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Author Topic: Too much oil pressure?  (Read 2627 times)

Offline cls12vg30

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Too much oil pressure?
« on: 12:41:59 PM / 22-Jun-04 »
Hey guys,
  Okay, I know what it means when my oil pressure is too low, but since yesterday my oil press. gauge has been reading excessively high, at the top line of the \"nominal\" section or occasionally above it?  I replaced the sending unit a few months ago and had to do a bit of splicing to get it wired up, might my sending unit be sending a bad signal?  What else would cause high oil pressure readings?

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1988 200SX SE V6
2015 Jeep Renegade 1.4T


Offline YellowPreludeR

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Too much oil pressure?
« Reply #1 on: 12:55:58 PM / 22-Jun-04 »
clogged lines? or dirt in the lines causes smaller holes and the oil to be building up pressure. I think a failing head gasket sometimes is a sign of high oil pressure if the oil runners are blocked. But then again your engine wont last long without oil, so you will really know. I cant think of anythign else, but dont let the head gasket scare you,  thats a MAJOR 1% iffie and it most probally isnt the problem.
--Yellow--
Current Car : 1984 BMW 533i Turbo /w custom M30B34
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Old ride : 1985 Nissan 200sx Turbo /w custom CA20ET
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Offline vg30e_x2_200sx

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Too much oil pressure?
« Reply #2 on: 01:35:41 PM / 22-Jun-04 »
Sounds to me like you need to check your splices Chris. It is acking like it\'s almost shorted.

If I were you I\'d pull the instrument cluster and test the signal comming from the harness. If this is faulty then check it at the sender. This will tell you if you have a bad splice or not.

At the connector the oil sender comes in on pin16. Use this and a ground.
Pin 16 is in the connector on the speedo side plug and will be in the top row. There is a gap with no wires in the diagram. The pins are listed like this

|10|4  |3  |15|  |16|5  |
|11|21|22|23|   |6  |12|
.................../
................../.

............this is the gap

here are the specs you need to check:

With the engine off and the ignition on a Volt/Ohm meter should read more than 73 ohms.
Engine running should read less than 50 ohms at idle.


If the reading is significatly lower at the cluster than at the sender you probably have a short somewhere.

Randy

San Jose, California U.S.A.