Temp gauge issue - Defender Source
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  #1  
Old May 31st, 2015, 10:40 PM
bababoris
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Boris Kogan
1993/Defender 110
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Temp gauge issue

I have a Canadian number 24 Defender 110. It is all original. I hardly drive it. It has about 121k km on it. Here is my issue.
When I start and let the truck warm up the temp gage jumps into the red zone after running for 2-3 min. I check coolant* before I drive and it's always full. I am trying to figure out if I need to flush my radiator to insure proper water circulation or I have a bad temp gage, or perhaps something else is cause the team to spike. Thanks in advance
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  #2  
Old May 31st, 2015, 10:45 PM
javelinadave
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Boris,
You have an electrical issue with your sender, gauge, wiring or a combo of them. I would start with double checking the grounding of the gauge and go from there.
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  #3  
Old May 31st, 2015, 10:59 PM
bababoris
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Boris Kogan
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Thanks. Is that something a mechanically challenged person could figure out how to troubleshoot?
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  #4  
Old May 31st, 2015, 11:07 PM
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Originally Posted by bababoris View Post
Thanks. Is that something a mechanically challenged person could figure out how to troubleshoot?
Find the temp sender located on the thermostat housing and see that the wire is making good contact. Pull the connector off and look for corrosion. Beyond that you may want to hit up and auto electrical shop. They can diagnose it faster than I could type what to try next.
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  #5  
Old May 31st, 2015, 11:36 PM
bababoris
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Boris Kogan
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Got it. Thank you sir
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  #6  
Old August 20th, 2015, 06:36 PM
bababoris
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Boris Kogan
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Looks like both the gage and the sending unit were bad. Getting both replaced.
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  #7  
Old August 20th, 2015, 06:49 PM
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Ditch the LR crap and buy VDO gauges and senders.
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  #8  
Old August 20th, 2015, 06:54 PM
bababoris
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Boris Kogan
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They guy at the shop is sourcing a gage to keep the original look
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  #9  
Old August 21st, 2015, 11:29 AM
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Marc Bourget
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The VDO gauge wont change the original look and will get you a reading with numbers which is more accurate. When I replaced both the gauge and sender I replaced the signal wire at the same time with a bigger gauge. Never had an issue since.
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  #10  
Old September 4th, 2015, 03:19 PM
bababoris
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Boris Kogan
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So I got my truck back. Guys at Huntington service in So Pasadena were great. They replaced the gage and sending unit but could not find a gage that looked close enough to the original. Attaching a pic of the new gage. They said something about the older gages not being able to work with sending units wherr they had to account for higher Temps that defender run. Or something like it. I kept the original gage. Any chance the original gage can be repaired? And should I call around defender parts stores to see if I can find an original working gage and sending unit?

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  #11  
Old September 4th, 2015, 03:27 PM
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Scott T
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Quote:
Originally Posted by bababoris View Post
So I got my truck back. Guys at Huntington service in So Pasadena were great. They replaced the gage and sending unit but could not find a gage that looked close enough to the original. Attaching a pic of the new gage. They said something about the older gages not being able to work with sending units wherr they had to account for higher Temps that defender run. Or something like it. I kept the original gage. Any chance the original gage can be repaired? And should I call around defender parts stores to see if I can find an original working gage and sending unit?
They said the VDO Stuff is not available any more?

Check the FAQ article..

D-90 FAQ - Interior & Comfort: Instrumentation

From FAQ Article:

VDO Vision Temperature Gauge: 250 degrees F, 310 105
VDO Sender, 250F, 5/8-18UNF, 323 422

(Looks like eGauges have both of these in stock)

As well as this thread for more VDO info..

http://www.defendersource.com/forum/...ist-37620.html
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  #12  
Old September 4th, 2015, 03:41 PM
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Quote:
Originally Posted by bababoris View Post
So I got my truck back. Guys at Huntington service in So Pasadena were great. They replaced the gage and sending unit but could not find a gage that looked close enough to the original. Attaching a pic of the new gage. They said something about the older gages not being able to work with sending units wherr they had to account for higher Temps that defender run. Or something like it. I kept the original gage. Any chance the original gage can be repaired? And should I call around defender parts stores to see if I can find an original working gage and sending unit?

Attachment 128792
Wow ... that's ugly.

Hopefully they didn't charge you any money ... the devaluation of your vehicle is going to hurt enough.

VDO gauges are easy and cheap to source, they install on the existing wiring, have a replacement sender and it takes about 30 mins to change by a half competent DIYer.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #13  
Old September 4th, 2015, 03:44 PM
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Did it come pre-scratched from Walmart?
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  #14  
Old September 4th, 2015, 03:45 PM
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Kevin Keith
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And the VDO gauge will match your other VDO gauge.
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  #15  
Old September 4th, 2015, 03:50 PM
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VDO Vision Black Engine Temperature Gauges (Electrical) - eGauges.com

$45 including sender...
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #16  
Old September 4th, 2015, 03:54 PM
bababoris
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Boris Kogan
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I don't want to bash the guys there. I think they really tried. I just sent them the link to the VDO guage that looks like the original. Its also half the cost of the one they installed. They said they will look into it. Thank you all for your feedback. I am a crappy DYIer so will let these guys fix it. Will keep you posted. Thanks again
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  #17  
Old September 4th, 2015, 03:57 PM
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I've just realized this is a 110 .. sorry to mock your misfortune but the 110 has a device on the back to mask the temp readings. Early buyers complained that the gauge moved and LR added a circuit to prevent the gauge reading properly.

NAS Defender 110 temp. gauge

This needs to be removed if it hasn't already. I'd be hugely surprised if your truck overheated after 2-3mins running ... more likely an electrical fault, especially as you rarely use it, likely some minor corrosion,

You really need to take this to someone knowledgeable as the work done is clearly not in keeping with the vehicle and their explanation doesn't stand up to scrutiny.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #18  
Old September 4th, 2015, 04:24 PM
bababoris
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Boris Kogan
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Just spoke to Rovers north in Vermont. They can order an original gauge for $319. Ouch...
They also have a sender that works with it for $9. I am leaning towards getting this original guage ...
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  #19  
Old September 4th, 2015, 04:26 PM
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That is a must, and oil cooler lines...I was lucky last year when my line blew and sprayed all over the exhaust manifold. I knew exactly what was happening and shut it down right away as soon as I saw the clouds coming out the back.

NAS Defender oil line upgrade
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  #20  
Old September 4th, 2015, 04:46 PM
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Quote:
Originally Posted by CDN38 View Post
That is a must, and oil cooler lines...I was lucky last year when my line blew and sprayed all over the exhaust manifold. I knew exactly what was happening and shut it down right away as soon as I saw the clouds coming out the back.

NAS Defender oil line upgrade
The VDO gauge is used by many people here. Its accurate, reliable and is similar looking to other gauges.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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