Missing or Hesitating after a bad winter and lots of 4X4
I have a 92 4Runner 4cyl with 320,000 km on it! I have put approx $5000 into it now so can relate to many problems. But this latest has everyone baffled. I have been to 3mechanics and now am resorting to this forum before I take it to the dealership! $$$$$ It is missing or hesitating and losing power up slight hills sometimes and sometimes not...lol.. Also it kind of freezes in 2nd gear at 43 k then rpm goes to 3000, but speed doesn't pick up? .I was getting surges periodically but now none. This has been going on for 3weeks now. It is not a hole in the intake hose, nor pick up, regulater hose, vacuum hose,igniter, injectors, fuel pump, filter, wires, has been diagnosed for torque sensor, etc. Just had Coolant Temp Sensor replaced. Noone has been able to fix nor figure problem out? Any ideas that I haven't heard of would be appreciated. I'm ready to sell and get new one! Thanks
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It will depend on how well you maintain it, and how hard you drive it.
I put over 350,000 km on over 14 years. Oil changes every 5000 km. Finally had a head gasket fail. When I replace it I'll probably get a lot more before something else fails.
If you pull heavy loads or try to go faster than the gearing is designed to accommodate, you'll over rev the engine, float the valves, and something will fail. Guaranteed.
Love your engine and it will reward you.
Treat it bad, and it will let you know.
All the best.
The service duration is affected by many things.. If you are driving in a dusty atmosphere or doing a lot of high RPM but low gear driving, change the oil every 2500kms. if you do mainly highway driving with low rpm but top gear, change the oil every 5000 kms. As a rule, I always replace the oil filter at every oil change even though toyota says you dont have to.
Jack up the front end and put stands under it and block rear wheels. Look at axle boots and see if they are cracked. Try turning wheel back and forth sharply and see if you can hear any clicking. Problem could be outer axle joints. If the boots are cracked or you hear a clicking noise you will have to replace the axle. The axle and boot come as a complete unit. Please let me know what you find out.
The owner's manual calls for changing oil and filter every 7500 miles in normal service, or if driving in dusty conditions, offroad, or lots of low speed and idling (a taxi or maybe an unlucky commuter), go to the extreme service intervals of 5000 miles. Changing oil every 3000 miles is definitely NOT required.