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Ok, an interesting concern that is plauging me and one the more experiance ford mechanics could probabily answer. I have a 1994 ford f-250 4wheel drive,superduty,7.3l diesel e40d tranmission. and it is the e40d I am having problems with. the transmission is freshly remaned because it blew up. but the truck has had a problem where is will not shift automaticly you have to manually shift from 1 to 2 to 3 the overdrive will not work the tach has quit working. this is a problem that plauged the truck since before the reman trans. the trans controler/tach fuse was blown and replaced and did not blow again. I'm getting ready to start getting the wireing harness out of the looms to visual inspect because my snap-on 2500 scan tool will not talk to the trans ecu. it's been about 6 years since i worked at a ford dealer so if anyone can help with idea about the more common problems on these e40ds in this model year I'd appreicate it.

2006-09-20 19:45:52 · 6 answers · asked by JOHN M 1 in Cars & Transportation Car Makes Ford

6 answers

My dear friend you are trying to do the same thing twice to the same transmission and there are certain procedures to fixing your transmission problems,given that the tach does not work,it should have given you a clue to resetting the tps sensor with the help of an ohm meter to the correct impedance reference so that you can aquire the automatic shift into overdrive ,without setting the tps ,your trans may never shift ,the factory repair manual has the information that you need or your local dealer to reset the tps sensor,I hope that I was helpful,delmy d

2006-09-21 02:58:53 · answer #1 · answered by delmy d 3 · 1 0

Unless it has an old C4/C6 (it doesn't) there are no vacuum lines on the transmission. It also has an electronic controlled transmission, so there is basically no physical "adjustment" that can be made (without a TCM or PCM re-program), because everything is electronic. I do think you should "adjust" the frequency of your transmission fluid changes though. 40,000 miles is a little too much for Mercon-III fluid, you should be changing the trans fluid and filter every 30k miles, unless you are using the new style Mercon-V fluid (which is about 4-6$ a quart) that you still would change every 60k. It sounds to me like you have a stuck valve or piston in the valve-body, which is usually caused by the fluid overheating and starting to sludge/varnish, due to lack of maintenance and fluid changes. Buy a pint of Sea Foam Trans Tune and dump it in the transmission, drive it for a week or 2 and then have the fluid and filter changed.

2016-03-27 00:03:10 · answer #2 · answered by Anonymous · 0 0

I agree with delmy d's post. This is the last model year of the 7.3L IDI which requires use of a "Super STAR II" tester and a special tool to set the FIPL sensor that only Ford stores will have.

2006-09-21 06:35:15 · answer #3 · answered by Anonymous · 0 0

Try looking at the MLP sensor, see if it was changed and has the new style on it. Also if it is a aspirated diesel then the PCM could be bad, Seen that before on a truck with similar concern

2006-09-21 13:41:52 · answer #4 · answered by Josh S 7 · 0 0

my friends dad has a firebird its a
3-speed autamatic which meens that theres no clutch but its got 3 gears that u hav to switch


is yours a stick?

2006-09-21 01:33:56 · answer #5 · answered by total.hippy 1 · 0 0

get a new trans

2006-09-21 01:17:50 · answer #6 · answered by steve 4 · 0 0

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