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oil pressure gauge indications jumping...sender?
I've done a quick thread search and haven't found my answer yet. My oil pressure gauge alternately pegs out high, bounces to nothing and then kind of back an forth...just started this yesterday. I'm guessing I probably need a new sender. Anyone have any other suggestions I can check out when I get time this weekend for me and the p-car??
Thanks, fellas Ryan
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To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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03-13-2003, 04:01 PM
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Try cleaning and tightening the spade terminal at the sending unit first.
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Robert Stoll 83 911 SC 83 944 |
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03-13-2003, 04:02 PM
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Robert,
That's what I'm talking about! Thanks for the tip...I was thinking there would be an electrical issue to checkout first. I don't have my manuals with pics handy this second and it's dark outside now. I'd like to take a quick look before I drive home...is the sender on top of the engine near the rear? Ryan
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To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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03-13-2003, 04:06 PM
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On my 83 it is on pass side just below the a/c compressor.
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Robert Stoll 83 911 SC 83 944 |
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03-13-2003, 04:09 PM
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Robert,
Thanks for the quick comeback. As we'd say in Arkansas...you are a 'good 'ol boy'!  Ryan
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To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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03-13-2003, 04:11 PM
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check the sender and gauge with a 20 dollar mechanical gage. i would park it until i knew for sure. on the 72 the sender is above the flywheel at the parting line for the case.
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72 911t grey/black mine 74 914 2.0 black/ tan hers 02 g500 black/black womanproof 01 f250 psd dirty the mule 60 correct craft starflite cool 69 correct craft torino hauls butt 72 correct craft ski nautique fun 66 vw 1500s will finish someday |
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03-13-2003, 04:25 PM
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Here's a quick shot.
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Robert Stoll 83 911 SC 83 944 |
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03-13-2003, 04:26 PM
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Navin Johnson
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you should also check the grounds at the instrument cluster....
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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03-13-2003, 04:36 PM
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Robert your pic must be of a later model. To find the sender on a '72, you need to remove the air cleaner housing, look dead center of the engine top, towards the front of the car. How do I know? Yeah, I had to change a sender last year...can you imagine one giving out after 30 years? Horrible quality these days!
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"Now, to put a water-cooled engine in the rear and to have a radiator in the front, that's not very intelligent." -Ferry Porsche (PANO, Oct. '73) (I, Paul D. have loved this quote since 1973. It will remain as long as I post here.) |
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03-13-2003, 04:58 PM
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Yeah Paul, mine is a backdated 83
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Robert Stoll 83 911 SC 83 944 |
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03-13-2003, 05:00 PM
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Hi Robert,
Checked outside with a flashlight. Mine's right where yours is located. Connections look ok, but could use a good going over with the wire brush this weekend. Tim, I was thinking of looking behind the cluster as well... Ryan
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To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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03-13-2003, 06:14 PM
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Anybody else ever experience this symptom and resolved it by cleaning up the various associated electrical contacts, avoiding a sender replacement?
Ryan
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To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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03-14-2003, 05:28 AM
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update:
I checked my wires behind the gauge itself in the cluster...everything looks beautiful. I've cleaned all contacts in the rear on the sender with a wire brush. They're beautiful now too, both power and ground. The gauge seems smooth and maybe working until pressure reaches around 40-50 psi (2500-3000 rpms when cold, ballpark) and then it just jumps up and pegs 140. When I get back down to idle it seems to settle around 20-30 psi like I'd expect. Any ideas? Should I just bite the bullet and get the new sender? Anything else I should try? Ryan
__________________
To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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03-17-2003, 01:25 PM
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I vote new sender...
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"Now, to put a water-cooled engine in the rear and to have a radiator in the front, that's not very intelligent." -Ferry Porsche (PANO, Oct. '73) (I, Paul D. have loved this quote since 1973. It will remain as long as I post here.) |
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03-17-2003, 01:51 PM
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1974 Porsche 911 2.7
