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Old 14th August 2009
kenny8076 kenny8076 is offline
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Join Date: May 2008                                                
Location: washington DC
My Saabs: 99 9-5 wagon 2.3 litre
Posts: 22
Default oil pressure sensor

hey i just bought an oil pressure sensor and everything looks right except I'm a little questionable about the yellow wire, now i couldn't see a whole lot of the one currently on my car but the one i just got is about 3 maybe 4 inches. is that right? for some reason when i look down at the one on the car now it looks longer. i could be wrong because i cant really get a good look at it with everything else in the way but just want to make sure before i start working on it tom. ive been reading to take the starter off and its accessible (though still a little hard to work with), if theres any other advice feel free to share.
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Old 15th August 2009
KWR KWR is offline
Active Member
Join Date: Oct 2005                                                
Location: Essex, UK
My Saabs: 9-5 2.3SE 1999 Est
Posts: 77

That sounds about right. The connector for the sensor is cable tied to the solenoid/starter motor in the bay to the rear of the engine.

I found access was easiest from below. There are some pictures here.

To undo the old one some people cut the wire off, I found you could pass it back down a 25mm 12 point socket out of one of the spare points. All those ways damage the wire though.

Inserting the new one needs a finer technique. Some use a 24mm ring spanner, some cut that short as there is little room. I found a 25mm ring was sloppy enough allow it to clear all the obstructions and it is not a high torque job so a poor fit on the nut is not a huge issue.
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