Minnesota Focus Owners Club

So i put everything in.
ruined some wires somehow. fixed them.
now she runs horribly.
unless you are accelerating, the cars rpms go up and down when your holding the gas at one point, or cruising. Any ideas? Bad egr?

i also scanned it again.
its throwing codes
p0135, o2 heater 13151
p0141 o2 heater malfunction 13152
p0401 insufficient egr flow detected

Im pretty sure it has to do with that last one, but what would that have to do with?
Bad egr?
Bad egr sensor?
How would i take care of the other codes also?
upstream 02 is new, downstream is used but good i believe.


Please help me out, she shaking is driving me insane.

well i was thinking about it today....

im sure i can rule out the fuel pump and anything involving the fuel.
anything with that would be constant, correct?

any thoughtsw would really help people

I dont have any advice, but if you need more parts let me know.

Check the fuses for the o2 sensor, You may have a blown fuse or just a bad o2 sensor.

As for the EGR it's probably a bad DPFE sensor, There's a couple styles, a firewall mount and a tube mount. It's the little box that the two silicone rubber tubes from the EGR tube go to.

The fuses are good i believe, those are in the engine fusebox correct?
Ill have to check into that all soon.

Got fed up with it today, went and bought a brand new egr pressure sensor which looked nothing like what was in it. No shaking now! Now just the O2 Heater codes.