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[biggriffin]

Crank Sensor is ‘Lemark’ brand, EGR valve has been change with a working old one so has the throttle sensor.

Mmm. Nice new shiney GM one here.
 https://www.omegaowners.com/forum/index.php?topic=144271.0

This a square plug, early fitment, 2.5/3.0. just look at your plug, oval plugs are either metal body, or plastic body.

[2.5v6]

It was the crank sensor after all this time I had a spare one in the garage whacked it on and she’s firing on all cylinders been running on idle for some time not missed a beat lesson learned I’m getting one from dealers that’s for your help all

[2.5v6]

Now here’s the thing, when I buy one which one do I go for, the one that came out is oval head but Siemens brand, part number 90 492 061, this is the one I’ve put in off the other engine and also had GM stamped on the part

[Doctor Gollum]

Now here’s the thing, when I buy one which one do I go for, the one that came out is oval head but Siemens brand, part number 90 492 061, this is the one I’ve put in off the other engine and also had GM stamped on the part

You buy the one that the dealer matches to the chassis number

Also have a read of this...

http://www.omegaowners.com/forum/index.php?topic=96562.0