Right this VR6 OBD1that ive got has no spark/fuel. Was supposed to have the codes read today but for one reason or another the guy doing it couldnt. Anyway put a decent big battery on it with a full charge,been using jump leads to try it previous. Cranked it over to try and could here a relay going erractic when first cranking...5 seconds or so. Turns out its relay 109 which from my searching on here is for the ECU? Are these prone to failing on these cars? Is there any test/bypass/bodge I can do to see if its that stopping it firing up? TIA