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2G Fried second ECU. No Start

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OsoTh3Rio

Probationary Member
2
2
Jan 24, 2026
Walla Walla, Washington
Burning driver chip inside ECU. Didn’t crank second ECU but still started smoking when key in run position.
Not getting power to fuel pump before second ECU went in.

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You sure did. I don't know why you would think that cranking makes a difference, the ECU powers everything up when you turn on the ignition and it only takes a fraction of a second to pop those drivers when they are shorted.

I think you'll find that the coils in the ISC are shorted but you want to make sure that all the other solenoids are plugged in and water can't get into the connectors.

The guys at ECMTuning can likely replace those and I assume your other ECU also needs them.
 
Burning driver chip inside ECU. Didn’t crank second ECU but still started smoking when key in run position.
Not getting power to fuel pump before second ECU went in.

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Please refer to the link below.
 
Will be sending both ECUs in to ECMTuning and looking over the ISC and double checking my wire harness. Hopefully get her back on the road before spring hits.
 
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