87 toyota van check engine light
I recently purchased a van which I love to drive and it gets great mileage.
I have been driving around town for about 3 weeks stop and go, with no long driving at one speed. Last week I was traveling at about 40 mph for about 3 miles in fourth gear.
The engine light came on. I speeded up and changed gears it went off.
Yesterday driving up a really big hill on a freeway in Portland Oregon (going out the Sunset highway near the zoo if anyone is familiar with the Sunset) 3/4 of the way the check engine light came on and stayed on for longer . The van which never overheats, the gauge always shows just a little out of the cold,
moved up a little but never near the hot zone while climbing the hill. After making the hill it went down to Cold again. The light did not come on again as most of the drive is level.
What should i check for. Thank you for any help.
Margaret at Emailbyrne@aol.com