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Rough idle after ecm and injectors replaced

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Rough idle after ecm and injectors replaced

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Old 01-17-2019, 11:56 PM
flores.2625
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Default Rough idle after ecm and injectors replaced

Hello guys! Iím in need of some help!! I just replaced my ECM which was burnt out due to a bad injector. I replaced all of the injectors and I got an ECM with the same part number and got it programmed. Now it lags to turn on and has REALLY tough idle. I tried the relearn process, but itís still idling really bad. And the codes p0172/p0175 show up. And the mechanic is saying it could be the oxygen sensor. Or just that the new throttle body is defective. Thank you in advance!!!
 
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Old 01-19-2019, 05:16 PM
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You are running too rich. Check and see if the engine coolant temp sensor is plugged in.

It's *possible* it's a bad sensor, but, you are getting codes for both banks. The likelihood of both sensors going bad at the same time is pretty much zero. You have something else going on, injectors stuck open, wrong size injectors, or something else along those lines.
 

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