360 360 oil pressure sensor

Why did you replace it to begin with, Same problem?


I’m no pro but I would never install used part for an application like this. Like implanting a used defibrillator in a patient, plus new part is not expensive.

-ray


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Sorry my misunderstanding. Pressure same when warm both at idle and driving? No change at all?


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I do a lot on my car but have not had to replace the oil pressure sender.

- Check out post #6 in this thread. If it’s correct then may be your problem.

Oil pressure
https://www.ferrarichat.com/forum/index.php?threads/Oil-pressure.493910/

-with car off and ignition on what happens to the needle, pressure should be at zero. If not then has to be electrical.

-you didn’t use thread tape, I may be wrong but I believe the seal is via a crush washer.

-then I’d check grounds.

-next I’d verify the pressure with a mechanical oil pressure gauge.


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Another thread on terminals of the sending unit. You probably connected to the wrong terminal.

360 Oil Pressure unit only one wire
https://www.ferrarichat.com/forum/index.php?threads/360-Oil-Pressure-unit-only-one-wire.611851/


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G = signal (correct connection for 360)
WK = warning light - not used on the 360 as the dash software calculates the warning light off the 'G' signal line.

 

As previously said, the G terminal is the correct one, so you may have another issue. Perhaps a new old stock sensor which has failed. High pressure = low resistance. Something is shorted. Doesn't sound like a thread (plumbers) tape issue.

Why did you change the sensor? Did you have the same problem before?

Check for damaged insulation on the wire. There is a connector behind the left hand seat which will help you break up the circuit into sections. Does the gauge show full deflection with the wire disconnected? (and not touching anything)

 

Sorry, this may be incorrect. I've seen this written on FChat, but I double checked on my own car and the gauge goes full scale with the sender wire disconnected. i.e. high resistance = high pressure. Don't believe everything you read on the forum

 

I changed the sensor and got the terminal backwards on reconnection. Needle on max all the time. Only 1 connection. Earth is through the sensor body. Remember, don’t use Teflon tape on the sensor threads...stops the sensor being earthed.

 

So, to recap...

The original poster knows the correct terminal to attach it to (see post #1). Telling him 4 times it's not on the right terminal is probably not going to help.

The defect changed or got worse with the fitment of a brand new sensor (see post #3).

High resistance (or open circuit) = high reading.

Therefore... Possibilities:

teflon tape used on the threads. Not sure it's an engine earthing issue as that probably would cause other problems)
faulty wire eventually broke
broken gauge got worse
brand new Ferrari gauge is broken (not impossible).

What happens if you put the wire straight to earth (ignition on)?

 

Nothing wrong with reiterating. The G post can be hard to see if the sensor screws in and is upside down...several folk have used Teflon tape resulting in complete isolation or partial earth.

 

ring vs pinion gear mesh ? ( bevel gear set)

 

item 1 on this
https://www.eurospares.co.uk/parts/ferrari/360-modena/transmission-pedals/lay-shaft-gears-40670

If noise exists on every gear and on acceleration - probably wear / alignment issue on the gear

 

My guess ( only a guess) is still # 1 .. the low torque from 1st and 2nd gear may not make it appear ( loud enough)

 

The roller bearings , diff , gear pinion gears

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Depending on part , you can get them manufactured ( non oem) ..

Also it could be just setting up diff with correct spacers, preload etc and checking impression on ring gear etc