ok...my 96 f250 with 7.5l gas needs to pass smog...i think it might be the egr tube...im getting p0401 and the ones that say its running lean....points mostly to low air flow. a while back i replace drivers side exhaust manifold...i may have tweaked the tube then...so my question is this...and it doesnt count as my stupid question of the day( everybody gets 1 a day ) can i wrap the EGR tube with that exhaust pipe tape stuff...or that black crap and then wrap or is that just gonna mess it up more...help...i got 4 days

 

Did you test the DPFE sensor as I posted here: https://www.ford-trucks.com/forums/1...l#post20378756

The sensor itself could be bad. Only one way to know for sure. Could save you a LOT of extra work and sweat.

 

I put in a new one ...no change....but I did not test either one

 

And now it's throwing a p1401 code

 

But back too my question..can I wrap it with exhaust tape or something just to pass smog

 

There's so much info out there I'm going crazy and don't know wat to do...I'm not great with electrical....I don't have much money at all to fix this can someone please help me and tell me wat I can do ...down to 3 days

 

I feel your pain man. Have you checked all your vacuum hoses, if you have a vacuum leak anywhere the EGR will not function properly and will throw that code it will also cause that lean condition or bad air-fuel mixtures in general. Check ALL the vacuum hoses.

 

i bet a vacuum leak is your problem. check the vacuum hoses and fittings and check the intake manifold bolts

 

Yes you can try wrapping the EGR tube with high temperature wrap if you think the tube or sample tubes are cracked. Did you check or replace the silicone hoses that go from the sample tubes to the DPFE sensor?

 

Ok...let's see...I've taken off rgr and cleaned it...ran I zip tie through the 2 smaller ones..replaced acouple things I'll send pix of...kept 1 or 2 on and switched 1 or 2 back because there was no change....it first started when I replaced exhaust manifold....when I took old one off the fitting from the tube broke off in manifold...I got that fixed but I think I might have cracked the tube some where

 

Ah yes that's likely. You can order a new tube for about 60 bucks and it should get to you in the next couple days or you could tape it up like you are saying but you would likely still have a leak if this is your problem...

 

It's hard to even find one for my truck....everyone that's says it fits my truck is way different from the one that's on there