fuel gauge ohm range - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old May 19th, 2005, 01:32 AM
naeirie's Avatar
naeirie
Status: Offline
Nilo Enerio
95 D90 ST #2571
Member
 
Join Date: Oct 2003
Location: SF Bay Area
Posts: 49
Registry
Question fuel gauge ohm range

Can anyone tell me the fuel gauge ohm range in a 1995 D90?

Thanks,
Nilo
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old May 21st, 2005, 10:06 AM
Mike Hippert's Avatar
Mike Hippert
Status: Offline
D-90Slut/Stalker,SNLPres
94 D-90 Grinding Rover
Member
 
Join Date: Sep 2003
Location: Manchester NH USA
Posts: 4,789
I think the senders for the 110s and the 90s are the same.

http://www.defendersource.com/forum/...8&postcount=29
__________________
Don't forget to
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
first then ask questions later! The loose nut behind the wheel
Reply With Quote
  #3  
Old May 22nd, 2005, 09:05 PM
naeirie's Avatar
naeirie
Status: Offline
Nilo Enerio
95 D90 ST #2571
Member
 
Join Date: Oct 2003
Location: SF Bay Area
Posts: 49
Registry
Thanks! Mike,

I found more info on this.

FULL - 19 OHMS
3/4 - 38 OHMS
1/2 - 67 OHMS
1/4 - 116 OHMS
Reserve - OHMS
Empty - 270 OHMS

All values are plus or minus 5 percent.

Nilo
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old May 28th, 2005, 10:10 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,231
Registry
I just checked my ex-MOD 90 and got 280 Ohms on the empty line and 14 Ohms filled to maximum level, so looks like they are the same.
Reply With Quote
  #5  
Old July 8th, 2005, 06:49 PM
TDI Guy's Avatar
TDI Guy
Status: Offline
Randy
2015 LR4
D-90 Source Vendor
 
Join Date: Sep 2003
Location: NJ
Posts: 4,573
Registry
John, did the readings you got come from a side mounted tank? I'm trying to figure out what vdo guage to get

Randy

Follow-up Post:

by the way, what is the best way to check mine? I have a meter but no idea how to use it...lol
__________________
Legend in My Own Mind.
Reply With Quote
  #6  
Old July 8th, 2005, 07:39 PM
JimC's Avatar
JimC
Status: Offline
Jim Cheney
NAS 110 #145
Site Team
 
Join Date: Sep 2003
Location: Stuttgart, Germany
Posts: 7,154
Registry
Hey Randy - I think you need to use the VDO sender for a VDO gauge. I'm sure the side tank and rear tank senders are identical.

I used VDO in the dash, and put the Tdi clock plus 2 factory fuel gauges in the center location where the NAS lighter, hazard, and clock were. The fuel gauges are interchangeable and each one registers correctly no matter which sender its hooked up to.
Reply With Quote
  #7  
Old July 8th, 2005, 09:25 PM
TDI Guy's Avatar
TDI Guy
Status: Offline
Randy
2015 LR4
D-90 Source Vendor
 
Join Date: Sep 2003
Location: NJ
Posts: 4,573
Registry
Is there a way to use the stock sender and some resitors or something? I am not tooo electrical savy but with some advise I could do it.

So Jim, you just kept the stock fuel gauges and changed everything else right? I want to get an EGT gauge some day too.
__________________
Legend in My Own Mind.
Reply With Quote
  #8  
Old July 8th, 2005, 09:47 PM
JimC's Avatar
JimC
Status: Offline
Jim Cheney
NAS 110 #145
Site Team
 
Join Date: Sep 2003
Location: Stuttgart, Germany
Posts: 7,154
Registry
I'm not super-electical savvy either, so I'd guess that the resistor trick would work, but I'm not the one to figure it out.

My gauge set-up consists of VDO EGT, VDO Oil Pressure, VDO Coolant Temp, and stock speedo in dash. 2 stock fuel guages and stock Tdi clock in the center. My cig lighters and heated seat switches are in the extra space in the tuffy cosole.

All I had to do to create the set-up was to change out the coolant and pressure senders, stick the EGT sender in the EGR blockoff, and add the extra wiring for the extra fuel guage.

On a side note, my manual fuel switching valves are set up so that they point toward the guage which the engine is drawing fuel from. I dunno if you've already set up dual tank plumbing, but I dont recommend the 6 port electrically switched valve from JC Whitney. Its not what I would call Rover-worthy.
Reply With Quote
  #9  
Old July 8th, 2005, 10:39 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,231
Registry
Quote:
Originally Posted by TDI Guy
John, did the readings you got come from a side mounted tank? I'm trying to figure out what vdo guage to get

Randy

Follow-up Post:

by the way, what is the best way to check mine? I have a meter but no idea how to use it...lol
Yes. A side mounted tank. You use an Ommeter. There are three leads at the tank. One to ground. A second to the gauge and a third for the low fuel warning light. Discnonnect the gauge lead and measure the resistance from the tank terminal to ground.

