Subject	Usually a Check Engine light
Posted by	Noncon on May 07, 2008 at 7:03 PM
	This message has been viewed 150 times.
In Reply To	Symptoms of an inoperative ECU chip??? posted by nismo_boost31 on May 06, 2008 at 10:06 PM
Message	Are you using one of the diagnostic software i.e Conzult? If so what is the A/F Alpha when running lean? If it is high (above 105) it means the ECU sees the lean condition and is trying to adjust for it, so ECU is doing what it is suppose to. Have you checked the O2 sensors? KJ
Follow Ups	Symptoms of an inoperative ECU chip??? - nismo_boost31 22:06:07 05/06/08 I'd call JWT and ask for their opinion. When this started - ThunderZ 06:12:49 05/07/08 Spoked to a JWT Tech - nismo_boost31 13:31:46 05/07/08 Wow...I thought you'd get some help from those guys. - ThunderZ 21:38:29 05/07/08 Replaced all fuel related parts, bypassed AFC, even - nismo_boost31 22:45:42 05/07/08 You have a spare chip if you did the JWT deal. Swap in - ThunderZ 09:13:52 05/10/08 Have you checked fuel pressure? (n/m) - Fast300 12:28:20 05/07/08 Fuel pressure is dead on & fuel system is clean (n/m) - nismo_boost31 13:19:30 05/07/08 Usually a Check Engine light - Noncon 19:03:31 05/07/08 Using techtom for injector speed & MAF voltage - nismo_boost31 22:42:38 05/07/08 Re: Using techtom for injector speed & MAF voltage - Noncon 22:10:09 05/08/08 Maybe the JWT chip is not doubling the MAF signal - nismo_boost31 22:51:36 05/07/08 EPROMS do not just go bad unless you touch them with static - Devi13 03:36:15 05/09/08 I have checked everything - nismo_boost31 09:10:56 05/09/08
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