Check engine light on on my 1990 honda accord need to locate problem and fix to get smog

In the fuse box under the hood or in a box behind glove box.

I suspect some check for the O2 sensor, you are either running to rich and the message is actual problem or the sensor is faulty. I would check it @ auto zone for free.

Check engine light must come on with all other lights. It's called a bulb check. So either the bulb has burned out or the previous owner disconnected it.

All check engine lights will light up on the dash but the turn signal light, speedomiter, ect. It will light up when there is an issue.

it basicly means you have got an air leak on your inlet manifold or one of the pipes or hoeses going to the inlet manifold or even the manifold gasket.
if you start the car up end listen under the bonnet you may be able to hear and locate the leak

if this helps let me know

cheers
mike

Hello ririshrusso: My name is Roger and I will help you. The fuel pump on your car is located inside of the fuel tank. You must drop the fuel tank to gain access to the pump. Should you need further help please just ask. Please rate the answer. This way I know it was helpful. Thank You for using Fix Ya. Roger

The 1990-1993 accord timing marks are located in the space between the engine and transmission. There is a rectangular rubber plug, at the top, front of the transmission housing, that pulls out and the timing marks are visible(with a timing light) through that access hole.

You would only need a CARB # if you had any aftermarket emission, or air intake system replaced on your vehicle. If you do have an aftermarket air intake or any other emission parts installed, remove them and return the engine to only all original stock parts, and you will not have a problem with needing a CARB #.

If you want to keep the aftermarket parts, you will have to see The California Air Resource Board and let them give you a certification number.

I hope that this information was in any way helpful to you.

prob speed sensor can scan for free oriely auto let me know vote for me ok

DOES THE SYSTEM GO THROUGH QUICK TEST? I ASK BECAUSE IT IS VERY UNLIKELY THE CEL IS BURNED OUT, NEVER SAW IT EVEN OCE IN 20 YEARS OF DOING SMOGS AND FIXING ITEMS LIKE THE CEL INOP, WAS ALWAYS ANOTHER REASON. THE CHECK ENGINE LIGTH (CEL) IS IN THE INSTRUMENT CLUSTER, IT MUST BE REMOVED TO GET ACCESS TO THE BULB TO EITHER REPLACE IT OR FIGURE OUT WHY IT DOESN'T WORK.