"Darkness's" V-8 4R70W swap revisited

[Savage Wolf]

I'm making this new thread after doing some work on some of the loose ends
first on the list was checking the '93 mustang gt ECM for codes , needless to say it had a bunch in it, but all were for the EGR, Air injection system and the can purge
for the Air injection system 1&2 (Thermactor (smog pump) System Solenoids) were bypassed by putting 75 ohm 1watt resistors where the valves use to be
Can purge solenoid was bypassed with a 1k ohm 1watt resistor
EGR- this one is alittle harder to bypass the vacuum solenoid that controls the egr I put a 75 ohm 1 watt in place of it, the EGR valve position sensor has 3 wires a 5vt feed, signal return (special ground) and sensor signal this was bypassed using resistors all 1watt,
5vt <> 1k ohm 3.2ohm <> sensor signal <> 75ohm <> signal return
with a DMM grounded to the battery the sensor signal gets 0.5 vts (aprox)
Retesting after adding all these resistors gave me a full systems passed

if you are planning a V8 swap TRY hard to try to KEEP the EGR system, EGR lowers combustion chamber temps and helps gas mileage, on my install though there was no room for the egr valve on the intake though

Now for the other neat thing that I tied up, Tach... no fancy fix here, didnt send it out, no swap at all, turns out that some '93 stock tachs (one I had in a extra inst cluster) have 4 pins, one of these pins turns out to be a ground for using the tach in V8 applications, all i did is cut the 4th (top) pin off, solder a jumper wire from the base of the top pin (marked cly) to the base of the ground pin, then do a fine adjust w/ the pot thats on the top of it (used my timing light that has a tach built in it for a refrence)

pics of the Tach to follow, and a double check of the resistors ratings for the EGR (not 100% sure that I got the order right)

 

[410Fortune]

Excellent info, look forward to confirmation on the EGR.

I retained EGR with the BII style heater plenum (same as gen I ex), 4r70w dipstick, and a 97 5.0L intake (P heads)..

Works fine.
I do want to bypass one of the 97 OBD-II PCM's Caniter vent solenoid with a resistor however to clean things up. Currently the sensor is wired to the PCM and just not hooked up to the EVAC system Works fine.

I went the other route however, I retained the 97 PCM to control the engine and trans, kept the DIS ignition, and everything else EEC_V, OBD-II. This was easier (to me) then putting a distributor in the block, running the Mustang PCM, and using the Bauumenator to control the 4r70w.

 

[Savage Wolf]

I checked my notes that I made when I was putting the EGR position sensor
5vt <> 1k ohm & 3.2ohm <> sensor signal <> 75ohm <> signal return
is correct, remember I'm running '93 harness and computer, works great, koeo gives no codes, no CEL, on koer test show air one and 2 inop (go figure)