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Multiple problems stacking up – Mito 135 Sportiva 2013 – any advice greatly appreciated

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Hi everyone. New to the forum and new Alfisti since July. Since picking up my MiTo Sportiva in July there have been a few minor problems. Namely a P1063 error code intermittently with check engine light suggesting sticky valve on cylinder 3. Car running smoothly and seemed to be not a big deal.

I put the car in for its MOT 2 weeks ago – and it passed after some new rear shockers and a full oil service. This is when the problems began – but it could totally be a coincidence of course.
I was driving to work the other day on the motorway – not pushing it too hard at all. The temperature gauge suddenly and immediately flew up to maximum and the red warning light came on. Car started limping, loss of power – no hard shoulder. Crawled the remaining mile to my work, and in that time the temperature gauge returned to normal, the red oil warning light came on for 10 seconds then went off. Then the amber engine light came on for 10 seconds before going off. I parked the car and took the key OUT of the ignition and the windscreen wipers came on. Key back in windscreen wipers off. Left it all day at work to cool down while I figured out what to do.

I went back to the car and popped the bonnet to have a look, and noticed that the blower pipe at the top of the coolant tank had blown off and there was evidence that coolant had been spraying into the engine bay. I refitted the hose as best I could (and it seems tight and secure now) and refilled with water from the tap. Drove home carefully. Got home and popped the bonnet again. Noticed that coolant had still been spraying into the engine bay on my drive home (approx 20mins). The liquid in the coolant tank was boiling and bubbling violently. At no time was there white smoke out the rear of the car or steam coming out from under the bonnet – or I would've pulled over immediately. I topped up the coolant again and drove to my local garage (10mins). They had a look and said that there seemed to be nothing wrong. It's been with them all day and they just called to say that they can't do anything and it needs to go to an auto electrical specialist. Is this legit? I thought that everything to do with the cooling system was mechanical – whether there was a leaky hose, or a busted thermostat... etc.? It definitely seems like there's air in the cooling system, but I'm certainly no expert. What can I do? Any advice? I've asked them to drain the coolant and flush and refill with appropriate mix of coolant, because by now with all the topping up I've put about 3L of tap water into the system just to get it to the garage...
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If the coolant is boiling (and escaping from) in the bottle then it's not under pressure. If the pipe you reattached is still secure I'd start by looking at the cap. Less than a £10.

Check your oil quality too just be sure it's not a head gasket issue.
 

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Discussion Starter · #3 ·
Perfect Alfabrummie! Thanks so much. I’ve just run the car till warm and looked at all pipes and the pipe which came loose bubbles at the neck for approx. 1 second every 6 seconds. Will put a fresh jubilee clip on tomorrow and test again. If it holds airtight I’ll look at replacing the pressure cap.

just had a full oil service done two weeks ago with quality oil - so that should be ruled out… thanks very much for your reply - and have a great weekend!
 

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The expansion tanks are a weak spot, see also
They tend to crack in the connection to the rear pipe.
 

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Perfect Alfabrummie! Thanks so much. I’ve just run the car till warm and looked at all pipes and the pipe which came loose bubbles at the neck for approx. 1 second every 6 seconds. Will put a fresh jubilee clip on tomorrow and test again. If it holds airtight I’ll look at replacing the pressure cap.

just had a full oil service done two weeks ago with quality oil - so that should be ruled out… thanks very much for your reply - and have a great weekend!
I think the advice regarding oil refers to checking that there's no coolant mixing with it, which would indicate head gasket failure.
 

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Discussion Starter · #6 ·
I think the advice regarding oil refers to checking that there's no coolant mixing with it, which would indicate head gasket failure.
Ah right enough. No oil mixing with the coolant. All seems well. Thanks! Got a diagnosis this morning that the electric fan wiring is damaged too - which is all contributing to the overheating
 

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Discussion Starter · #7 ·
The expansion tanks are a weak spot, see also
They tend to crack in the connection to the rear pipe.
Thanks for the heads-up. I’ll keep an eye on it with that in mind.
 
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