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Topic: 2.3 autobox faulty gear selection (Read 409 times) |
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Mick999
Newbie
 
Posts: 21
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2.3 autobox faulty gear selection
« on: Sep 2nd, 2005, 6:02pm » |
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I have what appears to be a common fault with my autobox in that occassionaly whilst driving the box changes gear then appears to select neutral the drops back into gear (without gear stick moving) There's no rhyme or reason for it either. the cars not driven hard at all and has covered 65k only!
I'm going to try the MAF cleaning suggestion tomorrow that i've seen on another post and I'll let you know what happens.
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Mick999
Newbie
Posts: 21
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Re: 2.3 autobox faulty gear selection
« Reply #2 on: Sep 3rd, 2005, 10:29am » |
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Ok I'll give it a go. Is it quite easy to see once the covers removed?
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: 2.3 autobox faulty gear selection
« Reply #3 on: Sep 3rd, 2005, 1:15pm » |
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hi there
i'm not sure. haven't done it myself, but you'll get a better view with them removed. 
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Mick999
Newbie
Posts: 21
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Re: 2.3 autobox faulty gear selection
« Reply #4 on: Sep 10th, 2005, 3:38pm » |
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I cleaned the maf the other day and the car ran sweet as a nut for a day or two but then it did the same thing again. I've yet to try the second thing with the TR sensor. Will keep you posted.
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Steve_S
Full Member
1997 scorpio ultima 2.9 24v lpg
 
Posts: 655
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Re: 2.3 autobox faulty gear selection
« Reply #5 on: Sep 10th, 2005, 4:17pm » |
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Had much the same problem a while ago, it turned out to be the oil seal had failed behind the selector (pringl) box causing it to become contaminated. Symptoms, intermittent slipping out of drive into neutral or low gear, slowly becoming more frequent over a month or so,. later harsh and / or incorrect timing on gear changes. New selector box was fitted at a cost of just over £300. It can damage the box so fault needs to be fixed quickly. Check for swarf in the box, change oil if necessary
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Steve S
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Mick999
Newbie
Posts: 21
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Re: 2.3 autobox faulty gear selection
« Reply #6 on: Sep 10th, 2005, 8:24pm » |
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Cheers for that steve. Does sound like you had the same problem I have. I'll look into getting the selector box changed.
BTW did you change yours yourself?
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Eric_R
Administrator
Cosworth Owner 1998 - 2006 & site co-founder
Posts: 1792
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Re: 2.3 autobox faulty gear selection
« Reply #7 on: Sep 11th, 2005, 1:16am » |
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Mick,
Before you commit yourself to a particular thing, have you had the OBD codes read?
Is the speedo a bit erratic, perhaps? If it is then it would be the VSS faulty rather than the TR sensor and would be a lot cheaper to fix.
If either are faulty they would record a Diagnostic Trouble Code (DTC) - perhaps you could ask to meet with an OBD equipped owner and have them checked first.
The problem might also be sticking solenoids.
Have a look through http://www.fordscorpio.co.uk/autogearbox.htm and see if that helps.
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After a Cosworth, anything else is just ... ordinary
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Mick999
Newbie
Posts: 21
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Re: 2.3 autobox faulty gear selection
« Reply #9 on: Sep 11th, 2005, 9:05am » |
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Simmo thanks for the link...I have an aftermarket stereo in mine so I'm unable to try that one 
Eric,
Can you take your equipement into work on Mon 12/sep and I'll come and see you in the morning?
If you email me your mobile number I'll give you a call to confirm time.
michaelghoward1@hotmail.com
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Steve_S
Full Member
1997 scorpio ultima 2.9 24v lpg
Posts: 655
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Re: 2.3 autobox faulty gear selection
« Reply #10 on: Sep 11th, 2005, 11:43pm » |
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I don't think the selector box is a DIY job, I believe it may require the lowering of the box to gain access, then it needs specialist setting up on re-fitting. If you have tried everything else and the problem persists then I would suggest having a specialist diagnose the problem before proceeding.
I take it the oil level is fine?
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Steve S
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Mick999
Newbie
Posts: 21
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Re: 2.3 autobox faulty gear selection
« Reply #11 on: Sep 12th, 2005, 9:17am » |
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Steve, The oil level is fine..it's the right colour too! I'm gonna try and arrange to meet with eric and have him plug his box of tricks into the old girl to hopefully diagnose it.
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