88 ranger 2.9 idles rough

[88ranger91]

Hi all,

The 88 ranger I just picked up is running a little rough. It's throwing codes 10r,41r,13r,77r,74r. I unplugged the o2 sensor and it seemed to idle a lot better.

I've looked for vacuum leaks, exhaust leaks, cleaned out the fuel system, and ran sea foam through the brake vacuum hose to try and clean the injectors. Running a lot better than it did when first bought it but still runs rough.

Any ideas on what to do next to fix the codes? Thanks!!!

 

[88ranger91]

Ok still new to this efi/computer stuff. I figured out the brake code and the "goose" test code but when in the test cycle do I press the brakes and move the throttle?