[olopezm]

Originally Posted by Seizer

Did you have the DPFE changed?

Here's my old post that dealt with this issue.
http://www.automotiveforums.com/vbul...d.php?t=408652

If you do a more thorough search on the DPFE you will come across many posts I am sure.

Food for thought also was the whole upper manifold service bulletin, that dealt with CEL coming on always flagging O2 sensors. I know you said your O2 sensor was cooked and you had different fault codes, just thinking it is possible it could be related.
http://www.automotiveforums.com/vbul...d.php?t=935718

Hello and thanks,

no I haven't changed the DPFE I didn't think I should because mine is the black version, not the silver one as mentioned in most of the DPFE related threads, You're right I found lots of DPFE and Ford related problems when fixing a '95 town car, I had to replace the silver version dpfe and everything went back to normal.

About the O2 sensor and the TSB, I'm aware of it too, actually I had problems with the P0171/4 DTC's about a month ago, I was scared when somebody told me about it, but my problem was because of a bad MAF and a bad fuel pump too. However I might give a try to the TSB since my windstar has a diesel like sound specially when it's cold, but that will be another story... I will go to a junkyard to see if they can sell only the connector of the O2 sensor, it's the only thing I need and not the whole sensor.

Any idea if the rough shifting can be because of a vacuum leak? or how can I correct the problem of not being able to use the 1st gear because the lever won't reach there?.

Thanks for your help!.