How do i check a code on my 93 toyota pickup without a scaner

3 flashes pause then 1 flash. the engine is a 22re. 2.4l 3 flashes pause then 1 flash. the engine is a 22re. 2.4l

Vane Airflow Meter - An earlier MAF sensor. On the air filter hose there will be the VAM sensor. Pull the connector and see if the truck responds better. The code means you have a wiring issue or the sensor needs replace. Piece of cake really.

Under hood, driver side, front engine area, rear of headlight housing, mounted in top of air filter housing is the exact location of this sensor. More less a MAF.

Regards,
Tony Under hood, driver side, front engine area, rear of headlight housing, mounted in top of air filter housing is the exact location of this sensor. More less a MAF. Regards, Tony

the engine cuts out if i unplug the sensor. the engine cuts out if i unplug the sensor.

What was it doing when the CEL went on? Symptoms? What was it doing when the CEL went on? Symptoms?

when u step on the gas the engine spits and spudders. no power. kinda back firers. when u step on the gas the engine spits and spudders. no power. kinda back firers.

If you have a multi-meter I'd like you to do some testing on the connector. Below are two links to where I have uploaded a couple nice diagnostic diagrams. Print them off and let me know what you find out. This could still be the sensor. If your engine was cold it can run rough until it warms up still.

http://i1236.photobucket.com/albums/ff44...


http://i1236.photobucket.com/albums/ff44...

thank you. i will check them out thank you. i will check them out

You welcome, let me know. You welcome, let me know.

Tony, I checked the schematic and I think on this engine the sensor needs to be connected to close the circuit on the pump (circuit opening relay) relay coil--safety feature shuts off fuel pump when no air flow.
Will be interesting to see the test results, as the sensor is apparently sensing air flow but computer is not responding with proper injector pulse width.

Pete, do you have M/T or A/T? Also 2WD or 4WD? Need to know to ID pin numbers for ECM. There are 3 different ECMs for this model. If sensor checks out, you will need to check signal continuity to the ECM.

Jeff Tony, I checked the schematic and I think on this engine the sensor needs to be connected to close the circuit on the pump (circuit opening relay) relay coil--safety feature shuts off fuel pump when no air flow. Will be interesting to see the test results, as the sensor is apparently sensing air flow but computer is not responding with proper injector pulse width. Pete, do you have M/T or A/T? Also 2WD or 4WD? Need to know to ID pin numbers for ECM. There are 3 different ECMs for this model. If sensor checks out, you will need to check signal continuity to the ECM. Jeff

I agree Jeff. I was hoping he would find something wrong with the wiring or sensor before I dropped the possibility of an ECM failure. I agree Jeff. I was hoping he would find something wrong with the wiring or sensor before I dropped the possibility of an ECM failure.