nassas
Part of things
Posts: 214 
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the temperature needle is not going up, Is it safe to drive?I regularly check the water level its stable and does not need topping up. I'm thinking temp transmitter switch?
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On a rally you normally have a plethora of gauges. On my rally car I have none, in fact the speedo didn't work for a couple of years. It'll be fine.
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fulvia1436
Club Retro Rides Member
Finally started a thread for my Fulvia life
Posts: 341
Club RR Member Number: 63
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temperature not going upfulvia1436
@fulvia1436
Club Retro Rides Member 63
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the temperature needle is not going up, Is it safe to drive?I regularly check the water level its stable and does not need topping up. I'm thinking temp transmitter switch? Does the engine warm up? eg. does the heater produce warm air? If not, your thermostat is stuck open. Running the engine below temp spec can damage it, and will ruin performance |
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'59 Austin A40, '59 VW Beetle, '63 Mk1 Cortina, '57 Austin Gypsy, '68 Fiat 850 Coupe, '68 Alfa Duetto Spider, '72 Lancia Fulvia 1.3S, '73 Lancia 2000 Sedan ie., '72 Lancia 2000 Sedan, '67 Lancia Fulvia 1.3, '83 VW Passat GL5 Estate, '81 Volvo 245 Estate, '85 Lancia Thema 8V Turbo Estate, '99 Lancia Kappa 20V Turbo Estate, '00 VW Sharan VR6, '06 Fiat Multipla 1.9 JTD, '10 Fiat Multipla 1.9 JTD, '66 Lancia Fulvia 1.3
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As fulvia1436 says check the engine temp is going up, run the engine and feel the radiator hoses they should get warm within a few minutes, I think its the lower one which gets hot first, until the thermostat opens then the radiator and both hoses warm up as water flows. Running with a stuck thermostat(open) or without one at all,is only a problem during warm up of the engine once the engine is up to temperature the thermostat should be fully open anyway. If the radiator gets warm right across it and everything is running fine then its a sensor or gauge problem.
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Rich
Club Retro Rides Member
Posts: 6,237
Club RR Member Number: 160
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temperature not going upRich
@foxmcintyre
Club Retro Rides Member 160
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Running with a stuck thermostat(open) or without one at all,is only a problem during warm up of the engine once the engine is up to temperature the thermostat should be fully open anyway. . Kind of. Without a thermostat the engine coolant lower value isn’t regulated so on a long continued speed run the coolant temperature can drop too low to maintain engine efficiency. Otherwise manufacturers wouldn’t bother to fit them at all. So it is an issue long term if the fault is the thermostat. Some cars also can have overheating issues caused by lack of a thermostat, not overly relevant here but someone had removed the gubbins from the stat housing on our E28 which is a bypass flow type, so the coolant is not always being directed in the correct path causing half the coolant to flow through the radiator and half to circulate back through the engine, regardless of its temperature. (The actual issue in this instance that someone was trying to ‘fix’ was a failed viscous fan coupler but they had seen the fan was going round and just assumed ‘oh that must be working’ and gutted the stat) Anyway, auto tech lesson over, some good pointers in diagnosing the issue already posted  |
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nassas
Part of things
Posts: 214
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Hi All thanks for the responses, the radiator warms up, the heater blows warm air, all pipes below the radiator and above the radiator are hot.
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find the sensor, remove the wire and earth it. If the gauge moves right up then the gauge is working and the sensor is fubared.
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Its not broken, its resting!
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