View single post by sheltonfilms

Posted: Wed Dec 20th, 2017 12:32 am

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sheltonfilms
Electronicals / Forscan Expert

Joined: Fri Nov 24th, 2017

Location: Hoover, Alabama USA

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Your P0141 and P0136 codes mean you don't have a rear O2 sensor hooked up. Sounds like the didn't put the Cat back on.

you have 3 (maybe 4) o2 sensors. 2 of them are right after the manifold. These are the ones that control how well your truck runs.

Then there should be a cat converter and then the rear o2 sensors. The rear o2 sensors are just there to see how well the cats are doing at removing emissions. Not having rear o2 sensors won't cause poor gas millage or performance, you just won't be able to pass emissions (if your area requires it) and you will have a check engine light on all the time.

____________________
2000 XLT 2.5L A/T 2WD
Mods:
Power Windows/Locks Mirrors using OEM harness and parts
Explorer Sportrac White Face Cluster
Explorer OHC and Auto-dim Mirror
Auto Door Locks
Full HID Projector Retrofit