924Board.org

horsleyflyer · Joined: 29 Sep 2005 Posts: 10 Location: guildford

Hi Folks,
The oil pressure on my standard 1984 924 has just dropped to a little over two bar at 3000 RPM. I was previously getting about one bar per thousand rpm. I'm assuming the usual suspects of oil pressure sender, oil pick up in the sump and oil pump. The car has covered a little over 140k and is not burning any significant amounts of oil. Could any of you give advice please ?

Thank you very much

HorsleyFlyer

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Bad oil filter, broken or cracked oil supply tube plastic elbow on the cylinder head, or defective oil pressure sender or wiring.

Peter_in_AU · Joined: 29 Jul 2001 Posts: 2743 Location: Sydney, Australia

electrical connections/grounds?
_________________
1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

Tigger937 · Posted: Mon Mar 27, 2006 6:13 pm Post subject:

horsleyflyer · Joined: 29 Sep 2005 Posts: 10 Location: guildford

Hi There,
Thanks for the ideas i'll go and check. The needle appeared to be showing a good pressure on start up and then flickerd and went down to two bar. I'll have a look at all the things you've suggested and get back.!

Paul · Posted: Tue Mar 28, 2006 9:51 am Post subject:

Also check the pressure relief valve (located on the oil pump).
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

horsleyflyer · Joined: 29 Sep 2005 Posts: 10 Location: guildford

Thank you all for your help. It was the the oil pressure guage earth, which I renewed and got an extra two bar !