Topic: Oil Pressure Gauge Fluctuates
in Forum: C4 Engines
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
My analog oil pressure dash gauge fluctuates slightly between graduations on the scale of the gauge at highway speed (between the 12 o'clock mark and the 1 PM mark indications) after the oil temperature is about 215 degrees. Prior to that the oil pressure needle is steady and reacts to throttle position. All other gauge readings are normal, i.e. RPM, coolant temp, transmission oil temp. engine sounds normal, not that they have any relation to the oil pressure. Should I be concerned with the oil pressure fluctuation or just write it off as a typical analog gauge? Would you recommend I slave in a direct reading gauge? If so where can I tap off the engine (LT1)? My vette, 1995 coupe LT1. Thanks for any ideas and or suggestions from my veteran Corvette owners... I dislike analog gauges!
SPONSOR AD:: (Our Sponsors help support C4VR)
‘92 LT1. Most probably the problem is the Oil Pressure sending unit. The analog gauges on these cars are fairly long lived although they are crappy and do not read linear. The sender (on mine) is located on the top rear of the engine at the intake manifold, just below the EGR diaphragm. Big black round thingy. On L98's it’s typically near the oil filter. For a few bucks I would change that. Easy job. Screw out, screw in. A mechanical gauge where the oil is fed directly to the gauge is the most accurate. That's why professionals use them. I, and they also prefer analog because you can see linear progression. Digital, you just see a number change. Mechanical analog gauges are bullet proof, acurate, trouble free, and last forever.
Electronical digital. Not even close. Ask anyone here (me included) who had there center digital displays go bad. And yours will too eventually.
MTCW. Good luck.
in Forum: C4 Engines
SPONSOR AD: (Our Sponsors help support C4VR)