2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

How to tell if ECU is fried?

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Old Dec 13, 2006 | 05:56 PM
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How to tell if ECU is fried?

I need some help from the forum guru's here. I am so close to getting my turbo2 running. I bought the car with a blown motor. tossed a jdm one in. After changing out a bad fuel pump, i have good compression, good fuel pressure at the start position, and spark. from what i can tell, the last problem is getting the injectors to fire. i pulled the plugs, and cranked over the motor a few times, but i can not detect any fuel in the rotor housing. I know the injectors are good. I had them cleaned and inspected by rc engineering. Could the ECU be fried? is this a syptom of an old crusty harness? or am i overlooking another problem? thanks
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Old Dec 13, 2006 | 08:47 PM
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hi, when I had my turbo 2 I went through several ecu's. When I had a bad one, the car would crank and act like it was gonna start but no dice.. wouldn't be a bad idea to get a good one and try it out.. they don't go for much around here..
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Old Dec 13, 2006 | 09:17 PM
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an easy way would be to install the diagnostic LEDS
http://www.fc3spro.com/TECH/HOWTO/ER...KI/zerror.html
or http://www.fc3spro.com/TECH/HOWTO/ER...KI/kerror.html

once you have that down, turn the key to the ON position. Both LEDs should light up for few seconds if the ECU is working correctly.
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