I'm new to this forum and this question is an open one to all who own a 1997-1999 F-150/F-250LD. The EGR Vacuum Reservoir F75Z-9E453-AA has been discontinued since 2005. Does anyone know of an after market supplier for this part.

They are subject to cracking and will cause a P0401 "insufficient exhaust flow" because there is not enough vacuum to open the EGR nor to modulate the EGR for best performance.

 

Call:

https://nospartsltd.com/product/f75z9e453aa/

Start hitting the junkyards.

 

Would it be possible to plastic weld it and reuse? Seems to me it could be repaired.

 

I wish it could be. The plastic has become so brittle iy would crack again in a few cycles of being drawn down and allowed to come back to normal air pressure.

 

Thanks glc. been doing that. NOSPartsLTD was the second place I called. Nada. Have found 11 of them in local (greater Phoenix area) Every one of them had cracks as bad as or worse than mine. Of note Every one of them had other EGR control parts which were obviously new and the obvious cause of the failure was them reservoir. The trucks died too soon a death. Not all was lost, got some new bucket seats out of the search.

 

Do you know what type of plastic the reservoir is? ABS? Polypropylene? If you know, google how to repair and you will find lots of information. Repair may be your only option.

 

Fabricate your own out of some 2" or 3" PVC pipe, end caps, and a barbed fitting. Pretty common alternative repair for E-series vans when their vacuum reservoir fails (it's a real PITA to access).

 

@projectSHO89 Excellent Idea! I have thought of purchasing a 2 cu. ft. air tank which can be bolted to the frame rail and run extension lines to the existing fitting But I don't know the internal fabrication of the existing reservoir. So short of destroying this one to find out, something I really don't want to do yet, the idea is still an option as is your suggestion. Since the space is extremely limited under the fender where this darn thing was tucked away, It would have to be a series of layered PVC pipes interconnected with one another. I am going to keep your suggestion in mind.

 

@Roadie It is a fiberglass impregnated ABS which was vacuum formed in two halves and ultrasonically welded together. I took it to a fiberglass shop locally and they kind of laughed at me when I asked if it could be repaired. He said sure for about $500. and there would be no guarantees of any kind that it would work because the age fo the old part (the ABS having "dried out" and the ability to adhere to the old part of the new material added. He said it would probably last 6 months. At least he was being real about it. I've seen old and new fiberglass delaminate before due to the very reasons he states. The more I think about this the more I'm thinking of simply going with an air tank (or capped PVC pipe) strapped to the frame rail.

 

The reservoir only sees about 13 psi negative pressure so atmospheric pressure is pressing on the outside. I would take a stab at repairing it if it were me. There is a lot of info and videos about repairing plastic. One guy dissolves ABS in Acetone and spreads it onto the ABS cracks. Another guy uses methyl ethyl ketone to bond a layer of ABS on the crack. And there are numerous glues available.

 

Barring replacement, I'd try plastic welding it myself.

 

is this the one located behind the battery tray? If so I have a good one im pretty sure off a 97 f150 4x4 if your interested

 

Finally found one here locally. Looked to be a 'restored' 4x4 that had just been given a massive overhaul. Was hit on the drivers side so the passenger side fender was ok. Opened it all up and the Reservoir looked brand new/never used. Must have been NOS.