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Topic: Worrying Autobox problem (Read 2214 times) |
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and11
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Worrying Autobox problem
« on: Mar 20th, 2009, 1:20pm » |
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My auto sometimes goes into neutral when i stop. i stopped at traffic lights on a hill and kept foot on brake while leaving it in drive, when i took foot of brake to rev it started rolling back before suddenly thumping into gear and shooting forward. It happened ever so slightly a few days ago but this morning it happened several times. Can anyone give me advice? regards Andy.
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Highlander
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Re: Worrying Autobox problem
« Reply #1 on: Mar 20th, 2009, 2:07pm » |
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Just losing drive? You dont have to reselect D again do you?
Have you checked the oil level?
Cleaned the MAF? http://www.fordscorpio.co.uk/cleanmaf.htm
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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and11
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Re: Worrying Autobox problem
« Reply #2 on: Mar 20th, 2009, 2:44pm » |
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on Mar 20th, 2009, 2:07pm, Highlander wrote:
Oil is fine, seems to be drive and reverse, is there a sensor?
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Highlander
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Re: Worrying Autobox problem
« Reply #3 on: Mar 20th, 2009, 4:06pm » |
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It loses drive in both Drive and Reverse?
Did you check the oil using the correct method?
http://www.fordscorpio.co.uk/autogearbox.htm
Have you cleaned the MAF?
Are you having to reselect D again after it does it?
It does sound like oil starvation though, maybe an oil and filter change would help if the level is ok.
Of course it may just be the box is on the way out, they're all getting a bit long in the tooth now 
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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scorpio_man
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Ford Kuga awd
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Re: Worrying Autobox problem
« Reply #4 on: Mar 20th, 2009, 4:55pm » |
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hi there
might be also the band(s) on the way out. was there any bits in the fluid when you checked?
hth
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and11
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Re: Worrying Autobox problem
« Reply #5 on: Mar 20th, 2009, 6:25pm » |
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Update, its just slipping in and out of gear,does it in reverse too. the oil is fine, its a 1996 on 72000m. I thought autoboxes from 90's on could do at least double that. The oil is ok and clear. i mentioned the prob last week on the advice forum, it was under ' right hand heater blowing cold ' . The gears seemed similar to a clutch slip to start with at around 30mph the reved would sharply increase before change completed. I tried the maf clean and noticed a perfect change for a while until it came back worse. The wire that is on longest connectors in maff is still slightly brown and will not shine up but even so i disconnected the sensor and the gear problem remained. Andy.
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scorpio_man
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Re: Worrying Autobox problem
« Reply #6 on: Mar 20th, 2009, 6:57pm » |
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hi there
best to get a scan done.
could be a few things, 'box done, faulty MAF, etc.
hth
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and11
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Re: Worrying Autobox problem
« Reply #7 on: Mar 20th, 2009, 10:35pm » |
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on Mar 20th, 2009, 4:55pm, scorpio_man wrote:hi there
might be also the band(s) on the way out. was there any bits in the fluid when you checked?
hth |
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HI, the oil is clear, pinkish
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and11
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Re: Worrying Autobox problem
« Reply #8 on: Mar 20th, 2009, 10:58pm » |
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on Mar 20th, 2009, 6:57pm, scorpio_man wrote:hi there
best to get a scan done.
could be a few things, 'box done, faulty MAF, etc.
hth |
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Hi, i think maf is faulty, but i read on forum somewhere to disconnect it and go for drive, if other sensors ok the ' get home ' thing wont kick in, which it didn't. The point was if the gears changed properly then it is the maf but gears were still going into neutral. Anyways i'm hearing these cars are known for a catalogue of electrical probs? 
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and11
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Re: Worrying Autobox problem
« Reply #9 on: Mar 21st, 2009, 12:06am » |
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Wondering if this applys to scorpios,
I'd change the Transmission Range Sensor (TRS), also known as the Manual Lever Position Sensor (MLPS), and also known as the Neutral Safety Switch (NSS.) They are known to fail and cause the exact symptoms you are seeing.
