Buick When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

1991 lesabre

Old Apr 8, 2021 | 02:09 AM
  #41  
1985 supra's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Apr 2021
Posts: 31
Likes: 0
1985 supra is on a distinguished road
Default

no I did not.
Reply
Old Apr 8, 2021 | 02:12 AM
  #42  
1985 supra's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Apr 2021
Posts: 31
Likes: 0
1985 supra is on a distinguished road
Default

Are you saying a bad wire connection ground or whatever would cause a fuse to blow? In the 98 LeSabre it would stall. Act like it was out of gas and not start for a hour or so. Never blew a fuse. It was a bad ground in the door.
Reply
Old Apr 8, 2021 | 08:29 PM
  #43  
1985 supra's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Apr 2021
Posts: 31
Likes: 0
1985 supra is on a distinguished road
Default

NEW INFO.

I dropped the tank to try a different pump. After I dropped it I checked the voltage at the fuel sender plug. It read 8.25 volts. A friend said to switch the relay. So whatever I did, same reading. So I am suppose to have around 12 volts correct? So bad wire bad ground bad connection is likely the problem correct? The wires going along the passenger side of the car do not look bad, it is rusty by the door but the wires were well wrapped. In the trunk where the wires from the sender go in that part is very rusty and there seems to be some kind of ground at that spot that I think you call a quick connect terminal connect ground that is extremely rusty. See pics of trunk and wires into car.

Reply
Old Apr 9, 2021 | 12:17 AM
  #44  
rjolly87's Avatar
Senior Member
True Car Nut
 
Joined: Jun 2003
Posts: 7,270
Likes: 465
From: Las Cruces, NM
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

Wow, that'* nasty. I would be curious what the fuel pump does with that ground disconnected.

If it is the ground for everything right there... well... it'* certainly crusty.
Reply
Old Apr 9, 2021 | 12:25 AM
  #45  
CathedralCub's Avatar
Senior Member


True Car Nut
 
Joined: Feb 2015
Posts: 6,877
Likes: 1,021
From: Earth
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Yeah it is.

I would test upstream of that wire, like at the fuse block, and figure out where the voltage drops. If it is reading 8.25v at the fuse block then your issue is upstream from that.
Reply
Old Apr 9, 2021 | 01:53 AM
  #46  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,245
Likes: 1,605
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

Originally Posted by 1985 supra
Are you saying a bad wire connection ground or whatever would cause a fuse to blow? In the 98 LeSabre it would stall. Act like it was out of gas and not start for a hour or so. Never blew a fuse. It was a bad ground in the door.
A poor connection is a source of resistance. As current flows through it warms and that increases it'* resistance. These types of shorts don't blow fuses as all they do is rob the devise (fuel pump in this case) of available voltage which in the case of a fuel pump it will slow.
Reply
Old Apr 9, 2021 | 01:55 AM
  #47  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,245
Likes: 1,605
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

Originally Posted by 1985 supra
NEW INFO.

I dropped the tank to try a different pump. After I dropped it I checked the voltage at the fuel sender plug. It read 8.25 volts. A friend said to switch the relay. So whatever I did, same reading. So I am suppose to have around 12 volts correct? So bad wire bad ground bad connection is likely the problem correct? The wires going along the passenger side of the car do not look bad, it is rusty by the door but the wires were well wrapped. In the trunk where the wires from the sender go in that part is very rusty and there seems to be some kind of ground at that spot that I think you call a quick connect terminal connect ground that is extremely rusty. See pics of trunk and wires into car.

That ground is bad.
Reply
Old Apr 9, 2021 | 02:25 AM
  #48  
HotZ28's Avatar
Senior Member
Posts like a 4 Banger
 
Joined: Apr 2006
Posts: 102
Likes: 26
From: USA
HotZ28 is on a distinguished road
Default

"So whatever I did, same reading. So I am suppose to have around 12 volts correct? So bad wire bad ground bad connection is likely the problem correct?"

Yes, you should have 12-v to the pump! It looks like you have finally found the source of the problem!
Reply
Old Apr 9, 2021 | 11:45 AM
  #49  
1985 supra's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Apr 2021
Posts: 31
Likes: 0
1985 supra is on a distinguished road
Default

What is the easiest way to fix this? You bolded bad ground. So you're saying its a ground problem? What if I tapped into the ground line going to the pump and made a separate ground for it to somewhere good?
Reply
Old Apr 9, 2021 | 11:53 AM
  #50  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,245
Likes: 1,605
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

Originally Posted by 1985 supra
What is the easiest way to fix this?
Take it to a shop that does electrical.
Reply

Thread Tools
Search this Thread

All times are GMT -4. The time now is 01:59 AM.