- Thread starter
- #21
No, no needle movement at all. New mechanical gauge will be here tomorrow, the know for sure what oil pressure is.
Oil Pressure Gauge?
- Thread starter bkdraft
- Start date
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You have oil pressure because the oil pressure activates the internal Voltage Regulator that provides the working voltage for the circuit.
At low rpm you should see a slow flicker and at higher rpm the flickering increases.
Question: if you ground the gauge wire..... how much moves the needle, 1/4, 1/2, 3/4, full scale?
Warning: disconnect when the needle reaches full scale, if not you run the risk of frying the gauge (That's why there is a Voltage Regulator build in).
Do you have a analog voltmeter? What voltage do you see on the top of the sender when the engine is running?
The needle of your meter should swing between 0 and 12V, similar to the flicker from the test bulb.
Rudi
At low rpm you should see a slow flicker and at higher rpm the flickering increases.
Question: if you ground the gauge wire..... how much moves the needle, 1/4, 1/2, 3/4, full scale?
Warning: disconnect when the needle reaches full scale, if not you run the risk of frying the gauge (That's why there is a Voltage Regulator build in).
Do you have a analog voltmeter? What voltage do you see on the top of the sender when the engine is running?
The needle of your meter should swing between 0 and 12V, similar to the flicker from the test bulb.
Rudi
- Thread starter
- #23
Mechanical gauge came today, cannot get it to screw into block, hmmm. Assume The engine thread is metric and I need an adapter? Installed new correct OEM sender unit, still nothing on gauge. Hooked up light bulb and sender passes test. Ground the sender wire and dash gauge goes full over. Any more suggestions?
Last edited:
Cruiserdrew
On the way there
Be careful bkdraft-the threads are a very odd size. Something like BSPT (British standard pipe thread). You'll need an adapter to use with the mechanical gauge. Search for the actual size here on ih8mud which I have now forgotten. Summitt racing used to sell an adapter that would work with normal american 1/8 pipe thread.
Willing to bet you had a bad sender. Then grounding the wire and fried the gauge. Even a damaged fried gauge will show movement when grounded sometimes since you're throwing 12v at it.
- Thread starter
- #26
Are the gauges still available?
The resistance of the gauge should be 44 ohm.
- Thread starter
- #28
Ordered a gauge from Cruiserparts, only thing I have not changed out yet.
- Thread starter
- #29
Ok it was the dash gauge, bought a replacement and put it in this morning and all is working fine now. Thanks for all the help.
James
James
Hi Rudi, just wondering why the bulb flickers rather than just lights up dim or brighter as the voltage increases? Any details around that would be interesting to know.