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Old 12-06-2006   #1
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Uno fire 1100 problem

Goodday all

i was wondering if somebody could help me. My car just keeps on cutting out when it idles. I have changed the carb, petrol pump, bougy cords, plugs, and put on new filters everywhere, treated the petrol, but i still have a problem. Can somebody please help me.

Thanks
Viper407
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Old 12-06-2006   #2
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Chas Uno has donated!
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Re: Uno fire 1100 problem

Quote Originally Posted by viper407
Goodday all

i was wondering if somebody could help me. My car just keeps on cutting out when it idles. I have changed the carb, petrol pump, bougy cords, plugs, and put on new filters everywhere, treated the petrol, but i still have a problem. Can somebody please help me.

Thanks
Viper407

Sounds like the infamous vacuum diaphragm on the distributor has failed - a very common fault. This has been covered many times before, and if you do a thread search for 'vacuum diaphragm' you will find some "how to's" and instructions for testing and replacing the unit.

To check the diaphragm, pull off the vacuum pipe from the carburetor that runs to the distributor. The pipe should be connected to a circular unit on the distributor itself.

Leaving the pipe connected to the distributor, blow or suck from the other end. If resistance (vacuum) is felt, then the diaphragm is ok. If you can continue sucking or blowing air then the diaphragm is shot and is most likely to be the cause of your problem.

Also, check the pipe itself for splits as this can cause the same symptoms.

Best of luck!

Chas
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Old 13-06-2006   #3
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Re: Uno fire 1100 problem

Hi Chas,

Thanks, i will do what you said today and i will get back to you and let you know whats happening. Thanks for the reply, i really appreciate it.

Regards
Viper407
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Old 18-06-2006   #4
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Re: Uno fire 1100 problem

Hi Chas,

I changed the Vacuum diaphram and i want to say thanks, it works like a charm, i have had no more problems. Thanks again for all the help.

Regards
Viper407
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Old 18-06-2006   #5
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Chas Uno has donated!
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Re: Uno fire 1100 problem

Always happy to help and keep another Uno running nicely Viper407!

Welcome to the Forum by way.

Any other Uno issues then feel free to post. There's a lot of knowledgeable people on here, and it's a nice little community too.

Good luck with your Uno, and glad to here it's running well now

Cheers!

Chas
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Old 05-11-2012   #6
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Re: Uno fire 1100 problem

hi,my daughters 1993 uno 1108cc / ies /50 just keeps cutting out as though starved of petrol -being a single point injection using a webber carb i suspected the ecu or crankshaft senser which lipscombs fiat maintaines is not shown as fitted !!!!!! even my local parts outlet has no listing for either???? clearly this is a nonsense because what else would operate the webber and other sensers.Plugs,leads,oil,DISTRIBUTER CAP all changed,earth connections cleaned.there is no consistence,it can stop after 100yds or 1/2hr of driving,fuel filter changed.latest is on tickover on cold day engine revs die down then increase then rad fan starts with engine not hot after 5min then engine revs increase and so on,so clearly A control SOMEWARE is misbehaving-can you help.
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Old 04-12-2012   #7
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Re: Uno fire 1100 problem

hay chas is the vaccum advance also a problem on the 1988 60s 1116cc model as well??
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Old 30-01-2014   #8
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Re: Uno fire 1100 problem

Quote Originally Posted by Chas Uno View Post
Sounds like the infamous vacuum diaphragm on the distributor has failed - a very common fault. This has been covered many times before, and if you do a thread search for 'vacuum diaphragm' you will find some "how to's" and instructions for testing and replacing the unit.

To check the diaphragm, pull off the vacuum pipe from the carburetor that runs to the distributor. The pipe should be connected to a circular unit on the distributor itself.

Leaving the pipe connected to the distributor, blow or suck from the other end. If resistance (vacuum) is felt, then the diaphragm is ok. If you can continue sucking or blowing air then the diaphragm is shot and is most likely to be the cause of your problem.

Also, check the pipe itself for splits as this can cause the same symptoms.

Best of luck!

Chas
Hi guys, I just bought a Uno 1100 few weeks ago. At first it had a bad idling as a result I had to keep my foot on the accelerator then time and again engine would stall now it cranks by not firing; when I turn the key off it is as if its about to start. At first I changed the ECU nothing happened, then I fitted a new petrol pump and even call an electrician to check the wires (he found no fault on wires) He suspected a mechanical matter carburetor being a 'suspect'. Could this be caused by vacuum advance/carburetor. Anyone please help, U can drop me an email as well to: syako@hotmail.com
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Old 02-02-2014   #9
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Germany 
Re: Uno fire 1100 problem

Cars with electronic ignition !
Note:
Itīs most likely a worn butterfly valve sensor.
Get a proper working injection unit an replace it.
Service all parts like filters , spark plugs and so on.
Check for corrodes cables an broken hoses.
Then reset the ECU by shortening the battery + cable to ground
for 30 sec. Then restart the engine without cutting out till it starts.
Let it run till the cooler fan turns on twice.
The ECU will learn to work perfectly on your engine.
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