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> temp gauge
arsprod
post May 17 2015, 04:26 PM
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The temp gauge above my fuel gauge isn't working. For the life of me I cannot find any mention of it in the Haynes manual I have or even in the owners manual. Where's the sending unit for this thing? 74 2.0
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type47
post May 17 2015, 05:28 PM
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QUOTE(arsprod @ May 17 2015, 02:26 PM) *

Where's the sending unit for this thing?


Located in the engine sump. Also called the "taco plate" so if you need to buy the temp sender, that's what you can search for and ask for. Same temp sender would be for the console temp gauge. Your combo gauge with oil temp was installed by the factory to those cars not equipped with the center console. Here's a pic of the taco plate:
Attached Image
Attached Image

Maybe you just need to verify the wire from the sender to the harness connector just below the battery tray.
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arsprod
post May 17 2015, 05:33 PM
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Thank you! I was looking at that yesterday though mine's not nearly so clean.
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914Sixer
post May 17 2015, 07:30 PM
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Wire is green with red stripe. Heat and time have caused most of the wires to get brittle and break under the sheath giving you no reading at the gauge.
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arsprod
post May 23 2015, 11:28 AM
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QUOTE(914Sixer @ May 17 2015, 09:30 PM) *

Wire is green with red stripe. Heat and time have caused most of the wires to get brittle and break under the sheath giving you no reading at the gauge.


Could it be green/black on 74? There's 1 wire under battery box that's not going to the fuel pump and it's green/black. From my reading in Haynes manual that's correct
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type47
post May 23 2015, 03:48 PM
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QUOTE(arsprod @ May 23 2015, 09:28 AM) *

Could it be green/black on 74?


http://www.pelicanparts.com/914/parts/Elec...lectric_74D.jpg

G8 and G9 are temp sender and temp indicator and the wire is indeed green/blk (track 53 and 54)

Legend: http://www.pelicanparts.com/914/parts/Elec...lectric_74F.jpg
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arsprod
post May 23 2015, 06:13 PM
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QUOTE(type47 @ May 23 2015, 05:48 PM) *

QUOTE(arsprod @ May 23 2015, 09:28 AM) *

Could it be green/black on 74?


http://www.pelicanparts.com/914/parts/Elec...lectric_74D.jpg

G8 and G9 are temp sender and temp indicator and the wire is indeed green/blk (track 53 and 54)

Legend: http://www.pelicanparts.com/914/parts/Elec...lectric_74F.jpg


Great thanks. So, I'm assuming if I either ground or put power to the wire going to the gauge it should give a reading or move? I get continuity to the taco but nothing back to the gauge.
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SKL1
post May 23 2015, 09:25 PM
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Get a new sending unit for the taco plate and put a new wire back to the gauge. I sent my gauge to North Hollywood Speedometer and had them put numerials on it and with a new sending unit works great! Now I actually know the temp!
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steuspeed
post May 24 2015, 01:08 AM
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QUOTE(SKL1 @ May 23 2015, 08:25 PM) *

... I sent my gauge to North Hollywood Speedometer and had them put numerials on it and with a new sending unit works great! Now I actually know the temp!



Good idea right there. Photo?
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arsprod
post May 24 2015, 06:57 AM
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QUOTE(SKL1 @ May 23 2015, 11:25 PM) *

Get a new sending unit for the taco plate and put a new wire back to the gauge. I sent my gauge to North Hollywood Speedometer and had them put numerials on it and with a new sending unit works great! Now I actually know the temp!


I like that idea - spend time making it work rather then tracking what's broken!
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arsprod
post May 24 2015, 07:44 AM
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This the correct part? http://www.egauges.com/ProductDetails.asp?...uctCode=323-055
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arkitect
post May 24 2015, 08:24 AM
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QUOTE(SKL1 @ May 23 2015, 08:25 PM) *

Get a new sending unit for the taco plate and put a new wire back to the gauge. I sent my gauge to North Hollywood Speedometer and had them put numerials on it and with a new sending unit works great! Now I actually know the temp!


Any pictures of this? Great idea.

Dave
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Java2570
post May 24 2015, 08:43 AM
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QUOTE(arsprod @ May 24 2015, 09:44 AM) *

This the correct part? http://www.egauges.com/ProductDetails.asp?...uctCode=323-055


That sender won't match the temp gauge in the combo gauge in your dash. The combo temp gauge needs a 200C sender and the VDO 323-055 is a 150C. I don't think a sender is available anymore for the combo gauge. If you place a WTB ad in classifieds, someone may have a good used one for you. You can also put in a VDO Cockpit gauge in your console or other location that can utilize the 323-055 sender.
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brant
post May 24 2015, 10:07 AM
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I am facing the same problem
is there anyway to test the sender without removing it?
maybe cold, then after the motor is warmed up?

haven't gotten under there yet to examine the wire
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bdstone914
post May 24 2015, 12:03 PM
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Measure the resistance from the center terminal to ground. It should change with temperature. It is very sensitive. Heat it or cool it. Usually not the sender that goes bad.

Open curcuit or 0 resistance it is bad. I tested one recently. I think it was about 200 ohms at room temp
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bdstone914
post May 24 2015, 12:08 PM
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QUOTE(Java2570 @ May 24 2015, 07:43 AM) *

QUOTE(arsprod @ May 24 2015, 09:44 AM) *

This the correct part? http://www.egauges.com/ProductDetails.asp?...uctCode=323-055


That sender won't match the temp gauge in the combo gauge in your dash. The combo temp gauge needs a 200C sender and the VDO 323-055 is a 150C. I don't think a sender is available anymore for the combo gauge. If you place a WTB ad in classifieds, someone may have a good used one for you. You can also put in a VDO Cockpit gauge in your console or other location that can utilize the 323-055 sender.



Yes 150 C is the correct sender. 200 C will not work. That sender has a shorter probe but is the correct thread. The original has straight terminal but you should be able to make that work.
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Java2570
post May 24 2015, 02:56 PM
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This thread has a ton of good oil temp info: http://www.914world.com/bbs2/index.php?showtopic=97987

Sorry, didn't see the post about redoing the calibration of the combo gauge before I posted my previous, that would be a great idea.
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arsprod
post May 24 2015, 05:55 PM
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Hmm... maybe just replacing wire is the answer
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SKL1
post May 24 2015, 06:36 PM
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Here's a picture of the gauge panel before I put it back in the car, with temp gauge in the middle.Attached Image
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arsprod
post May 31 2015, 07:56 AM
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So I've confirmed a connection from sender to gauge and no luck. I assumed it was the sender but based on bdstone914's comment I checked resistance and it looks OK. So, now I'm thinking it's the gauge (argh). Is there a test for the gauge?
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