Question about Porsche 944
First of all, you need to connect a mechanical gauge to see if you really have a problem. Remove the oil pressure sensor and connect a mechanical style pick-up tube here to confirm. If you still don't have pressure, there are two possible common causes. The first possibility could be a loose crankshaft bolt. The bolt that holds the
crankshaft pulley to the crank, actually squeezes the inner rotor of the oil pump and if it gets loose, the oil pump rotor will not turn. Sometimes this bolt is not tightened properly after a timing belt job has been done and you lose oil pressure. The next thing would be a faulty oil pressure relief valve. I'm pretty sure there is an updated unit for this year, very expensive.
Hope this helps,
Posted on Jul 04, 2010
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Posted on Jan 02, 2017
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