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grid heater and oil pressure

1671 Views 33 Replies 6 Participants Last post by  NCC74656, 
NCC74656
is 81psi at cold idle to high? my truck starts there and falls to 38psi at idle when warm.

its gotten a bit chilly here and ive started to notice it a bit harder to crank and more white smoke. my "wait to start" light has not come on yet. what type of diagnostic can i do to test this with out needing to make the engine colder?

thanks.
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me78569
at 30 your wts should stay on for at least a few seconds.


Any codes?
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me78569
no the ecm tells the grids to cycle,


pretty sure the grid heater relays will throw a code if they dont open.

Typically if you don't have a WTS then your ecm is dying.
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me78569
wts not working is the first thing that typically happens, then shortly after you can be left on the side of the road.

Consider it the p0216 of the ecm

you will typically get codes also.
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