Quick gauge check.....
Discussion
Being new to this TVR lark I just wanted to double check all is OK on my 97 400.
Temp is 70 +/-5 on a normal run (Fast A road, Motorways etc) and very quickly reaches 90 in traffic, at which point the fans come in.
Oil is usually arounnd 35psi.
Speedo is usually...............
Anyhow, just a quick thought about temperature in traffic.. Now my 400 has AC, which I am guessing will make the engine run hotter, so when I am stuck in traffic will it be bad for the engine, for me to sit there with the AC on full or is it designed to do this?
Temp is 70 +/-5 on a normal run (Fast A road, Motorways etc) and very quickly reaches 90 in traffic, at which point the fans come in.
Oil is usually arounnd 35psi.
Speedo is usually...............
Anyhow, just a quick thought about temperature in traffic.. Now my 400 has AC, which I am guessing will make the engine run hotter, so when I am stuck in traffic will it be bad for the engine, for me to sit there with the AC on full or is it designed to do this?
Same here - dont have AC but is exactly the same for me. The speed at which the temp rises in traffic it almost frightening. The fans should keep the temp steady rather than drop it right down again. So leave it running on your drive for 10 - 20 mins with the AC on to see the difference. You should the fans kick in and kick out keeping the temp steady....
Well that is supposed to happen. If you are worried get a fan override switch fitted - you can manually click in the fans at a lower temp preventing things getting too high.... This is what I do.
Cheers,
Paul
Well that is supposed to happen. If you are worried get a fan override switch fitted - you can manually click in the fans at a lower temp preventing things getting too high.... This is what I do.
Cheers,
Paul
The temp you've got is similar to myself in the winter. Summer driving gives me running temps around 85C. I've not found that the A/C raises the temperature significantly as it doesn't present that much of a load to the engine. In fact, when my otter switch (?) died the water temp got to 120C and turning on the A/C helped to bring this back down. The A/C seems to force the cooling fans to come on periodically.
Hmm, if the otter switch dies, the fans will never come on because it needs to work to complete the circuit. That's why the engine overheats without the switch.
And having AC on presents an extra load to the engine which should make overheating worse, in my view. If events are as you describe, something else is happening -- maybe the otter switch wasn't duff after all?
And having AC on presents an extra load to the engine which should make overheating worse, in my view. If events are as you describe, something else is happening -- maybe the otter switch wasn't duff after all?
sounds ok.
Don't trust the oil pressure gauge to give an accurate reading (mine is at 60, but that's just the gauge, apparently). The most useful purpose is to show that it isn't zero, when the problems start.
Can recommend the override switch.
Finally the speedos generally over-read. Mine over-reads by 8mph at 40 (indicated) rising to 15mph at indicated speed 130. Testing done with a GPS (on the continent, of course).
All part of the fun
R
>> Edited by yum on Thursday 14th February 11:47
Don't trust the oil pressure gauge to give an accurate reading (mine is at 60, but that's just the gauge, apparently). The most useful purpose is to show that it isn't zero, when the problems start.
Can recommend the override switch.
Finally the speedos generally over-read. Mine over-reads by 8mph at 40 (indicated) rising to 15mph at indicated speed 130. Testing done with a GPS (on the continent, of course).
All part of the fun
R
>> Edited by yum on Thursday 14th February 11:47
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