The 8th Gen Riviera Resource
 
HomeDashboardSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksLog in

Share
 

 Fuel/Gas Gauge Problems & Questions

Go down 
Go to page : Previous  1, 2, 3, 4
AuthorMessage
al_roethlisberger
Junkie
al_roethlisberger

Name : Al Roethlisberger
Age : 51
Location : Sanford, NC
Joined : 2013-03-12
Post Count : 956
Merit : 23

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyTue Apr 09, 2013 12:54 pm

I just replaced my fuel pump in the 95 Riviera I picked up a few weeks ago. It was a snap, The only trouble I had was getting the old locking ring knocked loose, but it came off afer some patience and persuasion with a rubber mallet.

BTW, the ENTIRE pump and sender assembly is very affordable now. There is no reason to spend $400-500 on an entire unit from the dealer. . If you are already "in there" and pulling a 15+ year old pump just to fiddle with the sender, I'd do the preventative maintenance to replace the whole thing. I wouldn't be surprised if the pump itself is on borrowed time at this point.

At Rockauto the entire pump assembly for the 95 is only $200 for the Delphi or ACDelco unit. I believe it is the same part for later years.


Here is the FAQ for the fuel pump:

http://rivperformance.editboard.com/t8943-faq-fuel-pump-general-questions-compatibility-troubleshooting

Back to top Go down
charlieRobinson
Expert
charlieRobinson

Name : Charlie
Age : 34
Location : Toledo, OH
Joined : 2011-05-17
Post Count : 3921
Merit : 30

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyTue Apr 09, 2013 2:28 pm

If one has to replace the fuel pump, are there any aftermarket pumps besides the OEM stock pump that can be used? Ive heard Racetronics mentioned a few times?

Is that a drop in fit?
Back to top Go down
al_roethlisberger
Junkie
al_roethlisberger

Name : Al Roethlisberger
Age : 51
Location : Sanford, NC
Joined : 2013-03-12
Post Count : 956
Merit : 23

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyTue Apr 09, 2013 3:19 pm

When I was researching the replacement of the pump for my 95, I read somewhere that the OEM pump was already more than sufficient for the pressure and flow we would need for this engine's reasonably conceivable HP output (within reason).

The ACDelco and Delphi (OEM supplier) units are reliable and relatively inexpensive, and a drop in direct fit (other than on older models having to update the electrical connector).

So I went with the Delphi which seemed to actually have slightly better feedback on other 3800 forums.

I played with outboard high-perf fuel pumps for a while on motorcycles, and in the end found the OEM solution to really be best unless your fuel pressure/flow needs outstripped what the OEM pump could provide. And usually the OEM pump was sufficient for quite a bit more HP than stock. Fiddling with extra home-made fittings, etc in the end just seemed like high risk when dealng with fuel versus a drop-in fit with OEM. I don't like modifying fuel delivery systems any more than I have to, especially if a daily driver. A weekend racer, yeah, daily driver... not so much smile


But YMMV of course. For reliability and fit, I went with OEM.

Al
Back to top Go down
Abaddon
Expert
Abaddon

Name : Scott
Location : Macomb, Michigan
Joined : 2010-02-24
Post Count : 4309
Merit : 185

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyTue Apr 09, 2013 3:27 pm

al_roethlisberger wrote:
The ACDelco and Delphi (OEM supplier) units are reliable and relatively inexpensive, and a drop in direct fit (other than on older models having to update the electrical connector)

Good note. Anything older than like 2007 gets updated. GM changed their Fuel Pump connectors across the board to a 4-wire flat. All Delco kits come with a new pigtail and 4 shrink style butt connectors. I had to re-wire mine in the winter when my pump took a poo.
Back to top Go down
highwaywarrior
Fanatic


Name : daryl
Age : 36
Location : chesapeake va
Joined : 2012-06-09
Post Count : 403
Merit : 2

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Fuel/Gas Gauge   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyThu May 23, 2013 4:53 pm

Ive driven 107 miles highway today, and my gauge hasnt moved much. From tge full position. Is this common? Is it broken lol
Back to top Go down
AA
Administrator
AA

Name : Aaron
Age : 42
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18370
Merit : 241

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyThu May 23, 2013 5:10 pm

Mine stays on F for the first 50-75 miles on the highway.

( ----- > Moving thread from Showroom)

_________________
'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO • 85k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe • 116k miles • 455 Rocket V8
Because cool


'95 Celica • 152k miles • 0-60: yes
Because free
Back to top Go down
http://www.cardomain.com/ride/657082/4
Abaddon
Expert
Abaddon

Name : Scott
Location : Macomb, Michigan
Joined : 2010-02-24
Post Count : 4309
Merit : 185

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyThu May 23, 2013 5:27 pm

Right. Fill it up, and it stays on Full for awhile. Once it gets to 1/2 tank, it seems plummet towards E lol. I think that's just a GM thing. It seems like every one I've owned does the same thing.
Back to top Go down
highwaywarrior
Fanatic


Name : daryl
Age : 36
Location : chesapeake va
Joined : 2012-06-09
Post Count : 403
Merit : 2

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyThu May 23, 2013 5:34 pm

Lol good point. Right now its a hundred and fifty four miles and I'm not even on three quarters of a tank yet and its all highway driving I'm heading to New Jersey
Back to top Go down
joshuadalegrimes
Addict
joshuadalegrimes

Name : josh
Age : 39
Location : harrodsburg, ky
Joined : 2012-09-02
Post Count : 501
Merit : 13

