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Hi,Some time ago my Miata suddenly stopped running, this was while driving. Now, after starting it the pulse width drops to 0.
It is a NA miata, with BPZE block and BP-4W head, 4AGE ITBs, running on an MS2.
We have replaced a number of parts;
Petrol pump, Petrol filter, FPR, Injectors, Ignition coil, Spark plugs, Spark plug cables, Relay (FP and Main, and all once (from a working car)), All fuses, Grounds (cleaned and one renewed), Battery.
Tested signal on:
CAS, TPS, IAT
-Tried jumping the FP
-Also doesn't work on stock ECU (with MAF)
Unfortunately after all these attempts still no result. The ECU is being checked at the moment, but I was wondering if anyone here had any other ideas? While we were working we found out that the injector on cylinder 2 randomly remains open.
As soon as the ECU gets the run signal the pulse witdh drops to 0!