Cant find the oxygen sensor in a 1990 honda accord lx need detailed explanation please

Try using starter spray.

you need back to the timing belt and re_check the marks for the timing belt this are on the camnshaft and cranck shaft put on the EXACT position .I think is all what you need if is not explain with more details tnk.

THERE SHOULD BE TWO. AND THEY ARE IN THE EXHAUST PIPE, THEY LOOK LIKE A SPARK PLUG WITH WIRES COMING OUT THE TOP.

For 1992 Honda Accord 2.2L FI 4cyl the Oxygen Sensor is located:
DX, LX model
Under hood, center, front engine area, mounted in exhaust manifold

EX model
Under hood, center, lower engine area, driver side rear of engine, mounted in exhaust pipe

Hope helps (remember to rate this answer).

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.

hey
The oxygen sensor should be in a black box on the intake pipe in the engine bay, its usually a case of just loosening two screws and removing the connection. hope this helps.
Damien

Check with NAPA. They have a detailed layout of what you can buy to match up to OEM specs.

both are located in the exhaust system. You have to get the car off the ground and follw pipes. You cant miss the O2 sensors.

Try driving for a while, it should go out. Unless fixing the oxygen sensor uncovered a new problem. Maybe the MAF sensor is going bad.

A green flashing "S" is similar to a check engine light. It is telling you that something in or on your transmission is not functioning correctly, such as the speed sensor or shift control solenoids. If it starts flashing and the speedometer stops working or the transmission shifts weird, take it to a mechanic.