Hi, new to the forum and also Fiats!

I've had my '95 Cinq 899 for a few weeks now, bought from a friend. The car has always run well, it has been standing for a while though.

It is losing power / cutting out when accelerating, this eased recently but in the last two days has got worse to the point that I am struggling to complete a journey.

The injector malfunction light on the dash comes on sometimes and not other times, the engine will not allow you to rev or pull away until it has warmed up for a few minutes from cold. Currently it is cutting out on mid-range accelerator travel (most of the range now) ... it is (usually) happy with a slight amount of accelerator and also full throttle. Anything else and it's not.

It seems to be running rich, and is giving me 30mpg on mixed driving conditions.

Can anyone tell me where this fault is likely to lie so I can fix the poor little car and start enjoying it? Thanks in advance

Simon.

Hi

Please describe when the ECU light (the injector icon) comes on. Please say what happend when you lose power does it missfire or every thing go dead...

You could try Redex in petrol tank, if it has been standing a lot, and service it the e.g. replace the air filter, oil filter, and oil. Readex will remove any gum from the system which might cause similar or different problems...

The temperature sensor may have a problem but I'd do the service first.

The plugs and plug leads, might be the problem, ditto.

The high tension coils.

Please tell more.

Noel

I agree, service it first, new plugs and cables, can make a world of difference.

Service it first, agreed.

Then.

Check the TPS gives a smooth reduction in resistance across its range.

Cheers

SPD

rallycinq said:

Service it first, agreed.

Then.

Check the TPS gives a smooth reduction in resistance across its range.

Cheers

SPD

Click to expand...

Hi.

What's a TPS?

Have changed air filter so far, will be doing the rest this weekend hopefully.

The car became more driveable after posting here so that's something. The symptoms are intermittent / inconsistent. The injector malfunction light comes on when and if it feels like apparently, and the faults are not there or not when the light is or not - no correlation at all.

When the management light is on you are limited in your rev range.

Does it happens ONLY when the car is warm ?

TPS = throttle position sensor.

Ming

ycming said:

When the management light is on you are limited in your rev range.

Does it happens ONLY when the car is warm ?

TPS = throttle position sensor.

Ming

Click to expand...

Hi.

With the injector light on I can still have full rev range.

It isn't running right whether cold or warmed up, some days I can't touch the accelerator until it has had a few minutes to warm up from stone cold, other days it will rev without dying and I can drive straight away! Either way, it always seems happy with slight throttle or full carpet-denting throttle and is accelerates nicely with full throttle for a tiny engine!

All the hesitation / flat spot / cuttingout is anywhere between full and slight throttle.

The plugs came out and were black. These have been replaced and now when you start the car from cold instead of revving it's boobs off for a few seconds then settling down it does it for longer (haven't wanted to annoy the neighbours to find out how long it would do it for before chilling out!) but trying to pull away is still the same as described in this post.

Check your temp sensor against the nominals.

Cheers

SPD

rallycinq said:

Check your temp sensor against the nominals.

Click to expand...

eh?

how?

z

The temperature sensor is a variable resistor, you can check its resistance in situ, with a multi meter, both cold and after the engine is stopped after a run, that is easy to do, then type up results, and David will groan, or not as he case may be...

Noel

Pep0 said:

The temperature sensor is a variable resistor, you can check its resistance in situ, with a multi meter, both cold and after the engine is stopped after a run, that is easy to do, then type up results, and David will groan, or not as he case may be...

Noel

Click to expand...

ok, I'll have to find my DMM and do that. The brain is being read tomorrow hopefully which I assume will tell what it's not happy about / with. I'll update this thread with the findings for anyone with the same problem in the future, might save someone some time

z.

Your lucky you've found someone with the equipment to read it.

Cheers

SPD

zodiac said:

With the injector light on I can still have full rev range.

Click to expand...

Remembered being asked this and decided to floor it in 2nd and 3rd and turns out when the injector light is on I do have limited rev range; it behaves as if there is a rev limiter on it kind of.

z.

at 3500 rpm approximately.

Pep0 said:

at 3500 rpm approximately.

Click to expand...

Higher than that I think but no rev counter on the beast I can't tell for deffo

Ok, the little darling has been connected up for diagnostics this afternoon and apparently it's the Lambda sensor.

Hopefully that's all it is and it runs right after I replace it!

z.

zodiac said:

Higher than that I think but no rev counter on the beast I can't tell for deffo

Ok, the little darling has been connected up for diagnostics this afternoon and apparently it's the Lambda sensor.

Hopefully that's all it is and it runs right after I replace it!

z.

Click to expand...

Did it solve your problem ?