed...

_________________
Will
92 Bonneville SSE | L67/4T60E | 70K mi | Med Slate Grey w/ Two-Tone Grey Int. | Low Miles Time Capsule
92 Lumina Z34 | LQ1/4T60E | 175k mi | Torch Red w/Grey Int. | Summer Daily Driver and Future Turbo Racekar
98 Eighty-Eight Royale LS | L36/4T65 | 207k mi | Majestic Teal Metallic w/Grey Int. | Daily Beater, Future Cammed L67 Swap
99 Tahoe LT | L31/4L65E | 234k mi | Spiral Grey Metallic w/Grey Int. | Daily Winter Rig and Portable Concert Hall
James May wrote:
Hello.


Top
 Profile  
 
PostPosted: Sun Jan 15, 2012 11:23 pm 
Offline
SSEi Member
SSEi Member

Joined: Tue Apr 12, 2011 1:35 am
Posts: 157
Location: Leduc, Alberta
Year and Trim: 1999 Bonne SLE
Maybe I should do mine!!!! Should get better over the next little while, now have a long commute to work, 98% highway,

_________________
1999 DCM SLE- COTM Jan 2012
Planned mods... FWI, Exhaust and tips,Tinted all around

She's now gone:(
http://pontiacbonnevilleclub.com/forum/viewtopic.php?f=8&t=31352&p=312104#p312104
Image


Top
 Profile  
 
PostPosted: Sun Jan 15, 2012 11:24 pm 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20959
Location: MN/IA
Year and Trim: '17 Silverado 1500
Just make sure you get everything sealed up and torqued down right. I think that was my problem...

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 12:05 am 
Offline
Certified Bonneville Nut
Certified Bonneville Nut

Joined: Fri May 23, 2008 1:15 am
Posts: 3177
Location: Corning, NY
Year and Trim: 2012 Eco
How'd you figure out to check the LIM bolts?

_________________
2012 Chevrolet Cruze Eco - Current car
Image Image
1999 Buick LeSabre Custom - Former car

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 12:11 am 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20959
Location: MN/IA
Year and Trim: '17 Silverado 1500
viewtopic.php?f=9&t=30207

I re-did pretty much everything, and it solved the problem, lol.

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 12:25 am 
Offline
Posts like an L67
Posts like an L67

Joined: Wed Jun 02, 2010 7:16 pm
Posts: 1221
Location: Soutwest Michigan
Year and Trim: 2005 SLE
Glad to hear you tracked it down Ed. I know you have been tracking this one for awhile!

_________________
Eric

2005 SLE, Greystone Metallic, 152K.

A few mods..

Image


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 12:31 am 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Sun Dec 05, 2010 6:17 pm
Posts: 5732
Location: DeKalb, IL
Year and Trim: .
92 SSE
92 Lumina Z34
98 Eighty-Eight
99 Tahoe
00Beast wrote:
http://www.pontiacbonnevilleclub.com/forum/viewtopic.php?f=9&t=30207

I re-did pretty much everything, and it solved the problem, lol.

Who would have thought power mods would help regain some MPG's in that great of an effect? :bhuh: :P

_________________
Will
92 Bonneville SSE | L67/4T60E | 70K mi | Med Slate Grey w/ Two-Tone Grey Int. | Low Miles Time Capsule
92 Lumina Z34 | LQ1/4T60E | 175k mi | Torch Red w/Grey Int. | Summer Daily Driver and Future Turbo Racekar
98 Eighty-Eight Royale LS | L36/4T65 | 207k mi | Majestic Teal Metallic w/Grey Int. | Daily Beater, Future Cammed L67 Swap
99 Tahoe LT | L31/4L65E | 234k mi | Spiral Grey Metallic w/Grey Int. | Daily Winter Rig and Portable Concert Hall
James May wrote:
Hello.


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 12:39 am 
Offline
SSEi Member
SSEi Member

Joined: Tue Apr 12, 2011 1:35 am
Posts: 157
Location: Leduc, Alberta
Year and Trim: 1999 Bonne SLE
00Beast wrote:
Just make sure you get everything sealed up and torqued down right. I think that was my problem...


I haven't noticed much symptom wise that'd suggest a vaccum leak, It idles at 1500 dead cold (-26 today...) and then drops as it warms up. Occasional little stutter whether hot or cold... But have been hoping to see better than 20~ MPG average. will have to see if it increases with more highway driving.

Regardless, 29 is impressive!

