mmm.. had a control pipe on a supercharged mini - tiny split and no way to see it by eye. Had the car on and off in limp mode for weeks 'til we bit the bullet and paid a clever person to find it .. sadly seems the way with modern cars.
yes agreed, like spraying brake cleaner and easy start round can sometimes give clues as well but with some cars they are so complex and compact, unless your willing to invest the time to work it all out it can be soul destroying.
You do need to know the function of the pipes and bits though, with an older more traditional car you could fairly quickly work out what the bits did and then diagnose what the symptoms fitted. I've no doubt with time its all straight forward and if it was your own car you could spend a while working it out.. but I suppose it depends how much your time is worth to you.
I had the car reread today and after clearing the messages it seems to be fixed. It seems that after replacing the airflow meter it needed doing. At least it worked ok after the 1 mile journey from the garage. See what tomorrow brings!
And tomorrow brought...........................message back and limp mode!! Damn. Now the only other engine related fault logged was the glow plugs. I don't get the icon on the dash at first turn on of power so perhaps that is the fault. He reckoned he could not clear that fault and thinks the relay might be stuck! The relay is not one of those itty bitty ones but a beefy expensive brute!
Yes I know thanks. All I need to do is find it on the car!. My worry is that if it is stuck on then the plugs themselves could/should be knackered and that can be a saga. There seems to be a difference of opinion on the Peugeot forum I use that this would bring up a "air pollution fault" message. Somebody wrote that being a direct injection engine it does not need them to start but they are there just to keep the pollution down during the start! That plus keeping the noise down that is!
Wife's 306 HDI starts fine with the glowplugs disconnected and I don't get any warning messages on PP2000 about it either. I've haven't left them disconnected as it is a little sluggish to start when it's below freezing without them, but it does start after a extra second or 2 cranking.
I've also disconnected the heater plugs in the water pipe to the heater matrix, they had failed so I just removed the relay, again no errors logged.
If the temp is too high to engage the system then the system would not see a fault. If the relay stays energised then the system would see a fault I would have thought. BUT it is French so who knows!
NO is the answer keithski122. I would rather sort it myself. I am an engineer by trade and can normally sort most faults out. The problem with this is that it is a Peugeot and from what I have gleaned so far is the so called "experts" at the dealers for example are not up to much. Their pp2000 system is a pain and even the experts do not know how to read that! Other readers can read the car but apparently their data does not always relate to the Peugeot system!
Mr fuzzy according to a member on the Peugeot forum the glow plug system would not put the car in limp mode. The relay is controlled by the ecu using temperature as the driver. Also being a direct injection type engine the glow plug is not there to help it start per say but to help it to cut the noise of a cold start and lower the pollution. As the ECU is the driver even though the relay might be stuck on once the temp exceeds the control point power to the relay should be cut.
Can you reach the glow plugs with it running?
You could check the voltage to them then to see if the relay is sticking on, not sure if yours has a two stage supply to them though, my Toyota plugs start at full lower then ramp down after a few seconds.
To be honest I can't see a duff glow plug or relay causing this problem.
But it is French.....
Looking at the link mrfuzzy sent that relay has 5 pins!
Are some of them some kind of sensors? Could the car ecu detect a fault if it intermittently sticks on?
Mmmm worth testing if the plugs stay live then finding that little bugger!
Common sense tells you that on a normal diesel that is true as regards how a diesel works. BUT with the pollution legislation as it is coupled with Peugeots interpretation of those rules I think the "Antipollution Fault" is generated by the ECU for any engine defect that occurs whether it is logical or not and the ECU then automatically puts the engine into limp mode as a result. This engine is a basic turbo diesel unlike the 1.6 and 2.0L versions which have a lot more gubbins on them to go wrong. DPF etc.
AzE_B I have a good make reader that I have used on VW and Suzuki cars but does not communicate with the French it seems. It is mostly in limp mode and quite honestly would not know driving around the town. The only time I realised was when I ran a bit long in second and realised it was restricted. Saying that once or twice I have tried revving it to find it goes up the range on a couple of throttle floorings to then revert back to limp.
You have to half strip the engine to get access to the plugs and injectors as they are in the right side of the block which is windscreen side as it sits transversely.
And the glow plugs tend to snap off and then it gets a big pain. As I said, the glow plugs are there for purpose other than starting the engine as it does not need them for that. So I don't mind them not working in that sense. It is just this limp mode thing I want fixing. As I have tried to explain getting the car read with the so called "proper" system is a no-no as I would not trust the dealers to do that properly. Even if they could they seem to be out to misdiagnose so that they can get more cash from you. There is nobody close to my area on the Peugeot forum who has the system on a laptop and even that is a lottery as most/all of the discs come from china and are often the wrong edition and don't work fully or at all! On top of which you need a laptop that has certain criteria to use it on. From my experience of buying these discs for cars it is a lottery. I have had a couple that work minimally and one that we could not get to upload even though my son followed the instructions. Contacting the supplier was a waste of time and anyway ebay delisted him although he had two or three accounts!
It is still not fixed. I am having to live with the defects at this time as I am working on my daughters car and she has my Tiguan. Anyway, I started the car today after not using it for a couple of days. The engine started and straight away I got the antipollution message. No change there. But then I decided to rev the engine and lo and behold it went full range! Two minutes later I revved it again and it was back in limp mode!