I think the VDO gauges with the 240 to 33 Ohm range should work well. It will show above full when full and reach empty a little earlier on the gauge. But I think it will be close enough.

If you wait six months, I'll probably get one and report back. I got the Vision series Tachometer and it is so much nicer than the stock gauges, I'm planning on switching them all.
Reply With Quote
  #10  
Old July 9th, 2005, 04:22 AM
naeirie's Avatar
naeirie
Status: Offline
Nilo Enerio
95 D90 ST #2571
Member
 
Join Date: Oct 2003
Location: SF Bay Area
Posts: 49
Registry
Here's more info in AllDataDIY.com for the 95 D90. I hope it helps.

Test Procedure
1. Wiring - Check connections on sending unit and rear of fuel gauge for tightness and lack of corrosion. Check for ground continuity on black and black/green wires at sending unit (2 wires, one connection).

NOTE: Ground point for fuel gauge sending unit and fuel pump is underneath left hand side of headliner at the rear.

2. Multifunction unit - With an accurate-voltmeter measure stabilized voltage at disconnected green/black wire at sending unit or at rear of gauge (right hand gauge stud as viewed from rear of binnacle). Specification: 10.0 +/- .25 V with the ignition switched on. Replace multifunction unit if out of tolerance.

3. Gauge - Using a 0-500 ohm variable resistor (locally supplied) and an accurate ohm meter perform the following tests:

A) Adjust the variable resistor to 19.0 ohms. Connect one lead to the green/black wire disconnected from the sending unit and the other lead to vehicle ground. Switch on the ignition and wait two (2) minutes. The gauge should indicate in the full range.

B) Adjust the variable resistor to 270 ohms. Connect as above. The gauge should indicate empty.

C) Check several intermediate values as found on the table below:

FULL - 19 OHMS
3/4 - 38 OHMS
1/2 - 67 OHMS
1/4 - 116 OHMS
Reserve - OHMS
Empty - 270 OHMS



NOTE: All values are plus or minus 5 percent.

Replace the gauge assembly if needle position does not match the appropriate resistance.

4. Sending unit - The sending unit must be checked if the gauge tests OK (Step 3). With a full tank of fuel, measure the resistance of the 7 sending unit with an accurate ohm meter (wiring disconnected).


Specification: 18.8 - 19.6 ohms. If not, drain fuel tank and remove sending unit.

CAUTION: Use extreme care when transferring fuel. Use only approved fuel storage containers. Test the removed sending unit with an ohm meter using the values from the table in item # 3. There may be no breaks or opens as the float arm is moved from full to empty and vice-versa. Replace the sending unit if found to be electrically out of tolerance or mechanically damaged.

NOTE: In cases of apparently stuck sending units or when replacing one with a new part, ensure that the float ball is snapped into the rod with the larger part of the ball facing forward (toward the front of the car).
Reply With Quote
  #11  
Old September 29th, 2005, 03:37 PM
TDI Guy's Avatar
TDI Guy
Status: Offline
Randy
2015 LR4
D-90 Source Vendor
 
Join Date: Sep 2003
Location: NJ
Posts: 4,573
Registry
Well I would love to change my fuel guage to match the rest of my vdo guages... Has anyone done this?
__________________
Legend in My Own Mind.
Reply With Quote
  #12  
Old September 29th, 2005, 08:25 PM
jaherring's Avatar
jaherring
Status: Offline
Jason Herring
94 D90 ST #1253
Member
 
Join Date: May 2004
Location: San Pedro, CA, USA
Posts: 582
Quote:
Originally Posted by Red90
Yes. A side mounted tank. You use an Ommeter. There are three leads at the tank. One to ground. A second to the gauge and a third for the low fuel warning light. Discnonnect the gauge lead and measure the resistance from the tank terminal to ground.

I think the VDO gauges with the 240 to 33 Ohm range should work well. It will show above full when full and reach empty a little earlier on the gauge. But I think it will be close enough.

If you wait six months, I'll probably get one and report back. I got the Vision series Tachometer and it is so much nicer than the stock gauges, I'm planning on switching them all.
This was a timely thread - I was just shopping for gauges. You know, I was looking at those VDO Vision series gauges and thinking how nice they'd look in my dash... do you have any photos of your install? How do they look at night?

One question, though: does the speedo come with an odometer? The description I read mentions trip odometer, but not odometer-odomenter. It would also be nice if the speedo came in dual-unit miles/kilometers since I like to take my truck to Mexico & don't want to run afoul of the federales....no sense of humor, that bunch.
Reply With Quote
  #13  
Old September 29th, 2005, 09:29 PM
TDI Guy's Avatar
TDI Guy
Status: Offline
Randy
2015 LR4
D-90 Source Vendor
 
Join Date: Sep 2003
Location: NJ
Posts: 4,573
Registry
Jason, I have all the guages changed to the visions exept the fuel. THey don't even compare to the stock crap. They are 20 times as bright at night and very clear. You will be very happy and wonder how you did without. THe speedo has a trip and an odometer. IT has a button to toggle between the two.

