Sump oil temperature sender


Topic Author
StevieJD
SSVC Member
SSVC Member
Posts: 32
Joined: Sat Jul 09, 2016 7:51 pm

Sump oil temperature sender

Post by StevieJD » Wed Dec 14, 2016 9:02 pm

I've got a VDO oil temperature gauge and sump sender fitted to the van. The system has never worked since I bought the van. :cry:
It's eventually got to the top of the 'To Do' list. Last night I checked the + and - to the gauge and they are good. The wire from the gauge to the sender was also checked and it's OK. So it can only be the gauge or the sender.
Has anyone got a sump sender fitted to their engine? I'd like to know the resistance range of the thermistor inside the sender and whether its a positive temperature coefficient - resistance increases as engine oil temperature increases or a negative temperature coefficient - decreases with temperature. I've tried searching the net, but didn't find anything.
If you have one fitted and could measure the resistance when the engine is cold and at normal running temperature, it would be greatly appreciated.

User avatar

readyboy61
SSVC Member
SSVC Member
Posts: 2851
Joined: Sat Jan 26, 2008 8:36 pm
Location: Suffolk

Re: Sump oil temperature sender

Post by readyboy61 » Thu Dec 15, 2016 11:10 am

Is it the type thats fitted in the sumpllate or in the actula engin case? i had one that was in the sump plate and it never moved, howver dropping it into boiling water would get a reading on the gauge. give that a go.
ohms range find the part number on the sender and check there website https://www.vdo-instruments.com/sensors.html
Fixing VWs in my sleep, im not the only one right?


Topic Author
StevieJD
SSVC Member
SSVC Member
Posts: 32
Joined: Sat Jul 09, 2016 7:51 pm

Re: Sump oil temperature sender

Post by StevieJD » Thu Dec 15, 2016 6:54 pm

It's on the sump plate. I found the OEM part number on the JK website and with that, managed to find some info on the VDO website. It's a NTC thermistor so resistance decreases as temperature increases. It should read around 36 ohms at 120 degrees. If anyone has got one on their sump plate and can measure the resistance when the engine is cold, it would be helpful.

User avatar

kevsplitty
SSVC Member
SSVC Member
Posts: 5720
Joined: Wed Sep 08, 2004 6:44 pm
Location: Sunny East coast !

Re: Sump oil temperature sender

Post by kevsplitty » Thu Dec 15, 2016 8:43 pm

I had one on my sump plate,was useless,so got one to go into an adapter on oil pressure switch,works a treat.
ImageImageImage


Dont walk take the bus!
Rutland Hardcore Posse 07/08/09 Zig2
Corton Hardcore camping posse 2006!

User avatar

type21f
SSVC Member
SSVC Member
Posts: 14736
Joined: Tue May 29, 2007 12:55 pm
Location: West Yorkshire

Re: RE: Re: Sump oil temperature sender

Post by type21f » Fri Dec 16, 2016 6:53 am

kevsplitty wrote:I had one on my sump plate,was useless,so got one to go into an adapter on oil pressure switch,works a treat.
Engine buider advised same location and type.
Works a treat..
1965 Type21f
Westfalia Hamburg Type155i 003 viewtopic.php?f=8&t=64012
1965 Devon Caravette, L360 L289 Hammock, Tent, M W Pop
Image
Peebles 1964 Devon Caravette Gentlux Pop

User avatar

redstar5
SSVC Member
SSVC Member
Posts: 100
Joined: Fri May 13, 2011 12:19 pm
Location: Spennymoor, Durham

Re: Sump oil temperature sender

Post by redstar5 » Sat Dec 17, 2016 4:52 pm

IMG_2771.JPG
I got some adaptors made for the blanking plate to the right rear of the casing. Sender screws into the middle hole. Been running it for a year now and it works well. Never had any luck with the sump ones.

User avatar

vwJim
SSVC Committee Member
SSVC Committee Member
Posts: 19809
Joined: Thu Apr 24, 2003 6:05 pm
Location: under a bus in Hampshire...
Contact:

Re: Sump oil temperature sender

Post by vwJim » Sat Dec 17, 2016 5:51 pm

I never put them in the sump, as the cable is too vulnerable plus the sump plate is a service item so better to have the sender somewhere you fit and forget it, like the T3 blanking plate.
Supplying quality in house designed items plus parts from SyncLink, Kennedy Clutches, & CB Performance. Also fitting service including modifications & mechanical upgrades.


