Hi – Got the Subaru 2.2L conversion in my ’87 vanagon, built by Cesar and team at California Westy in El Cajon.

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The oil pressure light somewhat sporadically comes on, trying to diagnose. What I have done so far:

1. Replaced oil and oil filter, using 5w-30 Pennzoil. Did this myself to be sure I have the correct amount of oil as recommended by Ca Westy (4.5 quarts)
2. There is NO engine oil leak. I check every day, no oil on the garage floor.
3. Replaced the oil pressure sensor. I have to say, the old one looked fine – clean and new looking, not oily or covered in grease/mud/dirt. Learned a bit about the alternator as well! But, no noticeable difference – the light still comes on as described below.

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Symptoms:

The engine starts as expected – the oil pressure light comes on for a few seconds, then goes off. While the engine is relatively cold, the light stays off. But if it is warmed up to normal operating temp, and I then stop for a few minutes, the light tends to start blinking once the engine is started and I drive again. It then stays on, does not go off.

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CEL is NOT going off.

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From what I can observe, the vehicle does not show any other obvious signs of distress. The engine temp stays in the normal range, no weird mechanical noises, engine seems to be running “fine”, no loss of power, or any other signs of an engine about to fail.

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Next steps? Oil pump check and/or replace? Reasonable? job for hobbiests or for professionals only??

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Thanks guys!

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Terry

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