Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 928 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
Maleficio's Avatar
 
Join Date: Mar 2010
Posts: 1,217
Garage
Extended tank range by 100 miles.

Before I got my ox sensor connected properly, I was getting 160 miles per tank, equaling approx 9 mpg.

With ox sensor working properly, tank range is now at 260 miles, approx 15 mpg.



The connector was not healthy, and causing intermittent connectivity, cycling between open and closed loop.

__________________
1982 Porsche 928, Auto, 4.5
http://i72.photobucket.com/albums/i166/hethaerto/928Mist2.jpg?t=1305333945
Old 01-28-2012, 11:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Aug 2011
Posts: 55
What size is your tank. It should be 25.11 gallons including the reserve.
So 160 mi range is only 6.37 mpg. 260 miles is only 10.35mpg. My MY80 with the o2 sensor unplugged gets 15 to 18 driven hard and fast which is nearly 400 mi range. Maybe I should reconnect mine.
Old 01-28-2012, 09:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
928: Serial Enabler
 
Join Date: Sep 2007
Location: Elkhart, Indiana
Posts: 2,929
Same for us on our red VA Beach car, 84 Ljet.

Drank gas like a mofo til we changed the sensor.

Now getting 19 to 20 mpg on highway
__________________
84,85,86 928 cars
Old 01-28-2012, 10:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
European Shark
 
riber.bentsen's Avatar
 
Join Date: Jun 2010
Location: Aarhus, Denmark (Europe)
Posts: 773
Garage
Same as Landseer, 20 mpg all day..

In city driving conditions I don't even bother, just runs straight through
__________________
1978 Porsche 928 Euro 5spd. Silver metallic/Black
1986 Porsche 928 S2 Euro 5spd. Meteormetallic/Grey. *Crashed*
Owning a 928 is risky business - but sometimes you just gotta say "what the fudge".
Old 01-29-2012, 12:04 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
The Porsche to beat was one of the 914 models, I forget which, but it would do 625 miles on a tank of gas.

The car to beat was one of the audiophile guys I used to know, lived in San Diego and used to drive a diesel Rabbit. He put in I think it was three extra tanks to hold as much fuel as possible and would drive down to TJ and buy diesel for 5 cents a gallon filling up every 2,000 miles.
Old 01-29-2012, 01:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Moderator
 
MPDano's Avatar
 
Join Date: Dec 2007
Location: Sunny San Diego
Posts: 9,025
Garage
5 cents a gallon? I'm not even going to ask you what year that was
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 01-29-2012, 07:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered
 
Maleficio's Avatar
 
Join Date: Mar 2010
Posts: 1,217
Garage
Quote:
Originally Posted by waynestrutt View Post
What size is your tank. It should be 25.11 gallons including the reserve.
So 160 mi range is only 6.37 mpg. 260 miles is only 10.35mpg. My MY80 with the o2 sensor unplugged gets 15 to 18 driven hard and fast which is nearly 400 mi range. Maybe I should reconnect mine.

I think mine is smaller, I've never been able to put in more than 19 gals, and that was after I ran out of gas, which was 160 miles of driving. Now I can go up to 260 miles per tank.
__________________
1982 Porsche 928, Auto, 4.5
http://i72.photobucket.com/albums/i166/hethaerto/928Mist2.jpg?t=1305333945
Old 01-29-2012, 02:50 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
Maleficio's Avatar
 
Join Date: Mar 2010
Posts: 1,217
Garage
Quote:
Originally Posted by Danglerb View Post
The Porsche to beat was one of the 914 models, I forget which, but it would do 625 miles on a tank of gas.

The car to beat was one of the audiophile guys I used to know, lived in San Diego and used to drive a diesel Rabbit. He put in I think it was three extra tanks to hold as much fuel as possible and would drive down to TJ and buy diesel for 5 cents a gallon filling up every 2,000 miles.

That's wild. Did he keep the extra tanks in the car while driving it, or keep the extra tanks at home and replenished when needed? Iwonder if all that extra weight may have reduced his mpg?
__________________
1982 Porsche 928, Auto, 4.5
http://i72.photobucket.com/albums/i166/hethaerto/928Mist2.jpg?t=1305333945
Old 01-29-2012, 02:51 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
He had the tanks built into locations on the Rabbit, but he was a crazy engineer type guy. For his turntable he cut a hole in his floor and sunk a concrete pillar into the ground with a floating optical grade slab on top. Worked pretty well.
Old 01-30-2012, 01:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
European Shark
 
riber.bentsen's Avatar
 
Join Date: Jun 2010
Location: Aarhus, Denmark (Europe)
Posts: 773
Garage
Quote:
Originally Posted by Maleficio View Post
I think mine is smaller, I've never been able to put in more than 19 gals, and that was after I ran out of gas, which was 160 miles of driving. Now I can go up to 260 miles per tank.
All 928's hold the same amount of fuel - 86 liters (19 imp gal., or 22.7 US gal.), including reserve.
__________________
1978 Porsche 928 Euro 5spd. Silver metallic/Black
1986 Porsche 928 S2 Euro 5spd. Meteormetallic/Grey. *Crashed*
Owning a 928 is risky business - but sometimes you just gotta say "what the fudge".

Last edited by riber.bentsen; 01-30-2012 at 02:00 AM..
Old 01-30-2012, 01:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Petie3rd
 
Mrmerlin's Avatar
 
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
Send a message via Yahoo to Mrmerlin
HB look at your tank see if it might be collapsed
__________________
^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK
1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray
1982 5sp Met black and tan sport seats
Old 01-30-2012, 04:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Engineer of profanity
 
924CarreraGTP's Avatar
 
Join Date: Apr 2011
Location: BFE
Posts: 1,290
Garage
My 1983 Mercedes 300D Turbo Diesel gets 32 mpg at 80mph. We drove it to Florida on one tank of fuel and some change.

__________________
1970 Porsche 911T Black
1990 Porsche 944 S2 Red on cashmere
1984 Porsche 928S Euro ROW GP white on black
Old 01-30-2012, 06:48 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Reply


 


All times are GMT -8. The time now is 01:36 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.