Discussion
Typical, took the car for a good blat up to the Donnington bash on Sunday and now it's mis-behaving.
The temperature gauge seems to jump from it's normal range (0 - 90'ish) then jump off the scale.
Not had an in depth look yet but I would appear to be a sender / electrical fault, since the fans work ok (hence come on at the correct temp).
On this note, I assume that the temp gauge and otter switches are completely independant? Also, if the temp sender connection failed, what should the temp read, ie min or max (a hunch is making me think that it would read max, hence why it jumps from the normal range to max)..
Steve
The temperature gauge seems to jump from it's normal range (0 - 90'ish) then jump off the scale.
Not had an in depth look yet but I would appear to be a sender / electrical fault, since the fans work ok (hence come on at the correct temp).
On this note, I assume that the temp gauge and otter switches are completely independant? Also, if the temp sender connection failed, what should the temp read, ie min or max (a hunch is making me think that it would read max, hence why it jumps from the normal range to max)..
Steve
Yup had this! Fernies replaced the guage in the end (under warranty) but I'm not convinced the guage can have been at fault. It's basically a broken connection.
the way it works is that the sender grounds a proportion of the voltage, lower temp, more grounding. So, if it becomes disconnected there's no grounding and the needle goes off the scale. Better than not showing a problem.
Fernies replaced the wire on mine too, and I think that was the real culprit. I can't see how a broken guage would work at all! Watch out though if it's warranty work. I got charged a load of extra labour because "the job takes longer than TVR's book time" What's the point of that then?
Anyway, you're right, the otter switch is totally independant.
the way it works is that the sender grounds a proportion of the voltage, lower temp, more grounding. So, if it becomes disconnected there's no grounding and the needle goes off the scale. Better than not showing a problem.
Fernies replaced the wire on mine too, and I think that was the real culprit. I can't see how a broken guage would work at all! Watch out though if it's warranty work. I got charged a load of extra labour because "the job takes longer than TVR's book time" What's the point of that then?
Anyway, you're right, the otter switch is totally independant.
Cheers Xain,
I'll have a fettle tonight if I get time. I assume you mean MAX off the scale rather than MIN off the scale. Tis a good idea if it is MAX since my daily drive means that the temp rarely gets up to 50. Seeing it MAX off the scale sends the message home that something is up!!
Steve
I'll have a fettle tonight if I get time. I assume you mean MAX off the scale rather than MIN off the scale. Tis a good idea if it is MAX since my daily drive means that the temp rarely gets up to 50. Seeing it MAX off the scale sends the message home that something is up!!
Steve
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