West Coast Fieros Homepage
Forum Home Forum Home » Technical Topics Forum » Technical Questions and Discussions
  New Posts New Posts RSS Feed - Fuel
  FAQ FAQ  Forum Search   Register Register  Login Login

Fuel

 Post Reply Post Reply
Author
Message
DeathLight443 View Drop Down
Newbie
Newbie
Avatar

Joined: 04 June 2012
Location: Canada
Status: Offline
Points: 11
Post Options Post Options   Quote DeathLight443 Quote  Post ReplyReply Direct Link To This Post Topic: Fuel
    Posted: 01 August 2012 at 12:40am
I got a 1985 Pontiac Fiero V6. Im just asking, how much liter do I put in it. On the internet, My fiero can take 40L. So i tried it. Empty my gas tank and try it. BUT It only took 25-30L. If I take more fuel then it will overflow and the gas will come out. Any help here???
Back to Top
bcampbell View Drop Down
Senior Member
Senior Member
Avatar

Joined: 14 November 2011
Location: Canada
Status: Offline
Points: 160
Post Options Post Options   Quote bcampbell Quote  Post ReplyReply Direct Link To This Post Posted: 03 August 2012 at 12:03am
Chances are there's still fuel in the tank when the gauge
is reading zero. That's the only thing I can think of.
It's the same in my car.
'86 2m6 F23 5-speed, LSD, 3.5L LX9
'89 Firebird 3500T, T56
Back to Top
Dr.Fiero View Drop Down
Senior Post God
Senior Post God
Avatar

Joined: 12 February 2007
Location: Canada
Status: Offline
Points: 1726
Post Options Post Options   Quote Dr.Fiero Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2012 at 6:06am
At least your gauge is reading on the wrong side that way!

Most Fieros run out of gas when the gauge reads 1/4 tank.

The 85's had a slightly smaller tank than the 86/7/8's which were (45L?).

Back to Top
Romeo View Drop Down
Senior Post God
Senior Post God
Avatar

Joined: 16 November 2008
Location: Canada
Status: Offline
Points: 3033
Post Options Post Options   Quote Romeo Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2012 at 2:27pm
Originally posted by Dr.Fiero Dr.Fiero wrote:

At least your gauge is reading on the
wrong side that way!Most Fieros run out of gas when the
gauge reads 1/4 tank.


YUUUP.
Never shift into reverse without a back-up plan.
Back to Top
bcampbell View Drop Down
Senior Member
Senior Member
Avatar

Joined: 14 November 2011
Location: Canada
Status: Offline
Points: 160
Post Options Post Options   Quote bcampbell Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2012 at 12:49am
When I had my gas tank off I cleaned the resistor on the sending unit
and I can drive till my gauge goes to zero. (although I haven't tried
going past 1/16th). Before cleaning it would read full constantly and
resistance was 3 times that required to max the gauge.
'86 2m6 F23 5-speed, LSD, 3.5L LX9
'89 Firebird 3500T, T56
Back to Top
Dr.Fiero View Drop Down
Senior Post God
Senior Post God
Avatar

Joined: 12 February 2007
Location: Canada
Status: Offline
Points: 1726
Post Options Post Options   Quote Dr.Fiero Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2012 at 6:09am
Totally common problem...

It should read between 0 and 90 ohms, with a linear sweep between. Sort of need a graphing meter to really see it, and to see if you have high or low spots. But in a pinch a normal meter will do.

They get varnished over the years.  Almost all GM fuel level sensors do it!

Back to Top
Capt Fiero View Drop Down
Admin Group
Admin Group
Avatar
Founding Member

Joined: 12 February 2007
Location: Canada
Status: Offline
Points: 4039
Post Options Post Options   Quote Capt Fiero Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2012 at 9:17am

84-86 10.3 Gallons or about 40 liters

87-88 11.9 Gallons or about 50 liters

Basic rule Empty on an 85 is 30 liters empty on an 88 is 40 liters.  They usually have about a gallon or 2 in the tank after a correct gauge reads empty. 

Side note for those that don't know, the Fuel Pump is cooled by fuel running through it, if you run a Fiero pump empty you reduce its life considerably.  So don't make a habit out of running out of gas or you will get in the habit of replacing fuel pumps.

Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.