[TR] TR6 overheating puzzle

[John Macartney]

While the Triumph I'm talking about wasn't a TR6, I had a similar problem
with the combi instrument on a '73 2000 saloon. The engine temp and fuel
gauges on the combi clock both gave higher engine temp and lower tank
content readings. Wasn't anything I could find that was amiss on info going
into the instruments but I eventually traced it to a bad earth (ground) on
the instrument stabiliser. Fitted a new one and still the same result. In
the end and more out of desperation than anything else, I fitted a separate
wire from stabiliser to a good earth on the car body. Problem fixed! Gauges
worked fine after that and no more trouble. Might be just that simple?

Jonmac

-----Original Message-----
From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Tim
Gaines
Sent: 22 May 2014 18:52
To: triumphs at autox.team.net
Subject: Re: [TR] TR6 overheating puzzle

> you might sub the gauge from the spit, too.

Yeah, I just did that, among other things.  Good news but not complete
satisfaction.  First, the water temperature, according to our meat
thermometer, never gets above 165 degrees, even while the gauge goes beyond
3/4 level (never used to quite reach 1/2).  After swapping in the sensor
from the Spit, the result was the same.  Why is the hex head on that thing
metric (18 mm)?!  After swapping in the temp gauge from the Spit, the result
was the same again.  Now I've put the original gauge back (don't know
why--just seemed right), and I'm going to order a new temp sensor right now.
Tomorrow I think I'll attempt my drive to Athens, GA for some NCAA tennis.
Am I being reckless?

Thanks again for all the good responses,

Tim  

----- Original Message -----
From: Chip19474 at aol.com
To: mtgaines at presby.edu, triumphs at autox.team.net
Sent: Thursday, May 22, 2014 9:35:51 AM
Subject: Re: [TR] TR6 overheating puzzle


In a message dated 5/21/2014 9:59:51 P.M. Eastern Daylight Time,
mtgaines at presby.edu writes: 

Thanks for all the good suggestions. I'm pretty sure the timing and the carb
mixture are okay. Also, the fuel gauge seems to be reading accurately
(showing almost empty now and it is), so I'm not going after the voltage
stabilizer yet. I'm going to check the actual water temperature first thing
tomorrow. That makes so much sense; why didn't it occur to me?! If it isn't
all that hot, I'll sub in the sensor from my poor old Spitfire that hasn't
seen the road in two years. I just checked the VB catalog and the parts are
the same. If that doesn't do the job, then I guess I'll try retuning. 

Thanks again. 

Tim 

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