Re: Pulser Coil Failure
well look at the bright side.
you now own a spare pulser coil.
you wont ever need it but you own it.
I tried to warn you
.
on to the issue.
NO its NOT sensor failure.
there are NO sensor failures that stall the engine on the F115.
ANY sensor failure,including a pulser coil failure,will lead to an increased idle speed and top speed may or may not be reached depending on which sensor failed.
when you get the alarm what indicate do you have on the digital tach it should be rigged with?
unless the code is active it wont store it on that ECU.
you will have to have the laptop or the diagnostic test lamp installed WHEN the issue occurs.
NO code set for an overheat on that model.
you can have low oil pressure or a defective switch and trigger the low oil pressure audible and RPM reduction but no stall unless its mechanically seizing.
you can have a temp sensor fail no alarm,temp sensor failure code WILL be set,unless its an inrange failure,increased idle speed wide open can be reached.
use an ifared temp gun on the ISC valve and cycle the valve 5 times back to back,temp should stay under 200 degrees.
I have seen sticking ISC valves draw excessive current through the ECU,overheating the ECU and then things get nutty.
that chatter you hear at engine shutdown is the ISC resetting to a 100%request from the ECU.
if its not present at key off shutdown hunt for why.
NO codes for ISC failure or sticking.
remember,the % opening you see on the laptop may NOT be the actual mechanical position.
