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Old 12-09-2010, 09:28 AM
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rkmengineering rkmengineering is offline
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2017 Titan Crew Cab
 
Join Date: Jan 2010
Posts: 135
Default FYI: High oil pressure. Don't assume anything

My oil pressure gauge maxed out so I assumed it was a bad oil pressure sending unit. I attached a mechanical pressure gauge to double check the values and found that it was registering between 80 and 120 psi when cold (10W40 oil used). Thinking that I had a stuck regulator in the oil pump, I attempted to free it up by reving the engine. I was going to pull the pan anyway so I did not mind blowing an "O" ring or two. Well, nothing blew. It turns out that it was a bad sending unit and my mechanical test gauge was also not reading accurately (checked it to another gauge). Most importantly, found out that parts stores wanted $85 for an aftermarket sending unit. The dealer OEM was $26. Remember, "assumptions" is the Mother of all f......ps.

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