_________________
1999 DCM SLE- COTM Jan 2012
Planned mods... FWI, Exhaust and tips,Tinted all around

She's now gone:(
http://pontiacbonnevilleclub.com/forum/viewtopic.php?f=8&t=31352&p=312104#p312104
Image


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 1:38 am 
Offline
Moderator
Moderator
User avatar

Joined: Mon May 19, 2008 9:51 pm
Posts: 7391
Location: Toronto, Canada
Year and Trim: 09 G8 GT
Great, so now you can actually brag that you get better mileage than I do :P

_________________
Image
Jerry /// Past: 95 SSEi (June 2010 COTM) -- 04 GXP (July 2011 COTM)
91 Honda Civic Wagon DX 2WD (fuelly) -- 208,000km -- 92hp -- Autocross Warrior
09 Lexus LS460 AWD -- 94,000km -- Daily Driver
09 White Hot G8 GT -- 155,000km (fuelly) -- LS3 Cam -- GM LS3 CNC Ported Heads -- Kooks 1 3/4" Long Tube Headers -- Solo Catback Midsection -- Hooker Maxflow Mufflers -- Pat G Tune -- Rotofab Intake -- Tein S-Tech Springs -- GXP FE3 Dampers -- BMR Subframe Cradle Inserts -- BMR Subframe Connectors -- Forgestar F14 Gold 18x9 +40 -- Michelin Pilot Super Sport 245/45/18 -- Maverick Man Carbon Fiber Spoiler


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 1:47 am 
Offline
Retired Moderator
Retired Moderator
User avatar

Joined: Mon May 19, 2008 6:08 pm
Posts: 7649
Location: Midland, Michigan
Year and Trim: 2002 SE
What was the mileage you were getting before?

_________________
Ryan
Check out my detailing page on facebook! --> Next Level Detailing
Image
2003 Bonneville SSEi - The Black Mirror SOLD!
2002 Bonneville SE - The Mutt Complete 2004 SLE interior, drivetrain, and body harness swap, ECC swap, HUD swap, black GXP wheels, GXP headlights and tinted tails - SOLD
2003 BMW 540i M Sport, 2001 BMW X5 4.4i, 2010 GMC Acadia, 2017 Grand Design Imagine 3150BH
1982 Cutlass Supreme - The fun one

MattStrike wrote:
It was the worst week of my life! *pause, drinks beer... smiles* But I'm better now!


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 12:51 pm 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20959
Location: MN/IA
Year and Trim: '17 Silverado 1500
20 MPG on the spot, no matter how I drove.

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.


Top
 Profile  
 
PostPosted: Mon Jan 16, 2012 9:04 pm 
Offline
Certified Bonneville Nut
Certified Bonneville Nut

Joined: Fri May 23, 2008 1:15 am
Posts: 3177
Location: Corning, NY
Year and Trim: 2012 Eco
Gotcha. Nice to see you got it mostly dialed in, and that it works!

_________________
2012 Chevrolet Cruze Eco - Current car
Image Image
1999 Buick LeSabre Custom - Former car

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.


Top
 Profile  
 
PostPosted: Tue Jan 17, 2012 12:35 am 
Offline
Resident Gearhead
Resident Gearhead
User avatar

Joined: Mon May 19, 2008 10:30 pm
Posts: 8710
Location: Grand Rapids, Michigan
Year and Trim: 2014 Cadillac XTS Vsport.
Were your fuel trims out of whack?

_________________
*Gone, but not forgotten* - Black 2000 SSEi, HIR Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, 180 degree thermostat, HS 1.9 rockers, LSx yellow springs, Intense FWI, PCM, shift kit, push rods, and 3.4 Pulley. ZZP Power Log.


Top
 Profile  
 
PostPosted: Tue Jan 17, 2012 12:38 am 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20959
Location: MN/IA
Year and Trim: '17 Silverado 1500
No, which is the weird part. I never did check my FT's at idle...

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 15 posts ] 

All times are UTC - 5 hours [ DST ]


Related topics
 Topics   Author   Replies   Views   Last post 
This topic is locked, you cannot edit posts or make further replies. Gas Mileage

myworld

4

914

Wed Sep 21, 2011 3:31 pm

yonkerse View the latest post

There are no new unread posts for this topic. Gas Mileage

nickdalzell1

18

1071

Tue Dec 13, 2011 9:16 pm

nickdalzell1 View the latest post

There are no new unread posts for this topic. gas mileage?

jddem

14

971

Tue Feb 17, 2015 8:29 pm

KnightBonne02 View the latest post

There are no new unread posts for this topic. average gas mileage

94SilverSSEi

14

1380

Mon Jul 14, 2008 10:35 am

2000Silverbullet View the latest post

There are no new unread posts for this topic. Post Your Gas Mileage

[ Go to pageGo to page: 1, 2 ]

94SilverSSEi

26

2587

Thu Sep 25, 2008 8:34 am

Gumball View the latest post

 


Who is online

Users browsing this forum: No registered users and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group


phpBB SEO