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Re: [TR] TR6 temp gage issues

To: <triumphs@autox.team.net>
Subject: Re: [TR] TR6 temp gage issues
From: "dave n" <dave@ranteer.com>
Date: Sun, 30 Nov 2014 12:13:16 -0600
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
References: <D3.2A.04882.3775B745@cdptpa-oedge01>
yes, you are right.  got it backwards.  sorry.

I have a multi meter.  thatbs what I used.  was all external to the cars 
wiring.

will do some more testing today and report back.  I've gotten lots of 
suggestions!

-----Original Message----- 
From: Randall
Sent: Sunday, November 30, 2014 11:44 AM
To: 'dave n' ; triumphs@autox.team.net
Subject: RE: [TR] TR6 temp gage issues

> I replaced the temp sensor with an older one I had around,
> and as far as I
> know is working, same result.  tested it with hot water; get
> about 100%
> connectivity using my tester when cold; drops way off when hot.

There's something wrong with this picture.  The sender resistance should be 
relatively high when cold, and go down as it gets hot.

> hook up the used gages, voltage regulator, wire it up battery
> to vr (grounded)
> to gage to sensor in car, it pins right when the car is
> warmed up.  same for
> other gage.

How did you connect to the sender?  If it was through the car's wiring, I'd 
suspect a short to ground (or something wired into the
circuit that shouldn't be there).

I'd also suggest picking up a digital multimeter (DMM).  Even a fairly good 
one is a lot cheaper than replacing a part that doesn't
need to be replaced.  And the cheap ones (which will do) can be under $10. 
Here's one on Amazon that looks reasonable
http://tinyurl.com/lwr7yvf
Or the same thing on flea-bay
http://tinyurl.com/k595mho

And of course there's always Horrible Freight.

-- Randall

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