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Bad ecm?

 
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Old 03-06-2014, 02:48 PM
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Bad ecm?

So, I bought this prelude last week and have had it in the shop since. It would idle surge and die, sometimes sound like it's choking and die when coming to a stop or shifting from reverse to drive.

The shop checked everything normal so far, throttle control, idle control, and hopefully some torque thing in the transmission. I talked to him a few minutes ago and he says the idle control, or iac or something isn't getting the proper voltage. I think he said 3 when it should be 12. He says this could mean a bad ecm. Has anyone experienced this, or know anything about it? If I have to replace it about how much am I looking at spending?

Thanks for any info!
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Old 03-06-2014, 04:49 PM
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Re: Bad ecm?

*Ecu?
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Old 03-06-2014, 05:03 PM
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Re: Bad ecm?

year prelude?? what engine??
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Old 03-06-2014, 05:07 PM
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Re: Bad ecm?

were they refering to IACV or FICV??

this should help. yes there is a difference

the FINAL idle problem thread!!!!!
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Old 03-07-2014, 11:21 AM
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Re: Bad ecm?

Sorry for the late reply! I believe he was talking about the IACV.

I have a H22A4 automatic.
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