???????? Limps but not in limp just cuts out

R

Rst666

Hi al was just wondering if anyone could shed some light on my problem. Today and couple of days ago my 1.2 k12 . Went into a limp mode sort off state. but no eml on but it was like a flooded sensation. But when it satlled bit to turn over and start up.bit when it dose a big plume smoke and unburned fuel smell. I've changed. Spark plugs service her. But struggling to find a cure. As worried as take me eldest daughter to specialist appointments and don't want it to happen on the motorway. as It happens without warning . Any help would be grateful cheers guys.
 
Mika The Finn said:
Have you inspected/cleaned battery terminals/cables?:unsure:
Click to expand...
No I haven't I'll have a look. It's strange did it today twice the problem.and it acts like a flooded engine. idle is very erratic and changed spark plugs no codes though.idid suspect throttle body and air box. But with maf plugged in there.and thp sensor thought would throw up a code but nothing. Thanks for reply I'll check terminals tomorrow.
 
Rst666 said:
No I haven't I'll have a look. It's strange did it today twice the problem.and it acts like a flooded engine. idle is very erratic and changed spark plugs no codes though.idid suspect throttle body and air box. But with maf plugged in there.and thp sensor thought would throw up a code but nothing. Thanks for reply I'll check terminals tomorrow.
Click to expand...
You got me thinking then lol.when bought the car few months back I cleaned the throttle body.and the do not touch screws was in line with the marks. On the do not touch screws. Could that have something to do with it. As I had a civic couple of years back. And that had a problem with throttle body but it threw it into limp mode.the Micra when bought it. As had quite a few things that have been uncovered. And not been maintained or fixed properly.
 
Don't forget to feed 12V to battery cables, when removing them from battery terminals.
NOT doing this, you will need 'RADIO CODE'...;)
Like most here, when they disconnect battery to change it.
 
Hi to everyone.and thanks for all your recent replays.passed mot on Friday with some problems but got through grrrrrrr. Went out with the family yesterday and we was at a busy junction went to set off and the car stalled and basically wouldn't move. I managed to get it restarted with accelerator pedal fully pressed down and fired up with a massive plume of blueish smoke. No warning light on so continued on my way. Another two times of this problem. Until 2 and half hours at the roadside waiting for the aa. Then still no warning lights he followed me home and then. Up a hill struggled and loads of blue smoke. But still no code. The aa guy witnessed this and did think cat and also the emissions did flag up on mot. But they said cat could be on the way out. So with a huge bill already didn't want to make it bigger for me . Any suggestions as I'm penny less and in desperate need of a solution. And my wit's end could it be cat or anything else help plz guys.
 
I would check condition of cat on the inside could it possibly be blocked or damaged?
Check if it's an oe part or aftermarket one.
To check the inside it would need to be removed.
To reinstall possible needs some new gasket ect.
Remove the down pipe and then under the manifold or the manifold.
You would then be looking to see the condition of the inside honey comb if this is all melted and or blocked this would probably cause the over heat you described.
I'm not sure but you could knock out the center really not reccomending this but might work to get you by till you find replacement.
I was tempted to do this myself check it that is and then replace.
This may help you to remedy this issue until you get replacement.
Down side is you may not like the noise and I wouldn't reccomend running without the cat for emissions reasons.
Sometimes the honey comb can be melted and this would block the exhaust fumes exiting properly maybe it causes a back flow and when it gets really hot then it let's it all go at once in the form of blue smoke?
As far as using for a family car if its really loud it won't be an option for you but if you figure it's definitly the problem you can look into replacing or having the thing cleaned if that is something you would be prepared to have done.
Maybe are other ways to check sometimes the comb can be loose you you might hear it rattle when shaken.
Could also use a bore scope camera type thing that would at least let you view with only taking off the down pipe.
This would cost something to get hold of but would make for quick diagnosis.

Limp mode can be annoying I have only seen it happen once and it was short journey.
It does help to save ur engine tho from catastrophic failure.
So does have that advantage can't really think of anything else other than saftey but that's kinda questionable ?
 
