[Gmecm] tuning help

[Rob Weinstock]

Some cars (e.g., Mazda RX-7) won't go into closed loop unless the 
transmission is in top gear. If the transmission switch is faulty, the ECU 
never enters closed loop mode.

Regards,

Rob

>well, usually the number one culplrit of a car not going into closed loop 
>is the O2 sensors not heating up to a high enough tempertaure to opperate.. 
>how do you have them mounted? is the exhaust stock or aftermarket? if it is 
>aftermarket, and the sensors aren't heating up hot enough, then you may 
>have to purchase heated O2 sensors that have a self-heating element in 
>them.
>   ----- Original Message -----
>   From: Sixpakmak15 at aol.com
>   To: gmecm at diy-efi.org
>   Sent: Sunday, March 13, 2005 1:12 PM
>   Subject: [Gmecm] tuning help
>
>
>   Hey everyone... I just started up my car for the first time since I 
>rebuilt it... I'm a newby at tuning, and for some reason I can't get the 
>car to go into closed loop.. It definately seems rich at idle, and I'm 
>running single wire O2's... any suggestions on what to try? I've got a 93 
>Trans Am, using TunerCat... Thanks
>
>   Mike
>
>
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