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Oil Pressure Gauge Max'd Out


miller_350

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Hi,

 

My oil pressure gauge was working correctly until my service... I bought 5W40 instead of 5W30 not sure if that would have caused this or if it's sensor/wiring issue.

 

When I turn the key to position 1 (i.e. engine not on) it goes all the way up to max.

 

Should I change the oil back to 5W30?

 

Cheers

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I doubt very much changing to 5w-40 caused this. I ran 5w-40 in my 350z and now my Nismo for the last 6-7years without any issue. 

 

First step, check oil level. If OK then I strongly suspect that its either the guage itself or the oil pressure sensor which is a common failure on these cars. My buddies 350z did exactly this, would go straight to 120psi and stay there. We got a replacement sensor located on the bottom of the pil pan next to the oil filter and swapped it out. Easy job, just be very careful when you tighten it back up. Steel sensor and aluminium block, you over tighten it you will crack your lower block and that's a bad day. 

 

My rule was finger tight, 1/4 turn on the ratchet and job was a gooden 

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