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check the engine's ECU. you have a bad FI control output, and there may be a spare I/O port in the ECU (unused port that the FI control can be re-directed to) if you do not want to mess with a delicate electronic port re-assignment, get where you can swap the ECU out with a known-good one, and see if the problem clears up before shelling out $440 for a new one.

before you spend alot of money on an ECU you should check your wiring , using a noid light to verify signal ,and check integrity of wiring .possible broken, chaffed or pinched wiring.

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โˆ™ 2015-07-15 21:05:35
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Q: 350 Chevy one injector wont work changed injectors left one does not work turn wiring around and still only one works What is wrong?
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