at idle many things are changing, (sure misfire) but alternator load, battery charging or not, accessories on or off. and more lots more, even engine heat.
and worse a MAF that changes output when shook, see many bad maf do that. (even gentle hits to its side)
more tricks ? is to look at OBD2 pendings.
see if 335 shows there,
many errors on this car , do not set until serious and only show up in PENDINGS,
a pending can set and clear over and over and not set a DTC. so we look there, to see if the 335 is really hiding in the fog there.
on most cars (and 4wd for sure) the OBD likes to hide random errors on the 2 sensors, ckp/cmp
this is to avoid (i think) false errors like when offroad doing wild things, causing wild crank shaft actions like when tires slip and then gains traction in 1 second flat. (violent load changes)
this can cause false errors. (and P300 errors too can be less sensitive on 4wd ECU)
knowing this we check pending errors like a hawk.
one other obd2 trick is freeze frame, go there see the frame for 335 errors, see what is there for RPM and other data there to get a clue as to what car was doing at 335, (idling, or driving , or?)
and worse a MAF that changes output when shook, see many bad maf do that. (even gentle hits to its side)
more tricks ? is to look at OBD2 pendings.
see if 335 shows there,
many errors on this car , do not set until serious and only show up in PENDINGS,
a pending can set and clear over and over and not set a DTC. so we look there, to see if the 335 is really hiding in the fog there.
on most cars (and 4wd for sure) the OBD likes to hide random errors on the 2 sensors, ckp/cmp
this is to avoid (i think) false errors like when offroad doing wild things, causing wild crank shaft actions like when tires slip and then gains traction in 1 second flat. (violent load changes)
this can cause false errors. (and P300 errors too can be less sensitive on 4wd ECU)
knowing this we check pending errors like a hawk.
one other obd2 trick is freeze frame, go there see the frame for 335 errors, see what is there for RPM and other data there to get a clue as to what car was doing at 335, (idling, or driving , or?)
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