Hey All~

So,... have a 24ft, '86 e350 Coachman with a wrecked carburated 460.
Picked up a donor 22ft, '90 e350, with a fuel injected 460 set up.
Currently, we have both engines extracted. We are questioning all the wiring now, since the donor engine has all the electronic components going on, that pertain to the fuel injection, as well, it has a catalytic convertor. Our old rig was not equipped with one.
Do we have to do anything to the ' 90 PCM, or can we just install it, along with the engine and trans, into our rig?
Wonder if anyone might have some wiring diagrams, for these 2 years, or just any know-how, at all, in how to proceed with this swap..?
Any and all insight, would be MuCH appreciated!

Thank you, in advance.

 

Which of these two vehicles be kept and hopefully returned to road service?

I have absolutely no knowledge or experience with those two years but I would think if the long blocks are compatible or interchange with one another maintaining the fuel system, PCM and wiring harness would be included in the engine swap.

You can check eBay for EVTM's or extensive service manuals on DVD's or CD-ROM's if that would be helpful to your transplant success.

Not being snarky but what's the benefit or advantage of this swap you're contemplating? How much money will be necessary to complete it all, what will the resulting vehicle be worth in terms of value or utility?

 

It will all work
You need everything off the 1990 (wiring, PCM and all the sensors) EGR with its EVP sensor, the works
It will run like puke without the EVP potentiometer moving (if the computer does not see that you get a form of limp mode)
You need the O2 sensor for sure and the Cat possibly if you register it in an emissions county
A 1986 MH needs to pass 3.0 on CO and 300 HC in most counties
Yours will blow 0.06 and 80 HC if you do this right (saving us all) Good job
Good luck

 

The EFI system in a '90 truck is very much stand alone so you're lucky in that regard. Do you know what trans it is paired with? If it's the E4OD you want that too and not just because it gives you an OD ratio, the computer will throw a fit if can't see the trans sensors and actuators. The EFI system doesn't need a cat to function but it may be easier to just use the vans Y pipe/cat combo anyway.

 

Hey!
Thanks, so much!

In answer to questions,...

Personally, I would rather have older vehicles. The newest car I own, is a 2004, and I have owned my truck for 17 years. I, also, get somewhat attached, being a creature of habit. I know my vehicles, ... all the quirks and such.
Other than that, I can t say I am missing having any monthly payments, and the insurance coverage that comes with them. Especially now.
So, though there may not be much value to any of my vehicles, in the general consensus, they are all valuable, to me, even if not perfect, or full of bells and whistles. My Dad has always said,
" Chrome don t get ya home."
...and, so far, that s been true.
And, no snark taken . It is not a line of questioning I ve not gotten fairly often.

As far as the swap info,...
We have not been very successful, in searching for any manual, or helpful information about this motorhome. Maybe it s more difficult to obtain due it s age..?

We are not separating the trans. Even though our '86 trans is great, my thinking was, that we d do best, keeping the '90 with the trans it has already. So, good to know, I was on the right track there. Thank you.
We are going to transplant the exhaust, as well, just to keep it all together, and hopefully simplify.

We are hoping to have the engine and trans installed, by the end of the weekend.

Thanks, so much, for the info!

 

Information relating to the engine, cab and chassis of whatever your motor home is mounted onto is readily available even at its age. Where or how much information you can find about the "house" portion will require you visiting forums or other sites that deal with RV's etc. Ford didn't build any part of this so information here on FTE will either be sparse or non-existent.

If your motor home has the familar E-Seires front body/frame search for information relative to that year and chassis as originally manufactured. If its been built from just a chassis then it would be an F-53 unit that shares a great deal with the usual E-Series so the manuals for its year of manufacture should be applicable.

Ford didn't customize or build special chassis for each motor home manufacturer---Coachman etc etc built their products around available frame and drive trains for their own benefit.

 

JWA,

The info, you just gave me, is incredibly helpful!
Thank You!

Though, not the first Ford to be part of my 'fleet', it is the first, since becoming interested in turning wrenches on any.
So, that info unlocks resources, that I was just not sure about.
This site is proving to be sweet though!

I appreciate all the help, so far!

Thanks, to All