Clio 182 Engine woes...
Discussion
Evening All,
I'm after a bit of advice, I've done lots of searching but seem to be running out of ideas... My 182 failed it's MOT on a few things, the main one being emissions. It's always had a very lumpy idle and if left idling for a long time, the EML would come on but went off after turning it off and on. Recently, the light has been coming on more often but goes went straight off under load when it got to around 4k rpm. It failed the MOT on emissions to the garage suggested putting some additive in to clean it. I plugged in my cheap OBD reader and using the Piston App, discovered an 02 sensor fault and a misfire on cylinder 3, it was still running fine at this point but the light was coming on more frequently than it used to. I got a 2 part assistive pack from Halfords, put the first bottle in and ran it through a full tank (with 98 RON). I used that tank and then put the second part in, it may well be coincidence but over this time I think it's been getting worse.
What I've done since then:
Changed the Pre Cat Lambda - 02 sensor no longer a fault but still got a misfire on cylinder 3.
Swapped injector 2 with injector 3 - still got a misfire on cylinder 3
Changed the spark plugs - still got a misfire on cylinder 3
Changed the coil pack - still got a misfire on cylinder 3
Changed the ignition leads - misfire on cylinder 2
Put the old number 2 lead back on - still got a misfire on cylinder 2
Next thoughts are that I could switch spark plugs between 1 and 2 to see if it's still spark related but I'm running out of ideas... HELP???
I'm after a bit of advice, I've done lots of searching but seem to be running out of ideas... My 182 failed it's MOT on a few things, the main one being emissions. It's always had a very lumpy idle and if left idling for a long time, the EML would come on but went off after turning it off and on. Recently, the light has been coming on more often but goes went straight off under load when it got to around 4k rpm. It failed the MOT on emissions to the garage suggested putting some additive in to clean it. I plugged in my cheap OBD reader and using the Piston App, discovered an 02 sensor fault and a misfire on cylinder 3, it was still running fine at this point but the light was coming on more frequently than it used to. I got a 2 part assistive pack from Halfords, put the first bottle in and ran it through a full tank (with 98 RON). I used that tank and then put the second part in, it may well be coincidence but over this time I think it's been getting worse.
What I've done since then:
Changed the Pre Cat Lambda - 02 sensor no longer a fault but still got a misfire on cylinder 3.
Swapped injector 2 with injector 3 - still got a misfire on cylinder 3
Changed the spark plugs - still got a misfire on cylinder 3
Changed the coil pack - still got a misfire on cylinder 3
Changed the ignition leads - misfire on cylinder 2
Put the old number 2 lead back on - still got a misfire on cylinder 2
Next thoughts are that I could switch spark plugs between 1 and 2 to see if it's still spark related but I'm running out of ideas... HELP???
I hate searching to find threads without the solution posted so thought I'd post an update in case it's useful for anyone else.
I first swapped plug 2 with plug 4 - cleared codes and misfire still on cylinder 2
I then swapped injector 2 with injector 1 - cleared codes and misfire now in cylinder 1! Promising news...
I had bought a spare injector to keep in the tool bag after a previous issue that was resolved with replacing an injector so swapped this over and the change in sound was immediate. It's been running well for a while and it seems to have cured the problem. Thanks for all of the comments, I might try a set of these NGK plugs once everything else is sorted but it seems to be back running well with the Bosch plugs for now.
I first swapped plug 2 with plug 4 - cleared codes and misfire still on cylinder 2
I then swapped injector 2 with injector 1 - cleared codes and misfire now in cylinder 1! Promising news...
I had bought a spare injector to keep in the tool bag after a previous issue that was resolved with replacing an injector so swapped this over and the change in sound was immediate. It's been running well for a while and it seems to have cured the problem. Thanks for all of the comments, I might try a set of these NGK plugs once everything else is sorted but it seems to be back running well with the Bosch plugs for now.
I may have spoken too soon... As I mentioned earlier, I changed injector number 1 and it was running fine and pulling strongly throughout the rev range on the way to the MOT this morning. Possibly because it was left idling for a quite a long time (it's never liked that) but when they came to doing the fast idle test, it was misfiring and failed the fast idle test.
The lambda reading was 1.13 with a max allowed of 1.03. It was clearly misfiring when he drove it out the garage so when I went out to the car and plugged in the obd, it was misfiring on cylinder 1 again! Turned the car off an on and then it was running fine again! I think it would pass if it wasn't misfiring but as it also failed on headlight washers, I didn't need ask them to retry it there and then.
Has anyone else experienced this after leaving it to idle for a while? I've ordered a set of the NGK plugs from Renault as well as replacement headlight washers that should hopefully be there by tomorrow.
Any other ideas? I'm hoping to get it sorted tomorrow night, MOT'd on Saturday and on track at Silverstone on Sunday but I'm running it of wiggle room!
The lambda reading was 1.13 with a max allowed of 1.03. It was clearly misfiring when he drove it out the garage so when I went out to the car and plugged in the obd, it was misfiring on cylinder 1 again! Turned the car off an on and then it was running fine again! I think it would pass if it wasn't misfiring but as it also failed on headlight washers, I didn't need ask them to retry it there and then.
Has anyone else experienced this after leaving it to idle for a while? I've ordered a set of the NGK plugs from Renault as well as replacement headlight washers that should hopefully be there by tomorrow.
Any other ideas? I'm hoping to get it sorted tomorrow night, MOT'd on Saturday and on track at Silverstone on Sunday but I'm running it of wiggle room!
Thanks for the suggestion. As it was around 4.5 years ago, it's all a bit vague but I think it was injector related.
I checked the MOT history and it seems it passed on the Saturday before my track day on the Sunday so all was well! I sold it about 4 years ago but good to see that it's still on the road!
I checked the MOT history and it seems it passed on the Saturday before my track day on the Sunday so all was well! I sold it about 4 years ago but good to see that it's still on the road!
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