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Punto 2012+ 2013 Unplugged Green Punto Twinair

Introduction

So I've returned to the Fiat fold again after some brief encounters with French, Swedish and German cars.

I picked up a Punto Twinair just shy of 2 weeks ago mostly based on the colour alone.

Personally I absolutely love the colour and was the only reason I went to look at the car as I'd virtually chosen to disregard a Twinair car. After test driving though I really enjoyed the TA and so here we are.

I've covered just over 500 miles so far, the first tank about 60% motorway, 20% mixture of dual and single carriage way A roads and another 20% of town work. The onboard computer spat out 47mpg, after brimming the car again fuelly calculated 44mpg so not miles out.

Good bits;
  • Its similar to the Grande Punto, my first car, so things are quite familiar just with a refreshed look. Makes it easy to drive if un-envolving.
  • Noise. The thing most ordinary 4 banger superminis don't have is much of an exhaust note. The TA sounds great IMO.
  • Comfortable, did a 6 hour journey at the weekend, no numb bum at the end of it so a big plus.
  • Nobody seemed to buy the last gen of Punto so its suitably rare especially in this colour.

The Bad;
  • Twinair is weird to drive, I totally understand the people who don't like the engine. It can be too noisy especially in 1st and 2nd gears when road noise is low. You cant really drive it below 1500rpm and I like to keep it above 2000 to avoid labouring it.
  • This might be Punto specific rather than all TA's but the 6 speed box has very short gears, not the sort of thing you expect from an engine that creates its grunt in the middle of the rev range. You have to go up and down those gears a lot to maintain good progress.
  • Gearbox, following on from above its not got a positive engagment, I quite often find myself glancing down at the gearstick to check what gear I've selected. Reverse doesn't ever feel like its 'gone in'.
  • Bodyroll, I don't remember my Grande rolling this much but maybe its because I've had much stiffer cars since then. It leans and wobbles if you take a roundabout quickly. It doesn't feel like it'd understeer unless prodded harder but the bodyroll is comical.
  • It feels quite quick at lower speeds (sub 50mph) that its easy to forget on the motorway its not a fast car and in the outside lane it can get a bit out of breath.
  • Somehow Fiat have managed to design alloy wheels which look like hubcaps. At some point if a nicer set come up for a reasonable price I may look to change these.

TL;DR - I like it despite its foibles, which it certainly has plenty. The TA engine is fun but I understand people who dislike it.
Well after 3 more days of faultless driving it did something weird again today, it started but a bit slower than usual, had to hold it on the starter for ~5secs. The Speedo and rev counter needles were jumping up and then falling back down to 0 very quickly over and over accompanied by a clicking (like a relay). They stopped doing it after a few seconds and then all was normal...
I hate electrical issues.....
 
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Yep seems battery related. I have an OBD gauge as a permanent setup in the car which shows oil temp, map sensor and voltage. Usually the battery is charging at 13.6-13.7v (this is normal on a TA, they have a ‘smart’ alternator which varies output dependant on charge), jumping up to 14v when cruising or 14.5v coasting.
This has been a constant ever since I got the car but today I kept an eye on it on a 20mile trip and the entire journey it was charging at 14.3v, it’s never dipped below that so I’m taking that as the car seeing a low state of charge...

I’ll leave it for 24hours or so and check the voltage with a multimeter with the engine off and some accessories switched on to confirm.
 
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I’ve let it sit about 48 hours and tested voltage;

With the battery sat in situ as is I got 12.44, seems ok to me after sitting a few days?
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With mainbeam on, rear demister and interior fan at max it dipped to 11.5
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Is that an acceptable drop? This is of course without the engine having been started. I know during cranking a battery can drop as low as 9v without there being any problems with the battery. Not sure what voltage to expect with this load.
 
Start the engine, put the meter on the windscreen and then turn the steering to full lock each side, see if you get a big drop then.

In a good battery id probably not want to see such a big drop with those accessories switched on
 
Its been a while since I’ve really updated this,
Sometime last year I upgraded the front speakers, the old ones are trash. I forgot to take a photo until after I put the door card back on so...



The original speakers moulding mounts them slightly forward of the door whereas the replacements sit flush which is causing the window to bump the back of them when its all the way down so I’ve been meaning to space them forward, I keep telling myself I’ll get around to it.

Added some obligatory stickers.



Also changed the spark plugs, no idea the age of the ones that were in there but I’ve seen plugs in a worse state. It was a bit of a pain getting them out and back in from the deep recess they sit in because I don’t have a magnetic socket but I ended up using the rubber boot on the coil to pull them up and out.



And lastly I fitted an intake because induction noise > exhaust noise IMO.
Again I did have a picture of it fitted but I cant find it so here’s some boxes...
I had monitored intake temps from OBD for a few weeks prior to fitting and then after and its no different, I think the intercooler on the Punto TA’s is the same as 105TA’s in the 500 so its cooling the charge easily. The turbo seems to spool slightly faster? But I honestly cant tell, I was just after cool turbo noises and not any actual power gains :devil:



The battery issue never came back after the few incidents but I have a new AGM battery ordered just to see if I can get the start/stop working really :rolleyes:
 
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