Technical Euro6 1.2 Throttle Response, Hill Start Issues & Watchdog report

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Technical Euro6 1.2 Throttle Response, Hill Start Issues & Watchdog report

Clutch switch... theres an idea..

My twinair (punto) actually brings revs up as you bring clutch up

Not sure what the Ka does..?

Exactly the same, clutch just off the floor in gear revs rise, same if you pull away in 2nd. Try to add your own revs to the mix and it's either hoppatty hop hop or 3000 revs. I let a fiat 500 out of a junction the other day and I could see her car doing exactly the same.
 
Interesting, I have a 2015 ford Ka that I have had for around 4 months, as you correctly say you need to pull away on clutch only then with clutch fully up apply power. Not an issue if you not in a hurry but quick roundabouts are interesting. Hill starts are fine with mine. I have used bluefin/superchips in the past for my focus st and just recently they bought back my old handset, I was considering there remap but you have thankfully changed my mind. Cars great in all other ways, real shame about the pull away although I have got used to it. It would be OK if they could just map out the clutch switch.
Yes that's exact same issue. I thought it was only 2014 models but must also affect newer ones. I think it only affects models that didn't come with ECS traction control as those appear to have a different map and don't have this annoying problem. Superchips should be coming tomorrow to put the original saved file back and then I'll have a word with a local independant fiat specialist to see if they have an answer. As they're basically a fiat 500 in disguise I doubt that Ford will be much help. I got used to the clutch up first method but sometimes you just need that extra fast pull off without the fear of bogging down trying to get out a busy junction or roundabout.
 
Exactly the same, clutch just off the floor in gear revs rise, same if you pull away in 2nd.

The workaround is to mechanically unbolt the relevant clutch sensor and tie it somewhere out of the way, leaving it electrically connected. Without the wiring in place, it'll throw all sorts of error messages.

If you do this, there's no need for any remapping.
 
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The workaround is to mechanically unbolt the relevant clutch sensor and tie it somewhere out of the way, leaving it electrically connected. Without the wiring in place, it'll throw all sorts of error messages.

If you do this, there's no need for any remapping.
I did try disconnecting clutch switch but didn't really cure the high revs surge when pulling away, although I only disconnected it and as you say brought on engine light. If I get no joy I'll try again but unmount the sensor and leave it connected.
 
Yes I had read about error codes with clutch switch but it may have been unplugged rather than unbolted. I spoke to ford who wanted an hours labour at £138 to plug in there diagnostics to see if it needed an update, and mine has traction control and still does it, did try turning it off but made no difference .
 
Will tying the clutch switch out of the way cause other issues - ESP, hill holder etc etc?

Must admit I've got used to my own 2017 500S - and one thing I do quite like (showing how sad my life is!) is just having to use the clutch pedal crawling in heavy traffic.....though I agree fast starts (and on my car, hill starts) can be a little undignified. I will often stall a Euro 5 500 if I drive one....

All a bit cynical though isn't it, that this was presumably to make sure the car scraped through the Euro 6 emissions cycle by having a completely controlled and repeatable drive takeup. It must have been really tight getting the good old 1.2 through Euro 6!

All that said the overall average in my 500 is a not startling 38.3 mpg (even my Giulietta QV does 31.3!)

Nick
 
Interesting. The 2015 500C 1.2 that my wife had until last year raised the revs as you lifted the clutch, but it pulled away using standard techniques perfectly well. As someone said above, the feature is useful when in slow moving traffic. The 500X I used to run did the same.

The 2018 Renault Captur that my wife drives now also has that feature, although it seems slightly less aggressive. The 2018 Hyundai i30 that I drive now doesn't do it at all, so it's far from universal.
 
Interesting. The 2015 500C 1.2 that my wife had until last year raised the revs as you lifted the clutch, but it pulled away using standard techniques perfectly well. As someone said above, the feature is useful when in slow moving traffic. The 500X I used to run did the same.

The 2018 Renault Captur that my wife drives now also has that feature, although it seems slightly less aggressive. The 2018 Hyundai i30 that I drive now doesn't do it at all, so it's far from universal.

Our 52 plate Micra also raised the revs crawling in 1st raised it to 1000 tickover was under 800 so may have been round longer but didn't raise revs as you let out clutch?
 
Our 52 plate Micra also raised the revs crawling in 1st raised it to 1000 tickover was under 800 so may have been round longer but didn't raise revs as you let out clutch?

It appears to be a mixed bag

My 2012 punto does raise revs with the clutch...2014 doesnt

Our 2013 panda doesnt either.. odd.
 
Is there any mileage checking with your friendly Fiat dealer whether there's an upgraded map available? Euro 6 was rushed in at short notice, so most manufacturers just tweaked their engine maps and the result was a lot of ****e-ness.

Since then they would have had plenty of time to do the map properly.

I'm wondering because my neices both have 1.2 (2018 and 2020 from memory) and they don't have any negative comments about the take-off, though they're new drivers with nothing to compare it to, potentially.

