Ron New Member
 

When posting any thread concerning the need for help pertaining to any diagnostic help, there are minimum guidelines for us to help you.


1st). I just bought a 87 RX-7 w 1.3 non turbo . Has Bridgeport intake

2nd).Yup Bought a Haynes manual. Very terse.

3rd). Car was in pieces when I bought it. Fuel pump resistor was cut out of wiring. Got all wires connected except a couple running out of Passenger side firewall. no idea where the Oxygen sensor connects.

4th). !st problem I had was bad wire inside gas tank. fuel pump is good.

5th). When I first put the engine together and primed it w gas. i got a rev so ignition did work. Did not see the primary injectors on first round so in the course of plugging them in i bumped the intake against the alternator . got sparks. Think I blew the ECU . Ordered another one.

No blown fuses or burnt wires so must have found unprotected path back to ECU. Waiting for another one right now.

Why do you think the ecu is blown?

Ron New member
 

My son and I checked and there is no ignition when before I removed the intake there was ignition. Checked the self check got nothing at all.

air flow meter

Air Flow meter. I don't understand how a bad air flow meter could produce zero spark?????

Replaced the ECU. Now it runs. Did not know the ECU was that easy to blow. Burned via the TPS wires.