new with aem ecu plug and play - Dodge SRT Forum
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post #1 of 3 (permalink) Old 12-23-2017, 04:47 PM Thread Starter
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Question new with aem ecu plug and play

hello people. im nelson from puerto rico. sorry for my english, its bad. recently I got a used aem plug and play. the person said that one of the injector was not working. i want to know how can i test it or reprogram the ecu. if someone can help I'll be gratefully happy.
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post #2 of 3 (permalink) Old 12-23-2017, 06:07 PM
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They probably meant that one of the injector drivers is not working internal to the ecu. The driver is circuitry that controls different things like injectors and coils. You could try contacting AEM direct to see if they can help or find someone local that does that kind of micro-circuitry repair.
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post #3 of 3 (permalink) Old 12-23-2017, 08:58 PM
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The injector "driver" is a transistor chip that cycles power on and off to the fuel injector. They can often burn out if someone uses an injector with the wrong impedance (electrical resistance to cycling, alternating current-type signals). I can't recall if the AEM requires high or low-z (z = impedance) injectors, but if it needs high impedance fuel injectors that have a high electrical resistance and someone used low-z injectors with low electrical resistance the injector driver's transistor chip would overheat and burn out.

If the computer came with fuel injectors it's also possible one of them is bad. I'd start with that and have them tested and see if they work. If the injectors are good you might see if AEM can service their computer and check if it works before taking the time to install. If they don't offer any repair services you might want to find an electrics technician that can open the case and test if the transistors are good.
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