Rebuilt cyl head after piston 1 exhaust valve chip/55psi compression. New timing chain kit inc oil pump chain tensioners etc.
Revs go down to 500rpm then ECU panics revs back up to 1000-2000rpm. Does it even at 50-70degrees. Car runs fine on motorway.
Richness regulation STUCK in status 5Z Will NOT disappear...skips to status 4 when revs drop to 500rpm briefly.
LIVE DATA; Brake PEDAL &SWITCH showing pressed when NOT actually pressed.
Tested 2x brake switches both do same thing. Pin 1+2 O/L pressed or depressed. Pin 3+4= 0.07ohms pressed or depressed.
Starter relay. Continuity from pin8…
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