Posted by Sonnie on November 25, 2002 at 21:18:25:

In Reply to: Re: voltage stabilizer posted by PeterW on November 22, 2002 at 01:09:56:

Hi again PeterW,

I could only manage to surf once a day, so my reply could be late.

P:
- the temp sensor on "top of the inlet". Is this on top of the thermostat housing (ie. after the thermostat) with the outlet going to the top of the radiator???
- the temp sensor "at the side". Is this between the thermostat and the cylinder head ie. measuring the coolant temp before the thermostat??

S: Ah, yes I get it now. So these two senders send different condition. But what for? I don't think SII could be this sophisticated :)

P: Does this vehicle have after market electric cooling fans???

S: No. I have bought a used one, but I could not fit it. I will need to move the radiator forward, which needs new pipe, body work, etc.

P: Is it only the temp gauge your are having trouble with??
A faulty voltage regulator should also effect the fuel gauge.

S: My temp gauge always go right up to red after a while, but the wind stream from the radiator is normal and my water is not boiling. I also suspect that one of my temp sender is non original (besides the VR). The fuel gauge is normal, at least I think. Remember, I connect both gauges directly to 12V.

This is why I need a chart between resistance and temperature to see if my sender is correct.

P:
Sonnie, it could still be the voltage stabilizer if hard connected (soldered) to the dash circuit board as it may earth via the case.
On one leg you should have battery voltage, on the other a voltage "flicking" up and down (that is why a test light it good). I'm not sure of the average acceptable voltage but I would guess around 8v. This is where an analogue voltmeter is good - measure the low then the high and then average the reading for you supply voltage.

S: Well, it is bolted to the dash bracket. I have not been able to test it again. The last time I only do a resistance test and it shows 0. Is this correct? I will try to use a test pen next time.

P: Don't connect to 12v - this could damage the gauges, and if not, the gauge readings would be inaccurate.

S: Thanks for the warning.

P:
Let me do a search at work tomorrow and if I can find the supposed average voltage then I can help you with an electronic voltage stabilizer you can build yourself for under $10 using a 78XX voltage regulator (I have used these in the past when voltage stabilizers were no longer available).
S:
Ah, I get it again now. You were mentioning about transistor diodes. Let us just forget it, I am unable to find such VR in the after market. I had a burnt DC voltage adaptor and cannot find the diode replacement.

So, I think I am left with resistor option. What do you think?

Sonnie

• Re: Re: Re: voltage stabilizer PeterW Wed Nov 27 02:16:42 2002 (4)
  • Re: voltage stabilizer Sonnie Wed Nov 27 20:44:32 2002 (3)
    • Re: Re: voltage stabilizer PeterW Wed Nov 27 21:05:43 2002 (2)
      • Positive or Negative Earth Sonnie Thu Nov 28 04:23:54 2002 (1)
        • Re: Positive or Negative Earth PeterW Fri Nov 29 00:50:39 2002 (0)