Can Rough Idle(or misfire) cause a P0401 | Ford Explorer Forums - Serious Explorations

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Can Rough Idle(or misfire) cause a P0401

fbc

Active Member
Joined
December 11, 2010
Messages
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City, State
Guadalajara, jalisco, Mexico
Year, Model & Trim Level
'97 XLT 4WD 4.0 OHV
I've just acquired this vehicle.

I've yet to change the plugs and cables.

I originally have a check engine light, so I cleared them with my code reader as most mechanics in Mexico don't bother to after a service.

I figured if they were real problems they will come back.:)

Sure enough after 24 hours the light came back on. It was a P0401.:(

I read a couple of posts where some said it was vacuum hoses with holes. A bad DPFE(?). The only thing I notice is a rough idle. Otherwise the car works fine.

4.0 OHV :exporange
 






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