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Author Topic: Corsa automatic - warning light.  (Read 1117 times)
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brian123
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on: 11:48 24 06 2004

I've got a 1994 Corsa 1.4 Automatic.
Each morning I turn the ignition and the engine fires fine, however as soon as I try to put the transmission into Drive, the orange sport light starts flashing and it enters 'limp mode'.

If you allow the engine to warm for about fifteen minutes, you can then switch off the ignition, and back on  -  it will then let you engage Drive (without the warning light coming on)!
After this initial warm up, the car drives great - smooth gearchanges etc.

It will continue to drive OK after stopping and restarting - unless you leave it parked for longer than about 5 hours - after which you have to re-warm up the engine!

I tried using a fault reader - but there were no codes recorded.
I think myself it must be a faulty sensor, has anyone else experienced this problem or have any ideas what the problem is.
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Derek Edwards
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Reply #1 on: 11:53 24 06 2004


Most of these I've seen were faulty selector switches. Do you have live data on your code reader?

Derek
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brian123
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Reply #2 on: 11:57 24 06 2004

Just used one of those 'Draper' readers.

Thought that if the selector switch was faulty the problem would happen whilst driving, too.

I have changed the transmission fluid (after) having the fault.

Can run through all gears, including the Sport mode - no problem, once the engine is warm.
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Derek Edwards
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Reply #3 on: 12:10 24 06 2004

Is it reading codes for the transmission? Cheaper tools often only do engine

Derek
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brian123
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Reply #4 on: 12:20 24 06 2004

Not certain about that - think it may just be checking the engine.
It plugs into the ALDL diagnostic fuse, on the main fusebox panel.

Can you suggest a code reader that will also check transmission?
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Derek Edwards
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Reply #5 on: 12:36 24 06 2004

Not cheap enough for use on a single car. You may be able to get flash codes on this system. Try this site http://www.topbuzz.co.uk/ for more info. If you can't find the answer, let me know and I'll see what I can find.

Best regards
Derek
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brian123
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Reply #6 on: 10:22 28 06 2004

Think I've found the answer to the problem!
Thanks to your reply about faulty selector switches, I decided to try starting my car in neutral then pressed the sport mode switch (the light came on the dashboard). I left it 5 seconds, then switched sport mode off and put it into drive - result the car didn't go into limp mode and drove fine.
So it looks like you were right, a faulty selector switch.
I will replace the switch, but at least for the moment I don't have that warm up problem!

Thanks for you help.
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gn8691
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Reply #7 on: 09:38 16 11 2005

I have the same problem as above.
Anyone know where the selector switch is located?
Thanks.
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marilyn
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Reply #8 on: 22:34 10 01 2006

The selector switch is located in a sealed unit.just had mine diagnosed by vauxhall. Taking it, that your battery is on the right. The selector switch is in a sealed metal (almost triangular) box. in front of the battery and about two inches below and slightly to the left (has a small hose attached) but appatently the engine has to be dopped in order to disengage it. Vauxhal quoted 349. part cost 250.00.

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gn8691
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Reply #9 on: 20:04 13 01 2006

I've just fixed mine. It can be taken apart. Looky here http://homepage.ntlworld.com/igcrawford/vauxhall_corsa_automatic_selecto.htm
Haynes manual tells how to get it off.
You can then seperate the two halves of the switch (six screws) and clean out all the old dried up grease.
Be carefull not to drop anything  Shocked Then reassemble and the light wont appear again for another 10 years hopefully.
The tricky part is getting at the wiring connector below the battery.
The rest is easy when you've got it on the bench in front of you.
Hope this helps. Grin
ps If your reversing lights are also working intermittently then this switch is most likely your problem. I had flashing warning light and reverse light problems.
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