I will take pics soon for you.
__________________
Legend in My Own Mind.
Reply With Quote
  #14  
Old September 29th, 2005, 09:29 PM
Buckon37s's Avatar
Buckon37s
Status: Offline
Buck
Re-Fendered 90
Member
 
Join Date: Oct 2003
Location: Temecula, CA, USA
Posts: 3,376
Quote:
Originally Posted by TDI Guy
John, did the readings you got come from a side mounted tank? I'm trying to figure out what vdo guage to get

Randy

Follow-up Post:

by the way, what is the best way to check mine? I have a meter but no idea how to use it...lol
Hey,

I have the VDO Vision fuel gauge for the side mounted tank. Same as you have. I replaced all the gauges with Vision, Water Temp, EGT, and Tach. If you want the Fuel one I can send it to you, but you have to come up with a way to cover the hole left in my dash, and throw me a few bucks, or police support for the next time I am arrested.

edit: I found lousy pics
Attached Thumbnails
Click image for larger version

Name:	P1010322.JPG
Views:	342
Size:	67.4 KB
ID:	3943   Click image for larger version

Name:	steering.JPG
Views:	319
Size:	69.4 KB
ID:	3944  

__________________
2009 King of the Hammers

BUCK Wild Racing
Driver: Me
Co-driver: Pat Quirk
Team 911

Rover Tracks
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
PSC
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
DJ Safety
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
West Coast Rovers
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reel Driveline
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Made it further than half of the other guys, but the Hammers won.
Reply With Quote
  #15  
Old September 30th, 2005, 12:49 PM
jaherring's Avatar
jaherring
Status: Offline
Jason Herring
94 D90 ST #1253
Member
 
Join Date: May 2004
Location: San Pedro, CA, USA
Posts: 582
Has anyone seen the Millenium gauges in person? They sound pretty cool - different color day/night (see attached). My truck is white - might look even better..

http://www.egauges.com/vdo_grou.asp?...illenium&Cart=
Attached Images
  
Reply With Quote
  #16  
Old September 30th, 2005, 01:29 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,231
Registry
Tachometers and speedos are the wrong size.
Reply With Quote
  #17  
Old September 30th, 2005, 01:48 PM
jaherring's Avatar
jaherring
Status: Offline
Jason Herring
94 D90 ST #1253
Member
 
Join Date: May 2004
Location: San Pedro, CA, USA
Posts: 582
ah, you're right, my bad.
Reply With Quote
  #18  
Old September 30th, 2005, 03:23 PM
TDI Guy's Avatar
TDI Guy
Status: Offline
Randy
2015 LR4
D-90 Source Vendor
 
Join Date: Sep 2003
Location: NJ
Posts: 4,573
Registry
David, I will get you a guage blank off and what ever you need for bail money next time...lol Shoot me an email.
__________________
Legend in My Own Mind.
Reply With Quote
  #19  
Old November 17th, 2007, 07:01 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,231
Registry
Quote:
Originally Posted by Red90
I just checked my ex-MOD 90 and got 280 Ohms on the empty line and 14 Ohms filled to maximum level, so looks like they are the same.
I've just install the VDO gauge, 301-105 (240-33 Ohm range). IMO, the working range is better than the stock gauge. I measured the sender when out. It shows 330 to 13 ohms when touching the stops.
Reply With Quote
  #20  
Old November 17th, 2007, 07:16 PM
Hans's Avatar
Hans
Status: Offline
Hans Haase
The D-90.com Lab Rat
Member
 
Join Date: Oct 2003
Location: Long Island, NY
Posts: 2,381
I just ended up going with Autometers all around. They have programmable fuel gauges that work with any sender. Made my life a lot easier, and since they are run by a stepper motor it also has a buffer built in so they don't bounce at all.

-Hans
__________________
My oil line fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
My 100k stopped odometer fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
fuel

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
fried fuel pump mattdh Defender Technical Discussions 2 July 13th, 2012 02:55 PM
300 Tdi Egt Q?????? Buckon37s Defender Technical Discussions 37 July 11th, 2012 11:26 AM
Fuel gauge - no reading JackW Defender Technical Discussions 2 October 11th, 2005 03:50 PM
95 won't start, possible fuel priming issue? jcasteel Defender Technical Discussions 1 March 15th, 2005 09:45 AM
Help wth Fuel Gauge (that works sometimes) ToyCrusher Defender Technical Discussions 14 October 20th, 2004 08:43 PM


All times are GMT -5. The time now is 03:21 PM.


Copyright