Topic Author
StevieJD
SSVC Member
SSVC Member
Posts: 32
Joined: Sat Jul 09, 2016 7:51 pm

Re: Sump oil temperature sender

Post by StevieJD » Sat Dec 17, 2016 11:03 pm

Does anyone sell the adaptors?

User avatar

vwJim
SSVC Committee Member
SSVC Committee Member
Posts: 19809
Joined: Thu Apr 24, 2003 6:05 pm
Location: under a bus in Hampshire...
Contact:

Re: Sump oil temperature sender

Post by vwJim » Sun Dec 18, 2016 8:36 am

Of yours has the blanking plate, just take it off and drill / thread it. If it doesn't have one, you can't use one anyway.
Supplying quality in house designed items plus parts from SyncLink, Kennedy Clutches, & CB Performance. Also fitting service including modifications & mechanical upgrades.


flatbeat
SSVC Member
SSVC Member
Posts: 1894
Joined: Thu Oct 04, 2007 4:06 pm
Location: Gloucester

Re: Sump oil temperature sender

Post by flatbeat » Sun Dec 18, 2016 7:28 pm

http://images.thesamba.com/vw/classifie ... 236482.jpg

Joe Bence does them in billet alloy. Get them through TheSamba.
Packed a few belongings and headed out to Pirates Cove. In my buddy’s old grey Kombi we rolled until the gas got low.....

1965 11 Window aka 'Rustina'.
1961 Beetle.

User avatar

e m p i
Registered user
Posts: 5514
Joined: Fri Jan 28, 2005 3:51 pm
Location: Essex but I'm nothing like the twats on the telly.
Contact:

Re: Sump oil temperature sender

Post by e m p i » Sun Dec 18, 2016 7:52 pm

I bought a dump sender for my bug and noticed it pushed against the strainer plate and wouldn't tighten up properly. I called the (well known) place I bought it and their advice was to do it right up so it basically dented/pushed in the strainer plate :eek: Hmm, that'll be pushing it up into the pick up tube - no thanks. I drilled a hole in the strainer for it to fit through but let's face it, that's not ideal. It did work properly. Until I ripped the wire off on a speed hump :lol:
What a waste of time :lol:
On a plus note, the gauge looked cool under the dash :lol:
"...scum is scum wherever you go" D.C.I. Gene Hunt

0.018 reaction time:Empster July 2005 with a timing slip to prove it
Sooty wrote: You are a god Lee. :cheers:

User avatar

Who.Me?
SSVC Member
SSVC Member
Posts: 989
Joined: Thu May 15, 2014 8:13 pm
Location: West Sussex

Re: Sump oil temperature sender

Post by Who.Me? » Mon Dec 19, 2016 7:26 am

Do you have a particular need to know exactly what the engine temperature is, or do you just want to make sure it's not overheating?

If it's the latter; a Save My Bug dipstick does the job just as well. No need for a dial as it uses the existing oil pressure warning light to tell you when your oil is getting too hot (flashes) or has gone past a maximum temperature (solid light). It's adjustable so you can set the warning temperature and recalibrate it


henk
Registered user
Posts: 257
Joined: Mon Jul 07, 2014 4:03 pm

Re: Sump oil temperature sender

Post by henk » Mon Dec 19, 2016 8:32 am

I have on my bug also one in the sump and it never worked.
It seems like they don't get a good earth if you put it in the sump.

Henk!!!

User avatar

redstar5
SSVC Member
SSVC Member
Posts: 100
Joined: Fri May 13, 2011 12:19 pm
Location: Spennymoor, Durham

Re: Sump oil temperature sender

Post by redstar5 » Mon Dec 19, 2016 8:52 am

I did get a few spare blanking plates cut when I did mine, they are from 5mm stainless with an 8.5mm hole in the middle, I could tap them M10 if required.
PM me if you want one, I'll just need to cover the postage and packing cost
Cheers
IMG_2787.JPG


slippy8v
Registered user
Posts: 318
Joined: Wed Aug 10, 2016 9:56 pm

Re: Sump oil temperature sender

Post by slippy8v » Mon Dec 19, 2016 12:58 pm

Can some one put a photo up of the blanking plate in situ with the sender please.

Post Reply