When the computer detects a problem it turns on the light. You are supposed to find out what's wrong by using a code scanner. Borrow, rent or buy one. They are available at most auto parts retailers, and they are quite easy to use.
why appear light ( service engine soon), after change oil on a 2001 ford pickup (f150)?
Your mom.
disconnect the battery for a few minutes
spark pluggs
your oxygensensor is bad ,its screwed in to your exhaust manifold, about 30.00
i asked this question the tempture gage shows it is over heating but the engine is cold to touch
you need to have the car's computer scanned to see what codes are making the service engine soon light appear.
Could be a worn out waterpump.
What Cressida engine will fit to a Toyota pickup model19
That is one of many possible causes.
Remove the negative cable from the battery for a few minutes then re-install
There is a problem somewhere in an emissions control system. Get it fixed.