You can't, if your check engine light is on, try disconnecting the negative or ground wire on the battery for 5 minutes, if the light is still on with the car started and running, you will have to get it checked by your favorite mechanic...
A cloud
No
a 93 tercel which most likey has a the stock 3e-e engine doesnt have an egr system.
just bring the car to the trusted mechanic....
.008 under normal operating conditions.
I have found that replacing the PCV valve AND chasing down any exhaust manifold leaks usually does the trick.
You more than likely have a clogged egr port. Remove the EGR valve and clean the ports going to the engine with carb cleaner.
Haynes Auto manual from Auto Zone for about 20 bucks.Toyo joe
It is probably your EGR valve causing the check engine light. I recently bought a used 1997 Toyota Celica and had this exact problem. The new valve cost approximately $85 and fixed the problem right away.
Valve clearance is .008 in at normal operating temperature.
its the hose coming off of the valve cover that's the egr valve
how does the 83 tercel thermostatic vacuum switching valve work