Well I pulled the TCM and checked it's connector with the key on engine off and it has keep alive power as well as regular power. I found the way to test for codes without a tester and ran the test with a trouble light and got the following:
23 TPS (I didn't move the FIPL lever during test)
26 TOT (truck was not warmed up)
91 Trans sol 1 failure
92 trans sol 2 failure
93 TCC failure
94 TCC failure
This all leads me to suspect the connector to the solenoid pack on the pass. side of the truck. When I first got the truck I had issues and removed and cleaned that connector. It turned out to be a ground connector was not hooked up near the battery. I pulled the connector tonight and noticed minor corrosion so I'll get some cleaner tomorrow and see if that helps. Can buy another connector anywhere? What about the one on the trans itself? Is there a separate harness from the TCM to the trans I could/should replace? Could this be a ground issue once again? I rechecked the connector that originally gave me trouble and it's tight and clean.
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends and WMO/D2 blends. Hummer H1 electric lift pump, Fram PH8A style oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
You may be able to get a new connector at ford, Azone or a trans shop. The Solenoid pack is the trans side of the connector.
Do you know if the solenoid pack can be replaced without tearing down the whole trans? I didn't really look at it when I had the pan off. I'm hoping some contact cleaner will fix the problem as it seems odd that all of the electronics in the trans would fail at the same time.
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends and WMO/D2 blends. Hummer H1 electric lift pump, Fram PH8A style oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
It's been refered to as the "PCM", TCM" "TECA" even the "EEC". I realize it only controls the trans but it has sensors all over the engine. Manual from the library suggests it's under the blower motor, going to check there now. Seems as though Ford went to a lot of trouble to hook this trans up to this old motor. I tend to believe in the KISS method and this is a far cry from it, if they needed OD why not just a 4spd regular auto?
i WANT being a wise azzz-------------i believe i read its by the blower motor, the tcm wasnt hard to make, and Ford needed to do this,,as the other manuf had overdrives, and the idi is what was then. when the pwrs came out--they just put it in with the pcm---------it really is good, as you could acually put a e4od behind the old 6.9 dsls--just by getting the harness,sensors, trans,and tcm out of another truck,if you were so inclined--course all the linkage also--
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94 f250 idi turbo sc e4od alum fac rims 149,289 --dana 60 frt with posi--10.25 rear w/posi--shouldnt get stuck!! ats turbo 3" parts on--what a diff from stock turbo!!!!!--- also 96 F250 with 305,000 is fixed!!-- 7.3 rattler-also 85 6.9-needs new engine!! tired!!
Well it blew up today. Massive fluid leak and I was in traffic and had to drive several blocks to get it off the road. It lost almost all forward movement then completely lost movement when all the fluid leaked out. What a day!
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends and WMO/D2 blends. Hummer H1 electric lift pump, Fram PH8A style oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
On my 89 F350 the pcm is located behind the cover next to parking brake pedal. It has a bolt holding the plug into it under the hood. I am having the same problem with my e4od it starts out in od or 3rd in drive and can shift it to 2nd manually in 1st or 2nd on shifter. Just had it in the shop for diagnostics all electronics checked out and they told me it is something internally in the tranny,they say forward clutches possibly.
On my 89 F350 the pcm is located behind the cover next to parking brake pedal. It has a bolt holding the plug into it under the hood. I am having the same problem with my e4od it starts out in od or 3rd in drive and can shift it to 2nd manually in 1st or 2nd on shifter. Just had it in the shop for diagnostics all electronics checked out and they told me it is something internally in the tranny,they say forward clutches possibly.
I found my PCM, on the vans it's under the blower motor on the pass. side.
Pull your pan and take a look out the solenoid pack. Mine had metal powder on top which shorted it out and burned the circuit board. Ultimate failure on mine was the front seal blew out, probably from the converter getting hot trying to drive in only second and third. The seal actually worked it's way about half out of the front pump. The EPC solenoid is on that pack as well, it's the pressure control solenoid and when it fails the trans builds max pressure from what I can tell. Pump working extra hard, converter working extra hard, all of that causes a lot of heat. I'd pull the codes on my own to confirm since having 2, 3 and R sounds more like no power to the tranny or a burnt solenoid pack than bad forward clutches. I mean how bad can the forward clutches be if your truck will start off in 2 or 3?
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends and WMO/D2 blends. Hummer H1 electric lift pump, Fram PH8A style oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
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