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EF auto trans going berserk 


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 Post subject: EF auto trans going berserk
Posted: Mon Mar 31, 2008 12:20 am 
Oompa Loompa

Posts: 22

Joined: 28th Mar 2008

Location: Maroochydore
SA, Australia

It goes like this:
Start up, select reverse, back out driveway - all ok so far.
Select 'drive' and proceed.
1-2 shift normal.
No 2-3 shift until 65 k/p/h is reached (and then sometimes only if I drop right off the go-pedal sharply)
Same M.O for 3-4 shift and so on.
** AND ** :?
The damn thing is likely to suddenly change down a gear, at any point in the shift train - regardless of road speed or engine revs. Seems to be more likely to down-shift after normal eng temp is reached, but all other aspects of the problem are the same at any temp.
Have replaced VS sensor and checked + cleaned all earths and fusible links etc. Also noticed the int lamp globe was missing, and replaced the fuse (it was not blown - just dirty) so replaced same.

..... No change.

I just bought this EF from a newspaper classified. The woman said it was her son's car, and he had changed the auto trans and the ECU, (I'm guessing that HE was experiencing same problem) and now he has gone to prison for something, and told her to sell it. (Hmm...)

Oddest thing is, it drove well for the 120 k/m trip home!

Also seems the car has a BEM problem as I sometimes have to do the old "bash the dash" procedure to get it to even crank.
When it first started the no-start thing it also started the trans behaviour.

Still trying to hook up temporary LEDS to the switched IGN B+ lines into the ECU to see if anything is intermittent there when driving. This has been helpful for me before with this kind of thing, but I haven't done it in a Ford before.

:?: Anyone got any ideas?
Posted: Mon Mar 31, 2008 12:28 am 
Oompa Loompa

Posts: 22

Joined: 28th Mar 2008

Location: Maroochydore
SA, Australia

I posted in the wrong forum.
Not sure if I should re-post in the right one now.

I will leave it here and hope everyone forgives my "Newbie St**ff - Up" ......Sorry.
Posted: Mon Mar 31, 2008 8:17 pm 
Getting Side Ways

Age: 69

Posts: 657

Joined: 24th Sep 2007

Gallery: 10 images

Location: Central Coast
NSW, Australia

Replace the BEM, it's likely it's the root of all your problems. Even if it's not, your unlikely to get anywhere without replacing it with a good one.



What goes around, comes around.

Posted: Mon Mar 31, 2008 8:21 pm 
Technical Contributor

Age: 39

Posts: 1032

Joined: 6th Nov 2004

Ride: Shockwave BA XR6

Power: 152 rwkw

Location: Caroline Springs
VIC, Australia

put a new neutral switch on the auto that will fix the auto shift problems
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