Oill presssure sender.

[TVRleigh]

Will the oil pressure sender work with fuel,

As I have a cunning plan.
Have a switch to toggle between oil and fuel pressure on the one gauge.

Would this work.

Thanks
Leigh

[tempus]

hi,in theory yes,in practice no,differences in pressure in both systems are too far apart without having a digital gauge and even then problematical,sorry.Tempus

[TVR 3X]

Yes - I have a second dial down by the drivers-knee with an oil temp gauge.

The fuel PG is taken off with a tee from the cold-start injector.

Russ

[leorest]

TVR 3X said:

Yes - I have a second dial down by the drivers-knee with an oil temp gauge.

The fuel PG is taken off with a tee from the cold-start injector.

Russ

Just to clarify. For a fuel pressure readout are you using the same type of gauge and sensor as the original oil one?

[tempus]

tempus said:

hi,in theory yes,in practice no,differences in pressure in both systems are too far apart without having a digital gauge and even then problematical,sorry.Tempus

to clarify injection rail pressure runs between 35-37 psi{lucas}1/2psi difference can be important oil pressure can vary 5psi no worries so to run both of same gauge does not seem worth it,better to run a second gauge calibrated suitably.Tempus

[TVR 3X]

leorest said:

TVR 3X said:

Yes - I have a second dial down by the drivers-knee with an oil temp gauge.

The fuel PG is taken off with a tee from the cold-start injector.

Russ

Just to clarify. For a fuel pressure readout are you using the same type of gauge and sensor as the original oil one?

Yes - the same pair from VDO.

I can see the fuel pressure vary according to the throttle/plenum vacuum as it affects the regulator - so I think it works. I am careful never to run out of fuel so I have never seen it read zero under running conditions - but it is a useful diagnostic check on fuel flow/pressure.

Russ

[TVRleigh]

tempus said:

tempus said:

hi,in theory yes,in practice no,differences in pressure in both systems are too far apart without having a digital gauge and even then problematical,sorry.Tempus

to clarify injection rail pressure runs between 35-37 psi{lucas}1/2psi difference can be important oil pressure can vary 5psi no worries so to run both of same gauge does not seem worth it,better to run a second gauge calibrated suitably.Tempus

Well my current Oil pressure gauge goes to 100 PSI.

And its only one wire, and they are not checked constantly, would be just hany to know you have pressure at a flick of a switch, with out plumbing in 1 or 2 extra gauges.

[gsx600]

Leigh
You would need to fit a sender to convert to the electrics sensor that the oil pressure guage uses.

I just have another guage (mechanical) attached to the cold start injector that monitors the fuel pressure guage, and this in theory could be brought in to the dash area, but I leave mine in the engine bay, so that if I get any probs I can instantly check fuel pressure and rule that out. At one point I also had a mechanical oil pressure guage T'd into the system doing the same thing (a Tims guage), but removed as now oil pressure guage is working correctly in car (twas a bad connection on the sender causing all sorts of havoc)

[tvrscotty]

Yes, it will work. Great idea. All of the vendors I researched for my fuel flow issue used the same sensor for fuel and oil. With both sensors being made by VDO, a switch would work well to select the desired reading. The sensor is only a variable resistor, feeding into the gauge. There's no way to blow out the gauge. As long as the pressure doesn't exceed the rating of the sensor, it will be fine too.

[TVRleigh]

Hi Paul,

I did relise I would need to use the same sender unit.

it should not be hard to make a adaptor on the Cold start hose, to fit the same sender.