rScotty
Super Member
- Joined
- Apr 21, 2001
- Messages
- 9,492
- Location
- Rural mountains - Colorado
- Tractor
- Kubota M59, JD530, JD310SG. Restoring Yanmar YM165D
More info needed. Did you check the wiring between pressure light and sender? A bad connection will also cause that to happen.
Did you change to a different oil? Some of the new 0-30w synthetics are noticibly less viscous when cold. And is it an OEM or aftermarket filter? Are you willing to change both again?
Is this something that is definitely related to the oil & filter change or have you seen the light flicker before? Any other changes?
The problem with lights vs gauges is we always end up needing a dial gauge reading to know if the pressure light is faulty. It's common for mechanics just replace the pressure sender because it is cheap and most have no way to test it.
rScotty
LouNY
Super Star Member
- Joined
- Jul 4, 2015
- Messages
- 12,066
- Location
- Greenwich, NY
- Tractor
- Branson 8050, IH 574, Oliver 1550 Diesel Utility (traded in on Branson) NH 8160. Kioti CK2620SECH
Also what is the low rpm stop set to, 500 rpm or 850 rpm.
Roadworthy
Elite Member
Sometimes the pressure sensor will fail - I've had it happen. Temporarily install an oil pressure gauge to see what's really happening. In addition to oil pump and bearings there is a pressure relief valve spring which can get weak or fail. Troubleshoot before throwing money at your problem.
It’s old. Probably lots of wear Would be expensive to fix. Would it be out of the question to keep it idled high? I’m sorry but I don’t know an easy fix. Maybe others will have better suggestions. I’ve had old cars in the past do that till I traded them off.
I haven’t check the sensor, that is next and I’m probably going to get a pressure gauge and check as well. I’m not a mechanic so first time troubleshooting for this weekend warrior
- Joined
- Feb 21, 2003
- Messages
- 26,734
- Location
- SE Michigan in the middle of nowhere
- Tractor
- Kubota M9000 HDCC3 M9000 HDC
Replace the 'idiot light' with an analog gage. Idiot lights are just what they say... for idiots.
Unit is old and clearance are probably excessive so change to a heavier viscosity oil...
Unit is old and clearance are probably excessive so change to a heavier viscosity oil...
rScotty
Super Member
- Joined
- Apr 21, 2001
- Messages
- 9,492
- Location
- Rural mountains - Colorado
- Tractor
- Kubota M59, JD530, JD310SG. Restoring Yanmar YM165D
Updating my answer in #2 a week ago....
Did you check the wiring between pressure light and sender? A bad connection will also cause that to happen. Just trace the wire and tighten any connections. Sometimes just wiggling the connection will fix tha problem.
Did you change to a different oil? Some of the new 0-30w synthetics are noticibly less viscous when cold. Change the oil to something like a 15w-40 Rotella - that's the old standby for diesel engines. And does the engine have an OEM or aftermarket filter? Are you willing to change both filter and oil again?
Question....Is this something that is definitely related to the oil & filter change or have you seen the light flicker before you changed oil/filter? Have you tried just setting the idle a little higher? That is commonly done as engines get older.
The problem with lights vs the old style analog dashboard gauges is we always end up needing the numbers available on an old style gauge reading to know if the pressure light is faulty. And to know if there is a problem or if it is just a case of low idle or lower pressure due to normal wear. If the oil is flowing well, an engine doesn't need much pressure. Most of the internal pressure it needs is generated by the movement of the inner parts and does not show on a gauge.
Finally, those idiot lights often suffer from bad senders. It's common for mechanics just replace the pressure sender because it is cheap and quick to replace - and most have no way to test it anyway.
updated from a week ago,
rScotty
The light was on before I change the oil and oil filter, I purchased the oil for the new holland dealer, they didn’t have the filter so I had Napa cross match with the part number for the oil filter which I got from new holland dealer.
Also after I changed the oil was when the light would stay off if I idled a little higher
