Where is the oil pressure switch on a 1998 mazda mpv?

It could be a fault of the multifunction switch

Sounds like oil pump is weak. Did you happen to run it low on oil? Regardless, I suspect oil pump is going bad and should be replaced in very near future.

If you drive normally then change your oil/filter every 5,000 miles. If you drive mostly city driving change it every 4,000 miles. If you drive mostly highway then change it every 6,000 miles. If you are using a synthetic oil then add 1,000 miles to each of these intervals. Use the correct weight oil for your 1997 MPV as listed in the owner's manual. Also use a quality filter such as Purolator, Wix, or Bosch. Change your air filter every 30,000 miles unless you drive in dusty conditions and then change it more often.

have you tried unlocking your diffs,you know that button beside your rear defogger button,..on the right.

Has the throttle position switch been changed?

5W30 engine oil. synthetic is best protection

10w30, depending on your climate and mileage.

You can try a junk yard or better yet the dealer for new.

its almost normal.i would switch to a high milage oil at the next oil change.u also might want to change the pcv valve.

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