Quote:
Originally Posted by e9999
back to the basics: the thing is that for this to work, it has to know that there is a reverse load on the engine. Simplest way to know that would be RPM greater than nominal idle with throttle closed...?
interesting, read someplace that some manufacturers did away with the cutoff feature upon introduction of OBDII.... no idea if true...
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I have not read anywhere about a fuel cutoff for the FZJ80,
My 1981 280ZX had a Bosch fuel injection, despite the decade between them it was very similar to the OBD1 setup in the 91-94 80 series. it had fuel cutoff, If RPM was >2500 and the throttle was closed via the TPS no fuel was delivered, with a 5 speed in the mountains you could spend quite a bit of time in this state coming down steep grades,
Quote:
Originally Posted by CivicFerio
I believe on newer emission controlled vehicles, during down hill or coasting, the injectors spray the amount of fuel as if it was idling. This is done to keep the cat at optimum temperature at all times to reduce emissions.
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that makes sense and ties in with E's OBDII statement.