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyThu May 23, 2013 7:22 pm

mines like that or was till my maf went blah. gotta fix that asap!
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7580
Merit : 154

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyThu May 23, 2013 10:03 pm

highwaywarrior wrote:
Ive driven 107 miles highway today, and my gauge hasnt moved much. From tge full position. Is this common? Is it broken lol

I think it's a quirk of the low-bidder GM fuel level sender. Only fix I know is to rip it off the pump and install a different unit. You can check with a meter to see if it is linear and you can check the float arm n the pump assembly to see that the float can move the whole range.
Back to top Go down
bmcd9179
Fanatic
bmcd9179

Name : Bryson
Age : 24
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Gas meter?   Fuel/Gas Gauge Problems & Questions - Page 4 EmptySun Nov 17, 2013 10:28 pm

Hi guys, my gas meter acts weird, if I put in 6 gallons on an empty tank it goes up to the half way mark, anyone else had this deal? I know our tanks have like 19 gallons so this isn't right, it's not a big concern I'm just wondering.
Back to top Go down
96_Juggernaut
Fanatic
96_Juggernaut

Name : Todd Balestrini
Age : 37
Location : Beaufort S.C.
Joined : 2013-07-08
Post Count : 293
Merit : 5

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptySun Nov 17, 2013 10:35 pm

I noticed its like that with every car I have ever owned. half tank actually means quarter tank. Thats why it drops like a rock after half tank.
Back to top Go down
bmcd9179
Fanatic
bmcd9179

Name : Bryson
Age : 24
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptySun Nov 17, 2013 10:37 pm

Ok that's good I guess lol, I'm glad it's not an issue. Thanks Todd!
Back to top Go down
llamalor2112
Junkie
llamalor2112

Name : Evan
Age : 27
Location : Granite Falls, WA
Joined : 2012-07-13
Post Count : 852
Merit : 13

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptySun Nov 17, 2013 10:50 pm

I can typically drive about 140miles before my needle move at all. Same is typical of our century, lesabre, and the 91 reatta. Strangely, the 88 is dead accurate
Back to top Go down
bmcd9179
Fanatic
bmcd9179

Name : Bryson
Age : 24
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptySun Nov 17, 2013 11:09 pm

Interesting, I guess buick just wants us to be happy thinking we got a lot of gas in our cars lol
Back to top Go down
AA
Administrator
AA

Name : Aaron
Age : 42
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18370
Merit : 241

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyMon Nov 18, 2013 2:08 am

This is all theoretical, but I've seen the sender and the tank, and I think the reason for the non-linear gauge reading is likely the shape of the tank itself. The tank is tapered, wider at the top than at the bottom, but the float that commands the fuel gauge is a linear sender from what I can tell.

Actually, because of the shape of the float arm and the float itself, the first 1/4 of float drop (from "F" to 3/4) requires the smallest change in fuel level. This might seem like it's to compensate for the tank being wider at the top, but we know the gauge does not move for the first 50-100 miles when full. This indicates the float is submerged and does not report. So considering these things, it would seem the float is still close to being a linear sender, at least mechanically speaking.

Considering the shape of the tank, for a given amount of float movement when the tank is near full, the car must consume more fuel then for the same float movement when the tank is near empty. For example, say the sending unit has 8" of total float travel from "F" to "E". Being linear, each 2" float movement represents 1/4 tank on the gauge. The first 2" from full is a larger volume of fuel (maybe 6 gals). The last 2" is the smallest volume of fuel (maybe 3 gals). These are just guesses, but if you look at the shape of the fuel tank you can see that there is considerably less fuel capacity in the bottom half vs. the top half.

GM used the exact same tank for AURORA, BONNEVILLE, DEVILLE, LESABRE, PARK AVENUE, and SEVILLE, so if they used the same sender and gauge markings, the metering should be similar with all these cars. Why did they shape the tank this way? Maybe to attenuate fuel sloshing and cut-outs at very low fuel levels. I've run my Riviera's tank dry before, and once I remember taking turns extra hard on an empty tank in order to conserve fuel. Never did the engine cut out. At the first signs of running out of gas in a Riv, you are out of gas. There is no grace period!

_________________
'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO • 85k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe • 116k miles • 455 Rocket V8
Because cool


'95 Celica • 152k miles • 0-60: yes
Because free
Back to top Go down
http://www.cardomain.com/ride/657082/4
gmann3001
Fanatic
gmann3001

Name : Glenn W. Peck
Age : 46
Location : Orland Park, IL.
Joined : 2011-11-16
Post Count : 389
Merit : 9

Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 EmptyMon Nov 18, 2013 3:02 am

Mine float is in need of replacement. half a tank is close to empty now. the light used to come on at 1/8 and now sometimes comes on at 1/4 and on occasion at 1/2. after filling to full i can still add 5-8 gallons.
Back to top Go down
http://gmann3001@yahoo.com
Sponsored content




Fuel/Gas Gauge Problems & Questions - Page 4 Empty
PostSubject: Re: Fuel/Gas Gauge Problems & Questions   Fuel/Gas Gauge Problems & Questions - Page 4 Empty

Back to top Go down
 
Fuel/Gas Gauge Problems & Questions
Back to top 
Page 4 of 4Go to page : Previous  1, 2, 3, 4
 Similar topics
-
» 2006 450 rhino fuel guage
» IS IT POSSIBLE ??????
» fuel pump problems
» Fuel Pump on 660
» Wideband Air/Fuel Ratio Meter

Permissions in this forum:You cannot reply to topics in this forum
Riviera Performance ::   General Tech :: Care & Maintenance-
Jump to: