Throwing a P1401 code

[Rearanger]

I think it is one coil pack,right on the top to the left of the manifold. any idead where the ol FF might be located at?

Well if you mean coil "pack" as one coil with one primary/secondary for all six plugs then that would affect all six plugs. But a "pack" where there are 3 or 6 coils would only affect a couple of plugs. I'd do the fuel filter thing first, that's cheap. Can't say where your filter is but mine is located under the DS door sill. You can trace the fuel lines if someone else doesn't help. Hopefully it's not in the tank.

 

[98RangerXLT]

thanks! I will give it a try this weekend

 

[98RangerXLT]

Well I haven't changed any plugs or filters yet but I have noticed a few new things over the past weeks.

The issue no longer occurs after the truck warms up. It has randomly now. Some times it happens immediately upon driving, sometimes it takes a good little while for it to kick in. And when it does begin I can feel the truck kick alitte and becomes a tad sluggish. And when it starts happening, when I shift into 3rd it grinds a little....


When its not happening, I can shift into 3rd no problems, once it starts it has a slight grind...

I am beginning to wonder if the tranny is messing up.. Its a 5spd.

 

[98RangerXLT]

Update on my issue..


After I changed my fuel filter, teh bucking/hesitation and most valve rattle stopped..

thanks for the help guys

 

[vender]

I just replaced my 3.0 engine and it was getting that code p1401. My old engine ran just like yours before it blew. I hope yours is different. Any chance you are using Bosch plugs? If you are GET THEM OUT!

 

[BWDuty]

P1401 My Fix

I wanted to add my experience, since this code has been hounding me for quite some time. I tried all of the usual fixes first of course.. Replaced the DPFE with one from a junkyard. That didn't work, code came back as soon as I cleared it. Broke down (figuratively, this never actually rendered my truck inoperable. Even when I had the DPFE sensor completely unplugged) and bought a new DPFE sensor, and those things aren't cheap for a 2000 2.5L. I think it set me back over $70. That still didn't fix it. After doing quite a bit more research, I found that the EGR system could get clogged with carbon build-up which has been known to trigger this code. Just to be completely safe, I replaced the EGR valve itself, the EGR tube, and cleaned the ports they connect to really well with carb cleaner. Reset the code, and bam right back on.

I had already visually inspected all of the wires, but since the code itself makes me thing electrical I decided to go a bit further. I very gently tugged on the wires coming out of the harness that plugs into the DPFE sensor. One came out with absolutely no effort, and another came out fairly easily. I suppose this could explain why replacing the DPFE sensor "fixes" the problem temporarily for some people. Handling the harness when unplugging and plugging it in might give the wire just enough contact for a little while.

The parts store wanted over $30 for a new harness, so I went around at a junk yard until I found one in which I could tug all three wires fairly aggressively and they were in there really well. Unplugged the harness, cut off enough wire to splice it to my old wires, and the problem has been fixed ever since for $2. Well, at least I have a whole new EGR system now! I guess that can't be bad for mileage.