1982 ECM Diagnosis
#1
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1982 ECM Diagnosis
I have an 82 and I'm suspecting that the ECM emissions control module is not working. Any diagnostic techniques someone can recommend? If I unplug the ECM it as the same as it does plugged in. Starts fine runs great, shut down then it wont idle or start without holding the gassed peddle. After it cools down it will run fine again.
#2
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Can you clarify this sentence.
Doesn't the early Aisan carburetors use the Hot Idle Compensator on the carburetor? It's a thermostatic valve that aids in hot engine starts.
On my 87 carburetor, the casting is there but Toyota switched to a different method.
The only other thing I can think of for the ECM is the Fuel Cut Solenoid. You could test that.
On my 87 carburetor, the casting is there but Toyota switched to a different method.
The only other thing I can think of for the ECM is the Fuel Cut Solenoid. You could test that.
Last edited by slow-mo; 10-09-2012 at 08:59 PM.
#5
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Well, the only other thing the ECM controls on the carburetor is the Outer Vent Control Valve (OVCV). That is only an emissions function, not a operational function.
On my '87 carburetor truck, sometimes the carb will flood as a result of gas leaking into the manifold and makes it hard to start. When that happens, the OEM owner's manual says to press the gas pedal all the way to the floor and hold it there untill the engine starts.
So I would say at this point is check the Hot Idle Compensator.
The ECM is not used to control or operate the ignition system. It does not regulate the fuel in the carburetor except for the Fuel Cut Solenoid. There are other things it controls, but from your first question, it does not seam to be the cause for what you are asking about.
On my '87 carburetor truck, sometimes the carb will flood as a result of gas leaking into the manifold and makes it hard to start. When that happens, the OEM owner's manual says to press the gas pedal all the way to the floor and hold it there untill the engine starts.
So I would say at this point is check the Hot Idle Compensator.
The ECM is not used to control or operate the ignition system. It does not regulate the fuel in the carburetor except for the Fuel Cut Solenoid. There are other things it controls, but from your first question, it does not seam to be the cause for what you are asking about.
Last edited by slow-mo; 10-11-2012 at 11:58 AM.
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kawazx636
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07-03-2023 03:03 AM
96, aisan, carb, carburetor, compensator, control, ecm, hard, make, outer, pick, start, toyota, troubleshooting, vent