Yup! UN-fortunately now that you have gone this far, your ONLY alternative is to transfer over a 91 computer with harness.
The problem, the 92-94 models had various changes done to them due to emissions control. With-OUT a cam sensor your car goes into LIMP mode thus causing stalling etc. With-out the sensor it WILL run but NOT well.
I ran into this EXACT same problem. I had a 91 with GOOD engine and blown tranny. I also had a 93 with BAD engine but good tranny. I managed to extract the 91 engine and was ready to install into my 93 when I read on-line regarding the cam sensor issue. So I didn't get quite as far as you did. I managed to find a decent 93 block from a wrecking yard so the cam sensor wasn't an issue. But I did end up wasting alot of time extracting the 91 engine for nothing!
I have read that some guys even went as far as drilling a hole in the block right beside the distributor thinking they could fit a cam-sensor in a 91 block. I don't suggest this as the metal shavings from your drill only has one place to go, in your engine! Furthermore, even if you get a perfect hole to fit the sensor in a 91 block, there was NO lobes on the end of the 91 cams so the point is moot.
So at this stage you have 2 options.
#1 - pull the engine (again) and put in a proper engine from 92-94 (probably NOT what you had in mind)
#2 - hunt down a 91 computer with harness and make the transfer.
Not that this will make you feel any better, but if you were to place a 92-94 engine in a 91-earlier model its just a direct drop in with NO sensor issue!
All this fuss over 1 stupid sensor. Gotta love ford.
Best of luck my friend
Wednesday, September 17th, 2008 AT 1:50 AM