Technical Huge problems with the electricity in my uno turbo

Currently reading:
Technical Huge problems with the electricity in my uno turbo

ob1e

New member
Joined
Jan 23, 2011
Messages
3
Points
1
Hello!
I am a guy who has problems with my uno turbo MK1!
I have big problems with the electricity in my car!

I have received much help from people with this car but the only way out is to replace all electrical wiring, previous owner (and some before) has been amended on electricity as much as everything is beyond help, the car has stood for over 10 years so resistance is very poor in electrical wiring, cables injection is okey but the power cables for the lights and rest are very poor,
My question is! Does anyone know if there are new cables to buy the car! Fiat dealers in my country have nothing left, but I think there should be someone that makes new to this car when it seems to be a common problem that the electricity is malfunctioning of this model!
The model is an uno turbo MK1 -1988 146a...

please help me someone!!!

Thanks!
 
Hmmmmmmm... replacing ALL el. cables would be HUGE job...

Maybe you still can save the old installation? Hey, ALL of our loved unos are old.... But cables still work :)
If you can point out the actual problems, maybe, just maybe someone can help you solve issues one by one, and therefore save you money, time and effort.
 
Clean up all earthing points !!! no need for new wiring, make sure all the contacts in your fuse box (can cause all sort of faults) are in good condition and free of corrosion, bit of a tedious job but, sounds like your car is crying out for this maintenance.

Let us know how you get on (y)
 
The original wiring loom wont be available now, even when it was, there were many different versions depending on car spec/country etc, plus it was expensive, the three main parts plus aux looms would cost around 800-1000 euro.

You may be able to get a similar one new from South Africa or Brazil, as the Uno is still made there, & they had a turbo (dont know if they still do). They may have even more complicated looms to meet different emmissions etc.

The trouble with that is working out which is the right one, there are over 50 wiring combinations on eper & there isnt much explination why.... plus most are no longer available...

I think your best option is to work out the issues with your loom & repair anything that needs repairing.

Another option is to find a used loom from a dismantled, crashed or scrap car.

Good luck!
 
Last edited:
I had this problem in my UNO 75.
I even had to clean the contacts of the switches in the middle of the dashboard.
You´ll need:
- a solvent spray for electrical contacts ( in Germany it´s called K70 )
- A glass fibre pen
- Sand paper
- A test Lamp or multimeter.
- Maybe a knife,cutter and a soldering device

You´ll even have to open the plug of the ECU to look for cables that may have corroded off.
The contacts of the lamps like to corrode as do the Plugs of the rear lamp unit.

You can test the cables with help of a friend, it will be cheaper than buying new ones. Usually it´s just oxidation between two different metals.
The UNO does´t have to many cables and the are sorted by function groups.
 
And, just a little comment on the power to the lights.

An excellent mod is to put in 4 relays, two for each headlight, hi/lo.
alex has a great write up on this. It will save the switches with low current only triggering the relays, and give you great lights.

I did this mod to one of my Unos, along with led lights to the dash and switches.

/R
 
Thank you all for your replies!
The problem 'is that me and my friend have picked everything up so everything has worked out, we have done in the dashboard of the car has been removed, after mounting the dashboard so it has worked very badly, my friend said that there is resistance in cables that are bad! Instead of picking out everything I thought I'd try to find new wiring harness, anyone know who to contact if you want new?
Can not get the right cables by providing your body number and other information?

Thanks!
 
Thank you all for your replies!
The problem 'is that me and my friend have picked everything up so everything has worked out, we have done in the dashboard of the car has been removed, after mounting the dashboard so it has worked very badly, my friend said that there is resistance in cables that are bad! Instead of picking out everything I thought I'd try to find new wiring harness, anyone know who to contact if you want new?
Can not get the right cables by providing your body number and other information?

Thanks!

You can check the numbers on eper, which I did to see the variations, the problem is virtually none of them are still available from Fiat as they have been discontinued.

You can try to work out the ones you need by putting your chassis number into eper, then write down all the part numbers, then start googling them to see if any ex-Fiat parts specialsts have them in stock.

I wouldnt hold my breath though....

Your best option is to find a company that remanufacturers wiring looms in your country, they will usually take your old loom as a pattern & remanufacture it, upgrading any bits you want upgrading as they go.

Any bad resistance your getting is much more likely to be bad connections than the actual wire though...
 
how well does croma turbo electricity cables in uno turbo?
Not the cables to the fuel, but without it the rest of the electricity!
 
how well does croma turbo electricity cables in uno turbo?
Not the cables to the fuel, but without it the rest of the electricity!

The Croma wiring will be completely different. Some of the plugs (connectors) may be the same and could be useful if yours are broken. For example, on the Uno Turbo the flywheel sensor plug is somewhere on top of the gearbox under the cooling system tank. If this is broken and water gets in, you will have problems with the engine. Check and repair if necessary.

As the others said, you don't need to replace all the wiring (unless you have had a fire!) instead, you just need to pay attention to all the connections, particularly the earth (ground) connections to the bodyshell. There are also a few components that sometimes cut off the power to the fuel injection electronics. For example, the fuel system relay (near the battery) and the ignition switch.
It is worth having a spare of each, just in case.

-Alex
 
Last edited:
Back
Top