I found this on a usa site, think it was chryslers they were on about?
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twinturbo
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Re: Worrying Autobox problem
« Reply #11 on: Mar 21st, 2009, 7:44am » |
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I have a complete spare A4LDE £50, if your anywhere near cumbria.
TT
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and11
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Re: Worrying Autobox problem
« Reply #12 on: Mar 21st, 2009, 1:09pm » |
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on Mar 21st, 2009, 7:44am, twinturbo wrote:I have a complete spare A4LDE £50, if your anywhere near cumbria.
TT |
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I'm in leeds, will go for that if i can find a fitter, but will have to find out if i need it for sure i will let you know asap, thanks
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Highlander
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Re: Worrying Autobox problem
« Reply #13 on: Mar 21st, 2009, 3:43pm » |
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You say its jumping in and out of gear and going in to neutral
Are you having to reselect the gear to get it to move again??
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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and11
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Re: Worrying Autobox problem
« Reply #14 on: Mar 22nd, 2009, 2:12am » |
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on Mar 21st, 2009, 3:43pm, Highlander wrote:You say its jumping in and out of gear and going in to neutral
Are you having to reselect the gear to get it to move again?? |
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Perhaps jumping wrong word, i stop at lights, when i take take foot off brake to go it rolls back as if in neutral so i pull hand brake, if i rev too much it will thump into gear and shoot forward, sometimes it will just move slowly like a clutch slipping on manual. Really bad now just slips in and out of gear, seems ok over 40mph but change up is always abnormal sharp rise in revs before complete change. I also tried a drive without maf connected but still same. It's same prob in reverse, 1 and 2, sport and o/v off
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and11
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Re: Worrying Autobox problem
« Reply #15 on: Mar 22nd, 2009, 2:42am » |
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on Mar 21st, 2009, 3:43pm, Highlander wrote:You say its jumping in and out of gear and going in to neutral
Are you having to reselect the gear to get it to move again?? |
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No, i tried to move through gears with stick but no differ, it does as it wants
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Snoopy
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Re: Worrying Autobox problem
« Reply #16 on: Mar 22nd, 2009, 7:42am » |
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You definitely need to get the fault codes read. It could be ony one of a number of faults or several .. from wiring to something as simple as the vss not working correctly .. just trying to guess at it will not help The box itself my also be faulty.. i.e. worn brake bands or a faulty torque converter... most garages these days can read codes as well some of the members on here. BUT without the fault codes you are in the guessing game and THAT can work out very expensive.
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and11
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Re: Worrying Autobox problem
« Reply #17 on: Mar 22nd, 2009, 12:21pm » |
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on Mar 22nd, 2009, 7:42am, Snoopy wrote:| You definitely need to get the fault codes read. It could be ony one of a number of faults or several .. from wiring to something as simple as the vss not working correctly .. just trying to guess at it will not help The box itself my also be faulty.. i.e. worn brake bands or a faulty torque converter... most garages these days can read codes as well some of the members on here. BUT without the fault codes you are in the guessing game and THAT can work out very expensive. |
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Thanks very much for advice, i will contact local garage tomorrow, Andy.
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Dave2302
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Re: Worrying Autobox problem
« Reply #18 on: Mar 22nd, 2009, 4:57pm » |
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I doubt this is electrical. If you can find a real good auto box man a valve chest change may cure it if they are prepared to try it. (the pressure reg valves suffer on these boxes). However it could just be a wear issue causing low pressure in the trans. Maybe replacement / rebuild time. Ive seen loads of them knacked at less miles than yours these particular boxes dont do loadsa miles when compared to say a ZF transmission.
HTH regards Dave (autobox specialist)
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and11
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Re: Worrying Autobox problem
« Reply #19 on: Mar 23rd, 2009, 5:41pm » |
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Yeah, well i got a diagnostic test booked on wednesday, i topped up with oil as the dipstick appeard low and when i move gearstick to one it always pops back into gear, but when stopped in 1 it wont move but if i move stick back and forward, to drive back down 2 and 1 it goes into gear again
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