While I was doing 65mph down the freeway I noticed my Speedo was bouncing, my check engine light, abs light, parking brake light were on, and 4 messages on dash. Oil level low, change oil, service brake system, and service brake booster. I scanned the codes for the check engine light, and it said massive air flow sensor. I've unhooked the battery to reset the system but as soon and I get going it put the truck back in to limp mode, but with out the check engine light on. Any ideas or thoughts?
My car has 200000 miles.
My car has an automatic transmission.