ecu fuse

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Senior Member
were having a prob in my friends car. he has a 88 crx dx, and he keeps blowing the ecu fuse. it only happens when the ecu is pluged in, is it grounding it out? ecu prob? im ready to take the whole wire harness out and check each wire. help please

edit: also what ecu's will work? 88-91 dx civic's because theres no 2nd gen crx's in the pnp here. can you check a ecu? thanks again