Last edited by a moderator:
Sparky2018 said:
I would check condition of cat on the inside could it possibly be blocked or damaged?
Check if it's an oe part or aftermarket one.
To check the inside it would need to be removed.
To reinstall possible needs some new gasket ect.
Remove the down pipe and then under the manifold or the manifold.
You would then be looking to see the condition of the inside honey comb if this is all melted and or blocked this would probably cause the over heat you described.
I'm not sure but you could knock out the center really not reccomending this but might work to get you by till you find replacement.
I was tempted to do this myself check it that is and then replace.
This may help you to remedy this issue until you get replacement.
Down side is you may not like the noise and I wouldn't reccomend running without the cat for emissions reasons.
Sometimes the honey comb can be melted and this would block the exhaust fumes exiting properly maybe it causes a back flow and when it gets really hot then it let's it all go at once in the form of blue smoke?
As far as using for a family car if its really loud it won't be an option for you but if you figure it's definitly the problem you can look into replacing or having the thing cleaned if that is something you would be prepared to have done.
Maybe are other ways to check sometimes the comb can be loose you you might hear it rattle when shaken.
Could also use a bore scope camera type thing that would at least let you view with only taking off the down pipe.
This would cost something to get hold of but would make for quick diagnosis.

Limp mode can be annoying I have only seen it happen once and it was short journey.
It does help to save ur engine tho from catastrophic failure.
So does have that advantage can't really think of anything else other than saftey but that's kinda questionable ?
Click to expand...
Thank you
Sparky2018 said:
I would check condition of cat on the inside could it possibly be blocked or damaged?
Check if it's an oe part or aftermarket one.
To check the inside it would need to be removed.
To reinstall possible needs some new gasket ect.
Remove the down pipe and then under the manifold or the manifold.
You would then be looking to see the condition of the inside honey comb if this is all melted and or blocked this would probably cause the over heat you described.
I'm not sure but you could knock out the center really not reccomending this but might work to get you by till you find replacement.
I was tempted to do this myself check it that is and then replace.
This may help you to remedy this issue until you get replacement.
Down side is you may not like the noise and I wouldn't reccomend running without the cat for emissions reasons.
Sometimes the honey comb can be melted and this would block the exhaust fumes exiting properly maybe it causes a back flow and when it gets really hot then it let's it all go at once in the form of blue smoke?
As far as using for a family car if its really loud it won't be an option for you but if you figure it's definitly the problem you can look into replacing or having the thing cleaned if that is something you would be prepared to have done.
Maybe are other ways to check sometimes the comb can be loose you you might hear it rattle when shaken.
Could also use a bore scope camera type thing that would at least let you view with only taking off the down pipe.
This would cost something to get hold of but would make for quick diagnosis.

Limp mode can be annoying I have only seen it happen once and it was short journey.
It does help to save ur engine tho from catastrophic failure.
So does have that advantage can't really think of anything else other than saftey but that's kinda questionable ?
Click to expand...
Thank you sparky2018 defo going to consider the options as there is a lot riding on this.
 
Does the car have 1 cat or 2, the one with two has one under chassis.
Mine is the older version and only has one.
Not sure how much difference that would make if it does have two it may make what I'm saying invalidated but it's very much worth while checking what's what cause you already seem to have had plenty of work done to the vehicle in the past.
A tip I have is aftermarket cats may work but they might not last as long so savings might be possible with the con of longevity.
As far as I recall you may pick up a used one from Germany or Europe for instance that is is nice condition vs UK ebay used sellers that seem to be trying to sell things that are barley worth installation.
 
Hi sparky2018 thanks again. Sorry for the late reply especially this time in the morning lol. So new update at the time of the post you put. I got on with it and borrowed my mates drive it took a while. So my mate like be seconds round the corner. And is literally a 10 second derive lol. Got there went to get under a low and behold the cat was red hot. Wow weird rest of exhaust stone cold.so that told me cat screwed. Anyways your first post I took the information. from on my own will and decided to gut it. All the hondecomb out which was broke in big chunks. And set about under the dark night with a touch getting it all out. And then started her up. And wow I couldn't not tell the sound much different to before. So took her for a bit off a.spin and wow no probs up to now was at temp got hot and pulled. Like a miniature horse lol. It's only temp solution till can gat a new one. But again thank you for the information and help.sparky2018 legend bro keep on rolling lol..
 

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