Fiat Misfire - Repair Help

Swap the coil pack connections around and see if the fault moves to another cylinder
 
markyp23 said:
Hi,
Thanks for suggestion.
Not got access to fault finding kit any more as the guy has gone.

Any idea of coilpack or headgasket repair costs?

Sorry, just trying to figure out if we need local fiat franchise or any other garage would do? - why does this stuff always happen at worst possible time?!

Cheers
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I wouldn't bother sending a car that old to a main agent.

If it's a headgasket problem it is likely to do more damage if you carry on using the car. Have a look at the oil, if it looks like rancid mayonnaise then it's defiantly the head gasket (although don't rule it out if there's a complete lack of mayo).
 
K.C. Leblanc said:
I wouldn't bother sending a car that old to a main agent.

If it's a headgasket problem it is likely to do more damage if you carry on using the car. Have a look at the oil, if it looks like rancid mayonnaise then it's defiantly the head gasket (although don't rule it out if there's a complete lack of mayo).
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What I found in my Punto that died of HGF
Severe boiling off of coolant (topping up every day)
Dirty coolant
No mayo
 
Disconnect the other 3 coil packs in sequence,it should get worse when started each time - I.e check coil 1 makes things worse, reconnect and move onto 2, you should notice little to no difference doing this with coil 3 - if so just replace it
 
markyp23 said:
Hi,
Thanks for suggestion.
Not got access to fault finding kit any more as the guy has gone.

Any idea of coilpack or headgasket repair costs?

Sorry, just trying to figure out if we need local fiat franchise or any other garage would do? - why does this stuff always happen at worst possible time?!

Cheers
Click to expand...

Take it anywhere, it doesn't need to go to the dealer.

The FIAT FIRE engines are prone to the HG failures, but the 1.6 isn't from that family so HG failure isn't that common. BUT, it could be a large number of things. Bad spark plug, coil pack, injector bla bla. So you're best off taking it somewhere and getting them to check.

rodenal said:
Disconnect the other 3 coil packs in sequence,it should get worse when started each time - I.e check coil 1 makes things worse, reconnect and move onto 2, you should notice little to no difference doing this with coil 3 - if so just replace it
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This just proves that that cylinder isn't firing / is misfiring, which we already know. Following what you've said my lead him to replace the coil pack and still have the same problem - the fault could be compression or fuel, not just the coil.
 
True but the first thing you would replace is the sparkplugs / coilpack - other than move it to one of the other cylinders what else is the op going to do without taking the car somewhere (which I'm nit suggesting is a bad idea) without even basic diagnostic equipment

Depends on the other signs and how much a replacement is I guess
 
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No just take it to whoever, say its running rough and what the diagnosis has been so far then let them take it from there, let them tell you what the issue is - you have an idea of possible resolutions already, make it clear you want to k ow what the issue is and cost of fixing before any work is done
 
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Get rid and buy something else.

This will only be the start. I wouldn't bother fixing it to be honest.
 
markyp23 said:
Do we get coil pack replaced then see if that fixes it then move on to consider HGF? Or is there some diagnostics can be done before spending the money on coil pack?
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Yes, as already suggested, swap no. 3 coil pack with another cylinder and see if the fault moves with the coil pack.
 
Not sure it is exactly the same but had something similar on a 2002 punto. Turned out that the coil had failed in some way that caused HT to travel back into the ECU and killed that channel on it.

Ended up with a refurb blank (not immobilizer programmed) which sorted it until we sold the car 3 years later.
 
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