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Old 21-02-2008   #1
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fuel ignition warning light

I had to have a new alternator fitted a few weeks ago and since then I now have the fuel ignition warning light on constantly and I am using more petrol. The mechanic who fitted the alternator has had someone do a diagnostic check but they couldn't get a reading.I am disabled and don't have a lot of money and I believe Auto Electricians are very expensive!!! I am hoping maybe someone has any ideas.
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Old 22-02-2008   #2
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Re: fuel ignition warning light

Follow up.Taken for diagnostic test today and they reckon I need a new ECU.The other thing they told me is that the RAC man that came out to me when I originally broke down should not have put jump leads on to my battery and charged it as this can damage the ECU.Does anyone know if this is correct?
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Old 22-02-2008   #3
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Re: fuel ignition warning light

Possible but rare on fiats (happens alot on alfas) dont suppose you know the error codes from the diagnostic?
Thanks dodgemeg thanked for this post
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Old 22-02-2008   #4
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Re: fuel ignition warning light

No,sorry I don't
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Old 22-02-2008   #5
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Re: fuel ignition warning light

Taken to a Auto Electric today to price ECU. They checked and the ECU is fine,showed problem with Pressure Sensor but couldn't get a code.They say they think there are two pressure sensors on the 90 ELX,one is the MAP sensor and the other is a fuel sensor. Any one know and if so could they have knocked....when the alternator was fitted.
Also whilst I have been reading posts on the forum I have seen references to a Red Key,what is it and what is it for and should I have one? Thanks
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Old 23-02-2008   #6
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Re: fuel ignition warning light

Quote Originally Posted by dodgemeg View Post
Taken to a Auto Electric today to price ECU. They checked and the ECU is fine,showed problem with Pressure Sensor but couldn't get a code.They say they think there are two pressure sensors on the 90 ELX,one is the MAP sensor and the other is a fuel sensor. Any one know and if so could they have knocked....when the alternator was fitted.
Also whilst I have been reading posts on the forum I have seen references to a Red Key,what is it and what is it for and should I have one? Thanks
red key is to re program ur ecu for ur imobilser incase u loose ur blue key'

also, if they cant get a code, change ur garage' cause thats stupid.
the map map sensor, fuel sensor is in the ecu'
even if the garage did knock this... its wrapped in a pritty tough metal plate'
inecjtion lights can mean alot of stuff as simple as a air leak and they might be taken advantage of u.,
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Old 28-02-2008   #7
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Re: fuel ignition warning light

Just to update and thank everyone. It was the MAP sensor, a small piece of plastic that a pressure pipe fits onto had broken off. £95 + £30 for the diagnostic test,much better than £300+. She's runnung like a dream now.
PS. Also the code problem occured because the Cabriolet come under the 1200cc thing and because mine is 1600cc it wasn't showing.
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Last edited by dodgemeg; 28-02-2008 at 18:12.
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