In reply to a message from T Boy sent Fri 30 Aug 2013:
Thanks for the suggestion. If I haven’t mentioned it before,
it is entirely my fault. Too many things to list.
However, I DID clean both sensors last year, when I did a lot
of work in the fee. A few months ago, I actually replaced the
flywheel (first) and then the crankshaft position sensor.
Nothing in the running order changed.
I will say though, that on the 6.0L car, the ECU flags a code
if the engine speed signal is not optimal (FF77). Not sure if
the older cars with Marelli ignition do that.
The original message included these comments:
connector, pull all plugs, check coils etc. I had a similar problem
a few yrs back and posted on it.To make a short story of it .I went
by a buddies shop who has a lift and put it in the air …sure
enough the front crank sensor had oil on it as I and most older
jags as yours probably has a small oil leak around the crankshaft
damper pulley oil seal.This leak drips directly onto the front TDC
or crank shaft sensor. This sensor takes the A bank info and
decodes it by sotware to determine the B bank position and the oil
keeps it from getting a good reading from the 3 toothed rink on the
crankshat.I checked the rear fly wheel sensor also but its
proteceted by a fly wheel dust shield and was clean. I sprayed the
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