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Old 18-08-2013, 04:07 PM   #1
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Default Transmission shift eratic

Hi fellow Ford people. My 1st time on.
I have an AU3 dedicated LPG. A great car BUT the transmission has a mind of its own. I can be cruising along at 100 kph or where ever and it will back shift for no good reason, or as I slow down it will back shift. It could go for weeks without a problem and then give grief all day !!
I have been told by a transmission bloke that it was a common problem and it was the inhibitor switch (neutral/start swith). I replaced it with a brand new genuine part but its still the same. Anybody got any ideas ??
Cheers folks.

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Old 19-08-2013, 09:23 AM   #2
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Default Re: Transmission shift eratic

Welcome to Aff Ford, what else, if possble, go to a trusted mechanic & get a ecu scan - it could be couple of things (tps?), the scan will pinpoint the problem. Also give the inhibbitor switch plug a good clean if you havent already. Have a look at this link -

http://www.fordaustraliaforums.com/f...c-gear-changes.

cheers, Maka
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Old 19-08-2013, 12:53 PM   #3
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Default Re: Transmission shift eratic

I had a similar issue with my trans. A service with filter and oil change corrected the problem. I believe the issue was caused by my filter being too clogged, starving the trans of fluid. This would also explain the intermittant nature of your problem.

Good luck sorting it out.

Cheers
Stu
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Old 19-08-2013, 11:42 PM   #4
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Default Re: Transmission shift eratic

a common problem ?? mines never had a problem other been worked hard and getting a little soft in the changes after 200,000 +k's ,
had any electrical issues in the past ???
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Old 20-08-2013, 07:48 AM   #5
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Default Re: Transmission shift eratic

[QUOTE=mik;4854360]a common problem ?? mines never had a problem other been worked hard and getting a little soft in the changes after 200,000 +k's ,
had any electrical issues in the past ???


Thanks for all the suggestions people. I've only had the car a short time but there is no other issues with it. The service and filter sounds like a good place to start but !! The trans has been replace at some stage (I no this because it has a dip stick !).
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Old 20-08-2013, 10:33 AM   #6
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Default Re: Transmission shift eratic

I believe it is possible to have a filler tube fitted, so it may not have, service sounds like a good place to start though.
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Old 20-08-2013, 02:52 PM   #7
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Default Re: Transmission shift eratic

[QUOTE=mik;4854590]I believe it is possible to have a filler tube fitted, so it may not have, service sounds like a good place to start though.






Nah, you can't fit a dip stick tube to the later model box, Different housing all together
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Old 20-08-2013, 08:16 PM   #8
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Default Re: Transmission shift eratic

yes you can, the marking is on the inside of the box, it can be drilled from underneath with the pan removed
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Old 21-08-2013, 07:33 AM   #9
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Default Re: Transmission shift eratic

[QUOTE=naughtyfalcon;4855124]yes you can, the marking is on the inside of the box, it can be drilled from underneath with the pan removed






Yeah, OK... Didn't no that ! The next time I've got the pan off a late one (hope thats not too soon). I'll have look.
Thanks for that mate.
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