Thread: Any ideas as to what this is??

Originally Posted by Dinty

G'day All, Well apparently the gizmo is a cut out switch, pecuilar to Diesel's only. It is in the circuit for the reverse lights, and it works on Oil pressure, if the engine is running and you select reverse gear the light will work (or should), if you stop the engine and leave it in reverse with the ignition ON the reverse light will not be on, I had this in the back of my mind and it was moved forward by Diana's comment re Leyland Boxer etc, anyway thats what it is, but that still doesn't help my problem with my Electric Oil pressure gauge LOL, maybe that sensor is U/S, anyway thanks for all the responses, cheers Dennis

Can anyone confirm this information maybe a wiring diagram perhaps Uncle Ho can come to the rescue.

G'day All, I don't know how much more confirmation you need but I don't consider it nessacery to ask anyone any further as the information came from a respected Land Rover mechanic of 35 years, so as far as I'm concerned I'm satisfied that the information is spot on cheers Dennis
PS I will also now be removing it from the engine as it's NFG to me.

Originally Posted by Dinty

G'day All, I don't know how much more confirmation you need but I don't consider it nessacery to ask anyone any further as the information came from a respected Land Rover mechanic of 35 years, so as far as I'm concerned I'm satisfied that the information is spot on cheers Dennis
PS I will also now be removing it from the engine as it's NFG to me.

Well I just bought another one of these and talking to the guy about it he said it is not for the reverse light circuit, and on closer inspection I would have to agree. With the engine off (no oil pressure) the contact is closed. So if you left the car in reverse with the ignition off the reverse lights would stay on. His suggestion is a temperature gauge sender????

G'day Folks

My suggestion is that it is a low oil pressure shut down switch, that works in tandem with an electric soleniod engine shut down, that is if oil pressure drops the engine will shut down,therefore saving the engine from destruction.

Or

An Engine Oil Fail Buzzer switch, same principle as the shut down switch but sounds a buzzer & light on the dash, often fitted to Buses and Earthmoving Equipt.



cheers

Originally Posted by lro11

Well I just bought another one of these and talking to the guy about it he said it is not for the reverse light circuit, and on closer inspection I would have to agree. With the engine off (no oil pressure) the contact is closed. So if you left the car in reverse with the ignition off the reverse lights would stay on. His suggestion is a temperature gauge sender????

Since it operates through a relay for the reverse light, that does not necessarily follow - just a matter of whether you use the normally open or normally closed contacts on the relay. In fact, since sensors that are closed with no oil pressure are far more commonly used (and hence available), it would make sense to use one, so the relay is energised when there is no oil pressure.

John