Td5 dash into tdi, handbreak light on dash..
- Thread starter MaxyMan
- Start date
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Reads right when the lights are on, when switched off the gauge drops down??
Hmm no idea lol,
td5 dash in 200tdi, temp gauge fault. - YouTube
Hmm no idea lol,
td5 dash in 200tdi, temp gauge fault. - YouTube
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- 10,639
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i'd say bad earth, add another to a bare bit of metal and see if it cures.
also go stick your heaterfan on full, does it do it too?
also go stick your heaterfan on full, does it do it too?
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Hmm, I did in fact run all new earths from the dash to under the bonnet. Should I run em all back to the battery or not really worth it?
I'll see what the heater does
nah, don't bother, that's the point of a neg earth vehicle. just test it first with a bit of wire from the gauge to anywhere metal, like the steering column would be handy. if it works, then you have an issue with your new earth
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check the voltage at the gauge - with various things on and off and report back
Voltage will change anyway with the different things on& off won't have to check for that, are you thinking gauge moving with the different amount of power it's getting and not the earth side of things?
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not if its a stabilised voltage - which it should be
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no point running earths to the battery.
on mine the gauges are all earthed together, check the bulkhead earth to the right of the brake. make sure it's nice and clean and tight.
if you don't want to fix it, then run a new earth from the gauges to say the steering column bolt.
on mine the gauges are all earthed together, check the bulkhead earth to the right of the brake. make sure it's nice and clean and tight.
if you don't want to fix it, then run a new earth from the gauges to say the steering column bolt.
The earths for the new dash all run to a new earth point under the bonnet so already has all earth side sorted. Didn't know if I just take the earth straight from the gauge to a point instead of joining into the loom with the other gauges.
The gauge moves on what power is being used, it sits correct when I have all things on and the vehicle is at about 13 volts area, when I have everything off so lights/heater/rad fan and at 14+volts it's reads really low.
The gauge moves on what power is being used, it sits correct when I have all things on and the vehicle is at about 13 volts area, when I have everything off so lights/heater/rad fan and at 14+volts it's reads really low.
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just test it with a bit of wire, one side to gauge earth, other to bare metal.. takes minutes and will rule it out
Retroanaconda
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There is no need for voltage stabilisers on 90/110 electrics. Series vehicles did use them though.
Good to see you got the gauges etc. working in the end. Hopefully cleaning up your earths will solve your issue here. Remember all the earths can affect each other, check the one from the gearbox to the chassis/battery. A good clean of that might help. I once had a 110 with a temperature gauge that moved depending on system load - cleaning up the main engine/gearbox to chassis earth sorted that.
Good to see you got the gauges etc. working in the end. Hopefully cleaning up your earths will solve your issue here. Remember all the earths can affect each other, check the one from the gearbox to the chassis/battery. A good clean of that might help. I once had a 110 with a temperature gauge that moved depending on system load - cleaning up the main engine/gearbox to chassis earth sorted that.
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i like to stick one on the chassis to battery, one from xfer to chassis and another engine to chassis
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so how does it regulate the voltage to voltmeters then. It needs a reference voltage.
Retroanaconda
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Not sure what you mean?
There is a voltage regulator in the alternator.
There is a voltage regulator in the alternator.
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the dash needs to work with a regulated and stabilised .
if the voltage fluctuated between 12 and 14,7 then when a guage reads 1/2 full, is it reading 6volts or 7.3?
or put it the other way a reading 6 volts will be half scale deflection or 3/8 deflection - on a temp guage, that could be significant
if the voltage fluctuated between 12 and 14,7 then when a guage reads 1/2 full, is it reading 6volts or 7.3?
or put it the other way a reading 6 volts will be half scale deflection or 3/8 deflection - on a temp guage, that could be significant
