No oil pressure reading?
03-01-2007, 09:50 PM
#16
Burning Brakes
Thread Starter
Originally Posted by WICruiser
If nothing happens when you ground the wires you have to determine if the problem is the wiring or the gage but it is clear that the gage is not providing the information intended so until you sort it out I would trust that the light is assurance that you do have oil pressure.
Cheers
Bernie
85S
01-10-2010, 06:12 PM
#17
6th Gear
Join Date: Oct 2004
Location: Simpsonville, SC
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I had oil pressure gage working only when oil was cold. After starting a cold car my gage would show pressure for a minute or so - then drop to zero. In summer - it usually never showed pressure ( cause "whatever was wrong" was already warm)
I changed the sender, reversed the sender wire ( any times), cleaned all grounds everywhere ( like 12 different places), checked continuity ( all good) from sender to 12 pn, to fuse panel,,,,,,eventually all the way to the connector under the instr pod.
The fix - the fix was after cleaning all the contacts on the flexible circuit board in the instrument pod. I pulled the pod and clearly all the fingers on the flexible circuit board were discolored from the years. I cleaned then all with an eraser head, plus a little electrical cleaner from radio shack - they brightened up alot! Put it all back together and Eureka! gage now it reads strong pressure all the time ! I love watching it move as I change RPMS from idle to running speed! PS - all the above troubleshooting was done over 2 years - I even had it looked at by a "pro shop" . My advice after all this - if your gage is working internittent or not at all: 1)pull the oil pressure sender, put a multimeter on it, put sone air pressure into the little hole with your air pressure compresser to see if it is changing resistance. If it is - pull your pod and clean all those contacts.
I changed the sender, reversed the sender wire ( any times), cleaned all grounds everywhere ( like 12 different places), checked continuity ( all good) from sender to 12 pn, to fuse panel,,,,,,eventually all the way to the connector under the instr pod.
The fix - the fix was after cleaning all the contacts on the flexible circuit board in the instrument pod. I pulled the pod and clearly all the fingers on the flexible circuit board were discolored from the years. I cleaned then all with an eraser head, plus a little electrical cleaner from radio shack - they brightened up alot! Put it all back together and Eureka! gage now it reads strong pressure all the time ! I love watching it move as I change RPMS from idle to running speed! PS - all the above troubleshooting was done over 2 years - I even had it looked at by a "pro shop" . My advice after all this - if your gage is working internittent or not at all: 1)pull the oil pressure sender, put a multimeter on it, put sone air pressure into the little hole with your air pressure compresser to see if it is changing resistance. If it is - pull your pod and clean all those contacts.
