1992 Marelli - Flywheel Sensor - Fuel ECU Engine Speed

[sbobev (Steve)]

@JimD_in_Alabama

IIRC Steve, the FF77 (and 67) codes only came with the change from 26CU to 36CU and the 6.0 liter engine?

That’s right. Apologies. I myself posted the codes the 26CU flags just a few days ago and FF77 isn’t one of them… :-((

1992 5.3 Marelli - Stall after warming up and odor

The PDF I attached in my earlier post is generated from ALLDATA (the terminology there is different - PCM vs ECU), the codes are the same though. The one you posted is a copy from the Jaguar manual but very hard to read (low res) [13%20PM]