Fuel Injection Warning Light - Alfa Romeo Forum
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Fuel Injection Warning Light

Sorry to butt in on your forum, but I thought I might find some clever chaps here....I have a GTV 3.0 V6 (Phase 2, year 2000).

A few weeks ago the Fuel Injection Warning Light came on. I took it to the Alfa dealer who diagnosed a problem in the "accelerator line". They fiddled about and the problem went away.

Now it's back on again. I took it to the dealer again and they said they didn't really know where to start fixing the problem, but that it is definately in the "accelerator line" ! It also looks like it has had a new throttle potentiometer before.

So they suggested they replace the throttle potentiometer for starters, as this was the cheapest option to start with ---- at £497 !!!!

So can anyone please answer the following questions:

1. Do the throttle electrical cables run directly from the throttle potentiometer to the throttle body (at the air intake) so that I could test them for continuity, or do they go via a computer ?

2. Has anyone managed to service a throttle potentiometer or throttle body or are they completely sealed units ?

3. Are there any other parts that might be causing this problem. (I know the Air Flow Meter can cause a fuel injection warning light problem, but is this actually in the "accelerator line" ?)

I'd really appreciate any advice.

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rehan samee
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I have had the same problem in my 156 (V6) -- twice during my 5+ years of ownership; the first time was about 2.5 years ago and was fixed by cleaning all the contact points along the accelerator cable (from the throttle potentiometer to the ECU). Last night the injector light came on again and this morning diagnostics revealed the same problem. The dealer has repeated the old procedure again which seems to be working.

In my experience (2.5 years ago and yesterday as well) the warning light came on after the car passed over an uneven surface (e.g. a joint on a bridge) at a speed over 80kmh.

As for your specific queries, you may want to check the following link: www.cuore-sportivo.co.uk/diagnosticpage.html

Hope that helps.


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Thanks very much Rehan. It sounds very similar to my problem.

Happy Christmas

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fuel , injection , light , warning

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