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Old 07-08-2019, 06:48 AM
Emory39's Avatar
Join Date: Nov 2014
Location: Boise ID
Posts: 604
Emory39 is on a distinguished road
Surprised!...Not really...But really surprised

So long story short... My readiness for emission where not setting, it didn't matter what I did they would not set. I had no codes on the ECM. So I was really scratching my head about this one, everything seen to be working correct. But then I really looked hard and compared my readings to my wife's X3... I know not the Same engine. But I did notice that my O2 sensors were reading a bit slow, also I had a hesitation mid RPM range. So I purshased the sensor on page B for close to 400, page A wanted close to 600, so after I replace them I was driving a hole new X5...or it felt like that.

It felt like all the lost HP and TQ was back no weird hesitation mid range or strange engine pitch. Soo if your X5 seems tired and not torqui I would suggest O2 sensors. Mine where the OE sensors and at 129k they where defenetly tired. LoL
E36 M3 95-sold
E30 318i 91-sold
E39 528i 00-rebuild at136K -sold
E36 M3 98-sold
E53 X5 4.4 05-the beast
E53 X5 3.0 5M/T 01-sold-coming back ETA 22SEPT Its back
R56 Mini Cooper S 07-sold. I should have keept it
E83 X3 3.0-the wife's
E36 M3 97 - The new project - sold
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