However, the brother in law has a fairly grudging attitude towards Fiat.. he's driven both and would likely whinge to me, if they were too shocking. He hasn't mentioned it either, apart from the throttle seems to ignore what you're doing and do what it wants (fly by wire, so probably true).. Maybe these later cars have a better map?



Ralf S.
 
I've driven a range of 500s including early and late Euro 6 cars and can't detect a consistent difference. Indeed one early 2014 Euro 6 car in my acquaintance seems to drive more sweetly (and with easier takeoff) than my own 2017.

But there seem to be "sweet" and "not so sweet" individual Marelli ECUs in my experience...they're not very consistent (and haven't been since at least Bravo/Brava days....) :rolleyes:;)
 
Just seen this thread and all I will say is that ours is a very late 500S 2013 car and had this same bogging down issue. After a few years of asking the Fiat dealer, they had a new Tech join who had come across this "feature" on a certain amount of fiat 500's. His suggestion was to see if the ECU would accept an update even though it was not earmarked as needing it.

Ask for a flash ECM

From Old Part Number MM9GFHWN01-00-2F02_A47-0000
To Current Part Number MM9GFHWN01-00-2L12_A57-0000

Otherwise I would have gone down the superchips route.... this way the car is not modded

It does appear stop / start no longer works, but it drives like it should, no bogging down at all, and otherwise just as before.

If anyone has any further details it would be good hear as all I know, is that it was fixed.
 
Just seen this thread and all I will say is that ours is a very late 500S 2013 car and had this same bogging down issue. After a few years of asking the Fiat dealer, they had a new Tech join who had come across this "feature" on a certain amount of fiat 500's. His suggestion was to see if the ECU would accept an update even though it was not earmarked as needing it.

Ask for a flash ECM

From Old Part Number MM9GFHWN01-00-2F02_A47-0000
To Current Part Number MM9GFHWN01-00-2L12_A57-0000

Otherwise I would have gone down the superchips route.... this way the car is not modded

It does appear stop / start no longer works, but it drives like it should, no bogging down at all, and otherwise just as before.

If anyone has any further details it would be good hear as all I know, is that it was fixed.
That's good to know, cheers. If the Ford KA euro 6 use the same fiat ecm software I'm going have a word with a local independant fiat specialist.

Re the stop/start not working, if the display shows it's activated try giving the battery a full charge. When I got my car the SS never worked until I gave the battery a full charge as it only works when it detects battery is in good condition. Although I keep mine turned off and can easily live without the stupid thing.
 
In my ford ford ka I keep the SS turned off, with it turned on it will stop the engine but then restarts about 10 seconds later without touching or operating anying
 
That's good to know, cheers. If the Ford KA euro 6 use the same fiat ecm software I'm going have a word with a local independant fiat specialist.

Re the stop/start not working, if the display shows it's activated try giving the battery a full charge. When I got my car the SS never worked until I gave the battery a full charge as it only works when it detects battery is in good condition. Although I keep mine turned off and can easily live without the stupid thing.

Yes have tried all that, even 150 mile round trips.... it don't work, but not at all bothered by it, actually prefer it not working. Small price to pay for a 500 that drives they way it should
 
Yes have tried all that, even 150 mile round trips.... it don't work, but not at all bothered by it, actually prefer it not working. Small price to pay for a 500 that drives they way it should
Yes I would happily trade having fixed drivability over the Stop/Start.
Did they do anything else to your car or was it just install the new flash ecm software?
 
Just to update on my 14 plate euro 6 KA. I had a word with a local independant fiat specialist who knew about the problem. He recommended a local remap firm that he uses which cost £150 for remap and I'm happy with the results. Much smoother pull off and better throttle response. If I use throttle when lifting the clutch I would say there is still a very ever so slight momentary dip in revs before picking up but nothing like before and the revs don't go stupid high and kangeroo away. If I want to I can still pull off just using the clutch but now there is instant responce when I press the throttle. Previously when using the clutch to pull away and then pressing throttle there was a second or so lag which made pulling out onto busy roads or roundabouts dangerous. Overall I'm now happy with the how it drives.
 
Just to update on my 14 plate euro 6 KA. I had a word with a local independant fiat specialist who knew about the problem. He recommended a local remap firm that he uses which cost £150 for remap and I'm happy with the results. Much smoother pull off and better throttle response. If I use throttle when lifting the clutch I would say there is still a very ever so slight momentary dip in revs before picking up but nothing like before and the revs don't go stupid high and kangeroo away. If I want to I can still pull off just using the clutch but now there is instant responce when I press the throttle. Previously when using the clutch to pull away and then pressing throttle there was a second or so lag which made pulling out onto busy roads or roundabouts dangerous. Overall I'm now happy with the how it drives.
Good result, what's the name of the remap company.
After owning mine for a good six months I still kangaroo or over rev, wouldn't mind so much if I was a new driver but I passed when I was 18 and I'm now 56 😳
 
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