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Topic: O/D light flashing (Read 1796 times) |
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mikesone
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O/D light flashing
« on: Jul 10th, 2010, 6:44pm » |
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The o/d light starts to flash about 10 seconds after the engine starts. The only effect I notice is that it wont go into top gear, otherwise the engine runs ok, no wierd noises, 70mph at about 3000 revs. Have disconnected the maf sensor and nothing changes, so the maf is ok?
Any ideas?
Thanks,
Mike
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gozz
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Posts: 3475
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Re: O/D light flashing
« Reply #1 on: Jul 10th, 2010, 6:48pm » |
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It,s telling you there is a fault,an OBD readout will clarify it.
GOZZ.
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: O/D light flashing
« Reply #2 on: Jul 10th, 2010, 7:01pm » |
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on Jul 10th, 2010, 6:44pm, mikesone wrote:The o/d light starts to flash about 10 seconds after the engine starts. The only effect I notice is that it wont go into top gear, otherwise the engine runs ok, no wierd noises, 70mph at about 3000 revs. Have disconnected the maf sensor and nothing changes, so the maf is ok?
Any ideas?
Thanks,
Mike |
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If its not ok, unplugging it won't make any difference 
Is your speedo working ok?
could be a variety of causes, an OBD scan is needed as Gozz said
http://www.fordscorpio.co.uk/odlight.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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mikesone
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Re: O/D light flashing
« Reply #3 on: Jul 10th, 2010, 8:33pm » |
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ok, thanks, suppose Ford will charge an arm and a leg
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mikesone
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Re: O/D light flashing
« Reply #4 on: Jul 10th, 2010, 8:35pm » |
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P.S. am I going to kill it if I run it with the light flashing?
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Matt
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Manual'd and a 4.0 in the making
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Re: O/D light flashing
« Reply #5 on: Jul 10th, 2010, 9:19pm » |
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no, but u might not have 4th (overdrive) so any high speed driving will be in 3rd
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FDS2000 Scans - Birmingham
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Mike H
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Renault Clio
Posts: 2594
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Re: O/D light flashing
« Reply #6 on: Jul 10th, 2010, 9:50pm » |
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Dunno, is it driveable? Does the gearbox work normally as far as you can tell?
Could also be a wiring problem, there's another page about that somewhere
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Mike H
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mikesone
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Re: O/D light flashing
« Reply #7 on: Jul 11th, 2010, 12:44am » |
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Yes, it drives well, speedo works normally, all I notice at the moment is no 4th gear
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mikesone
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Re: O/D light flashing
« Reply #8 on: Jul 11th, 2010, 1:04am » |
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before I buy a lead and software, is the Scorpio Ultima 24v OBD2 compliant?
Apparently it's the system they use on the software........
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Simmo
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Re: O/D light flashing
« Reply #9 on: Jul 11th, 2010, 7:50am » |
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If you read This page it should answer your question. If you post your location,or put it in your profile, there may be a member nearby who could do a scan for you.
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Now I'm an OAP
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gozz
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Re: O/D light flashing
« Reply #10 on: Jul 11th, 2010, 12:24pm » |
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You won't need to entertain the mighty Ford empire,any small garage needs an
OBD 2 scanner to be able to operate,and you should be able to grease the man's palm .
GOZZ.
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budgie
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Re: O/D light flashing
« Reply #11 on: Jul 11th, 2010, 3:32pm » |
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just a thought but when my o/d light started to come on now and again it transpired it was my loom causing this which i then had to replace.
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mikesone
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Re: O/D light flashing
« Reply #12 on: Jul 11th, 2010, 10:45pm » |
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OK, I know a fairly friendly garage, will ask them.
Another thing I notice is it will do 70 at 3000 revs with no problem, but when I take my foot off, the revs drop immediately to just above tickover, but the car doesn't start to slow down as you would expect, it feels like it is coastng, but put your foot down and it picks up again.
I am in Birmingham
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Highlander
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Re: O/D light flashing
« Reply #13 on: Jul 11th, 2010, 11:07pm » |
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it is coasting, its on overrun, the injectors will be switched off and it wont be using fuel.
It should be slowing down though unless you have discovered perpetual motion
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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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mikesone
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Re: O/D light flashing
« Reply #14 on: Jul 12th, 2010, 11:43am » |
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Yes, it does slow down, but not as quickly as usual when you take your foot off, like I said, it's coasting along as if it were in neutral
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Highlander
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Re: O/D light flashing
« Reply #15 on: Jul 12th, 2010, 12:00pm » |
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Sounds normal, the revs should drop to tickover and the car coast when you lift your foot
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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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Mike H
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Renault Clio
Posts: 2594
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Re: O/D light flashing
« Reply #16 on: Jul 12th, 2010, 12:47pm » |
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Must admit haven't taken much notice!  There's a one-way clutch for the O/D isn't there?
on Jul 11th, 2010, 10:45pm, mikesone wrote:| Another thing I notice is it will do 70 at 3000 revs with no problem, |
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That sounds like O/D (4th gear). If were stuck in 3rd would be higher thasn that. Like if O/D is turned off (green button). (?)
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Mike H
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Mike H
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Re: O/D light flashing
« Reply #17 on: Jul 12th, 2010, 12:52pm » |
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That's a thought, is there a problem with the wiring for the green button in the transmission selector lever? So it's randomly & intermittently turned on and off?
Didn't someone else have a problem with a wire dropping off inside? Can't remember if it was same kind of symptoms though
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Mike H
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Highlander
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Re: O/D light flashing
« Reply #18 on: Jul 12th, 2010, 1:49pm » |
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on Jul 12th, 2010, 12:47pm, Mike H wrote:| That sounds like O/D (4th gear). If were stuck in 3rd would be higher thasn that. Like if O/D is turned off (green button). (?) |
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No thats 3rd, 3000 rpm in 4th is a bit high
on Jul 12th, 2010, 12:52pm, Mike H wrote:That's a thought, is there a problem with the wiring for the green button in the transmission selector lever? So it's randomly & intermittently turned on and off?
Didn't someone else have a problem with a wire dropping off inside? Can't remember if it was same kind of symptoms though
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Possible but Mike has a constant flashing OD light rather than an intermittent one and it never goes into top gear.
The wire that came off just disabled the switch function with no other issues
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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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Danny_R
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97 Ford Crown Vic 4.6L V8 ,88 Mercury GM 5.0L V8
Posts: 381
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Re: O/D light flashing
« Reply #19 on: Jul 12th, 2010, 5:04pm » |
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I had this very same problem, it turned out be one of the shift solenoids inside the tranny. OBD reader is the only way to know for sure. You'll probably find it's solenoid C thats gone bad or sticking. Sometimes a transmission flush and a new filter will sort it out.
Danny_R
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