How do i get to the freeze plugs on a 1992 toyota previa

Possibly, but you could also suspect the computer-controlled idle valve or motor, the throttle position sensor, or a weak fuel pump.

It might help you to check for any trouble codes in the computer. The check engine light is used to flash out 2 digit trouble codes; here's how to do so, with a list and description of codes:
http://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995.

Ok then.

Yes, there is an 28mm plug on top, and yes, it can be removed and replaced w/o removing the engine.

DISTRIBUTOR IS THE CRANKSHAFT SENSOR.

pcook90,

Feeze plugs are located on both sides of the block. V6's should have 2-3 on each side, and a V8 should have 3-4 on each side. A four-cylinder should have two or three on each side as well.

Let me know if you need any further assistance.

carsandcomps,

Guru, Premium Expert @Fixya.com

try the oxygen sensors and spark plugs, plug wires, and distribution box. IT NEEDS A FREAKIN TUNE UP!!

AutoZone has manual available on line here.

freeze plugs are hard to get to. coolant is cheaper , keep adding coolant, keep some with y ou in the car.

what u mean by fix are u talking repair it or are u wanting replacement

Please crank the engine again, and then remove all 4 spark plugs. Examine them & repost exactly what you see on the plugs.