ClioSport.net

Register a free account today to become a member!
Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Intermittent limp mode is sending me insane!



DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
I've had an intermittent limp mode for a few years now after the engine was last out for belts.

It can happen while driving, when stationary, or even when you turn the ignition on after being parked up, it can be weeks or even months between limp modes, so it's never done it around a clip so we can't get the bottom of it.

So far we've swapped the throttle pedal, the injectors and the inlet temp sensor, those three cured a few issues that showed up on the clip, but a week later it went into limp mode again.

Worth mentioning that the last time the engine was out Lambda 1 was still connected and ripped the pins out the male cable (the one connected to the loom) but that was repaired and there were no problems for weeks after belt change.

Ignore the A/C one, that got ripped out years ago.
1622834335089.png
 

Daniel

ClioSport Moderator
  Whichever has fuel
I hate to say it, but I had EXACTLY the same issue on a 182 years ago.

eventually we traced it to a damaged loom. The bit where it goes through the bulkhead. Every now and again a chafed wire would either earth out on the bulkhead or spike on one of the other damaged wires.
It had been to BTM and Birchdown (plus a main dealer and a local independent) but nobody could get to the bottom of it. I gave it to my auto electrician who spent a week on it in-between jobs and eventually traced it to that. He nearly gave up it was that hard.

symptoms (and how sporadic yours is) sound exactly the same.
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
Does it flash any lights up on the dash when it does it?
The electrical one in the middle, not the other one. (pic is not my car)

1622836751239.png

I hate to say it, but I had EXACTLY the same issue on a 182 years ago.

eventually we traced it to a damaged loom. The bit where it goes through the bulkhead. Every now and again a chafed wire would either earth out on the bulkhead or spike on one of the other damaged wires.
It had been to BTM and Birchdown (plus a main dealer and a local independent) but nobody could get to the bottom of it. I gave it to my auto electrician who spent a week on it in-between jobs and eventually traced it to that. He nearly gave up it was that hard.

symptoms (and how sporadic yours is) sound exactly the same.
Joy, I bet it's the Lambda 1 wire that got pins ripped when it was left connected last time the engine was out.

When it happens the engine starts struggling like it's missing and running out of fuel then dies, if you drive it like that it dumps loads of fuel in the oil because the injectors have no idea what's going on.
 
Last edited:
Only time I've seen that one come up is when a coil pack has dropped dead but you'd get misfire codes. It could be what Dan said but usually 172's rub where the ECU wiring comes out of the ECU case

Have you cleaned the white plug under the fusebox where the engine loom meets the body loom?
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
Everything been pulled out cleaned, contact sprayed, the lot.

I'll go throught it all again, the ecu box is missing it's cover, f*ck knows where it went.

Also forgot to mention the fault went away after i'd turned the ignition on and off a few times, so it drove home fine, that doesn't always work though.
 
Last edited:

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
I've got a Ryan, he's a trained auto sparkie.

I just need the Clio to behave long enough to get rid of the BMW and by a Golf, i'd buy a Golf now but I don't have the space.
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
I’ve got a 2.8 V6 4motion coming in part exchange on Monday!
Don't mate, that is on my list of cars to own, slow as f*ck, drink like a fish, but sound immense with a Milltek, f*cking love Mk4's!
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
I'm getting a 4 door PD130, tuning it to 200bhp and it'll still get more than 40mpg, it's going to be the new dog kennel once the back seats are gone, Erik struggles to jump into the BMW these days so he's getting his own door and I get to be a DUB scene wh*re again.
 

Eddie555

ClioSport Club Member
  Q7 2018 & 172 Cup.
This was happening to me. Mine ended up being the throttle body.

Sent from my SM-G977B using Tapatalk
 

Eddie555

ClioSport Club Member
  Q7 2018 & 172 Cup.
Don't think i've swapped that yet.
Mine had been doing it quite a while but then was ok. But luckily it happened while it was at Efi having a remap and Chris said it was the Throttle body immediately as it was plugged in and on the rollers when it happened. I swapped the body and its been fine ever since.

Sent from my SM-G977B using Tapatalk
 

Dr HMS Derv Destroyer

ClioSport Club Member
  MK1DTi/MK2DCI/ASTRA
Don't think i've swapped that yet.
We did change that then it threw a hissy fit and wouldn’t start at all with the solid red light came on....

Wondering if the loom above gearbox has a half broken wire in it. Those lambda wires seemed to be ok, got resistance checked to and from ecu plug , and load tested wiring to the plug. Something else is shorting I think
 

Archtronics

ClioSport Club Member
  Clio 182
Had this problem on two Clio’s as Dan’s said it’s the wiring loom shorting out somewhere.

First one it was the wires going to the temperature sensor.
Second one was where the aftermarket alarm is fitted into the wiring loom near the ecu.
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
Drove perfect today, no problems at all.

For all your advice and similar issues, it looks more and more likely that it's an intermittent short.
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
It f*cked up and cut out about 10 times in a row today, went to the park and back fine, went across the other end of the city no problem, but when I tried to go home it wouldn't even stay running for 10 seconds.

I had the electric and check engine light on, no amount of code clearing would fix it, every time I blipped the throttle the dash lit up and it cut out instantly.

Then as quickly as it went mental, it went away and drove home perfect.

Starting to think it's a dodgy throttle body rather than a short, it could be the throttle pedal but that got swapped, is the TPS is part of the throttle pedal or separate?
 

Porl

ClioSport Club Member
That throttle body is on the way, probably get delivered tomorrow with any luck. I cleaned the butterfly before sending it because I knew you wouldn't 😂

It'll be the throttle body by the sounds of things so hopefully, that one I sent you isn't fucked. If it is blame @Porl 😂
You didn't even test it first?
"Yeah Dave it'll be the throttle body, this'll fix it unless it doesn't then it might not be the throttle body or it might still be as nobody knows if the one I've sent you to fix it works or not 🤷‍♂️." 👌
 

DaveDreads

aka Philomena Cunk aka Barry Shitpeas
ClioSport Club Member
  172, E46 320D
F*cking did it again, cut out on a D/C this time which scared the sh*t out of me, looks like I might have more than one problem, this time both the electric and engine light came on, but after turning it off and on again i'm only left with the engine lght.

Plus it only has one fault code this time, looks like the TB solved the other two.

Pretty sure voltage regulator is alternator? It was a refurbed unit from about 6-8 years ago.

1623758385416.png
 
  BG 182FF
F*cking did it again, cut out on a D/C this time which scared the sh*t out of me, looks like I might have more than one problem, this time both the electric and engine light came on, but after turning it off and on again i'm only left with the engine lght.

Plus it only has one fault code this time, looks like the TB solved the other two.

Pretty sure voltage regulator is alternator? It was a refurbed unit from about 6-8 years ago.

View attachment 1543633
 


Top