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Temperature sensor/EGR valve testing. 900

posted by  jotvolvo on  Tue Apr 24 05:03 CST 2007
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last visit: Mon Oct 12 08:43 CST 2009
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Hi all,
1994 940 turbo. Replaced temperature sensor for gauge. I also removed the other temperature sensor for the ECU to see its condition. The probe is blackish and I am wondering if I can make it shiny like new sensor with some abrasive cleaner. Please advise. Does cleaning of the probe will remove some kind of coating. I noticed on the new sensor it looks it does not have any coating. A while back check engine light came up with a code for EGR valve issue. Is there a way to test this valve.
Thanks
Ram








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Temperature sensor/EGR valve testing. 900

posted by  Paulii on  Mon Apr 30 09:59 CST 2007
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last visit: Fri Jun 6 03:04 CST 2014
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Hello, use a vacuum pump on the nipple of the egr. it should move in and out. Pauli








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Temperature sensor/EGR valve testing. 900

posted by  mila on  Sun Apr 29 20:50 CST 2007
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last visit: Fri Sep 5 06:26 CST 2014
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To test the EGR you can loose the vacuum tube from the connector, on the left strut mount. Apply some suction (mouth or pump) when the engine is idling and it should stall.

HTH,
mila






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