I want to calibrate my gauges.
Senders are good, grounds aswell.
But they are wrong.

I expect to measure ohms resistance of the 2 senders (oil and temp) and move by hand the needle to the right value.
So that it will be ‘calibrated’.

Is that a stupid thinking ?


I am in europe, so in celcius.
But values in F are ok of course

Temp gauge : what is the first large mark between 0 and 3



The same for the temperature…



Thanks

 

I don't know what the first mark is but, if you don't have this data already, I hope it helps. Personally I'd use a variable resistor to set each gauge to their central resistance then, move the needle central. From what I can gather online, it looks like you can gently pull the needles off and push them back on in the correct position but I can't say for certain that it won't cause damage. I have done this on my old Fiesta with no issue but they are different cars and manufacturers.



The 40 PSI reading is approximately the 3 Bar reading and the 200F is our 100C.

 

The first thick bar on the oil sender is approximately 20psi.

When you're at a hot idle (meaning "idling after a long drive"), the oil pressure normally reads around that 20psi mark. When you're "under load" (meaning, "engine has been running for more than 15 minutes - while driving" ) the normal oil pressure will read about 3 on your gauge (about 40psi). Your oil pressure should never hit 5.4 (or about 80psi on a U.S. gauge).

 

Ok thanks. Will do that.

Shall I buy this of eBay ?

450 ohms 5 % 50 Watt

as 450 ohms is supposed to be 160’ F, I will be able to position correctly the gauge. Shall I buy other values to be sure ?

Or a variable one, but which one ? I am not that good in electricity

a link to eBay would be great.

 

From the figures in the FSM, I would have thought 160F would be around 300 ohms, however you would be best using the given numbers that relate to the main numbers on the gauge instead of the between lines.

It looks like you would need a resistor that can handle up to 5W which I can't readily find a good example of as a variable resistor so unless you could find anything, you might be better off getting some normal resistors to make up the resistances you need, just make sure they're rated for at least 5W.

I don't think there's much more I can suggest as past that, I'd be asking my brothers for more info.