Top 20 1994 Toyota Corolla Questions & Answers

Question edited for a lot more clarity., and toss in some CAPS. Question moved to model category. https://www.google.com/search?q=1994+4afe+ecm+wiring+diagram+pdf https://www.google.com/search?q=1994+4afe+service+manual+pdf https://www.google.com/search?q=auto+electrician+near+me ..

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try a simple fix of putting injector cleaner in the tank to clean the injectors check for any loose body screws and panels

Use a fuel pressure gauge to test pressure at key on, and while running. Compare to spec's for your engine.

Fuel problem by the sound of it the fuel keeps running back to the tank and you have to eind it heap untill the fuel returns to the carby fuel pump or maybe hole or leak in fuel line

Sadly you will find TOYOTA entertainment systems are HIGHLY integrated (complex to adapt). FREE circuit drawings for popular USA market vehicles are available on BBB Industries website BBB Industries Premium Alternators Starters Power Steering Products PRESUMING you are a customer Adapters and technical assistance is available at CRUTCHFIELD Toyota Corolla Audio Radio Speaker Subwoofer Stereo You might want to CONSIDER getting an EXACT fit so you can MERELY plug it in... and get on with driving. (just a thought) Carnac the Magnificent

Check all the wiring from the vehicle speed sensor (VSS) to the ECM, including all connectors. It seems that there may be an intermittent open (or short) causing the ECM to sense the vehicle slowing down/stopping.

Cannot confirm. Need to verify other sensors are functioning properly--map sensor, tps, maf...is the engine light on?

you take the vehicle to an accredited auto electrician and have them check the charge circuit and battery could be the alternator or voltage regulator or problem battery have them check the drive belt condition and tension if the units have been rebuilt by reputable electrical company, they are a cheaper alternative to brand new and should have a 6 months or 12 month warranty with them

replace the serpentine belt and adjust it properly

If you can, air dry the complete engine compartment where you used water to clean it. Possibly a few electrical connectors to the ignition system are wet. If you can disconnect these and air dry them, it may help. If you have not performed any type of maintenance like tune up, good time to do so.

Possible brake light switch

Replace the switch you must have broken it

The AC solenoid isn't working. When you turn on the AC this solenoid on the throttle will kick the idle up a little to keep it from stalling when you let off the pedal.

This vehicle does not use points, it has a solid state magnetic pick up to trigger ignition. Try changing the air filter. A dirty air filter can put the MAF ( mass airflow sensor) out of range.

does your car have the signal light flasher if so find it and replace it also check the fuses maybe both sides are fused separate

BBB Industries should have the TSBs and wiring diagrams for this as well .

absolutely, thought my dads truck was locked in antitheft mode after he disconnected the battery, turned out to be a blown fuse.

Before the ECM turns the fuel pump on it needs to see a starter signal, indicating the engine is cranking and also an rpm signal from the engine and spark confirmation from the igniter circuit.

If you removed the tensioner and didn't lock the cams and crank down then you have to re-time the engine. It sounds like you let the exhaust and intake cams move. Remove the spark plugs, put a ratchet on the crank pulley, slowly rotate engine until the cams line up. Once the cams are lined up remove, the timing belt and bring the crank around to the timing mark. put belt back on and let the tensioner go. put plugs back in...see if it'll start.