Need help with Mazda EFI.

[Fred Miranda]

I know the fuel pump won't run unless there is some airflow to open the 
air flow meter door a little. This closes the circuit to the fuel pump relay.
Maybe the ign. is related.

Fred

At 04:42 PM 11/6/96 -0500, you wrote:
>At 01:44 PM 11/6/96 -0500, you wrote:
>>I recently cracked open the ECU on my 1987 (non Turbo) RX-7 to repair a
>>fault in the bypass air control valve circuit, and in the process somehow
>>disabled the ignition system (I think).  I have tested the computer in the
>>car and the readings for ignition look normal, but I am pretty sure that I
>>am getting no spark (and I know that fuel is working because I smelled
>>unburned fuel after the first time I tried to start it (extended cranking).
>>This confuses me a bit since I didn't touch the drive electronics for that,
>>but such is life.
>...
>
>  Funny, when I had an 88 non turbo RX-7, I would get no spark when the air
>cleaner/housing was off.  Cranked for a long time (w/ jumper cables), gave
>up on it and put the cleaner back on, and it started right up.  Couldn't
>find a bypass switch anywhere, but something was going on to prevent the
>machine from going.  Doubt this helps, but it may indicate there are several
>things the ecu checks before allowing the engine to start.  If anything like
>this is the case, I would be interested.
>SMD
>--
>Stephen Dubovsky
>dubovsky at vt.edu
>
>95 Yamaha FZR600
>83 Porsche 911SC
>84 Jeep Cherokee
>
>
>