I just posted the same thread In Evo general. Sorry for the double post. Mod's feel free to combine where you see fit.

Driving home today my oil pressure guage pegged and stayed. It did this while on part throttle 5th gear 65 mph. Deceleration psi is normal, idle is normal, 1st through third and most of fourth for the most part normal (fluctuating 80, 65,100 psi)

Under load it's pegged ??? Temp here was about 76*. Oil changed in last 500 miles M1 10/30. Oil level is Dead Niz in the top notch on the dipstick. Dipstick did not pop out, and no leaks. Megan Racing Guages. No oil light. (yet, KOW)

Searched all threads keyword Oil Pressure.

My thoughts: Backed up behind the oil-cooler check valve, Bad Guage, Bad ground on the guage???

No previous Problems with the guage. No rough driving.

Please Help.