Hiya well Max RPM 3000 sometimes No power

[FalconII]

Hiya well heres my problem.

Thanks in advance for any advice.

Fault codes are comming up
P0380
Glow Plug/Heater CKT
A Maulfunction
and
P0903
Clutch Actuator
Circuit High
also the Handbrake Switch thing with Low Brake Fluid.

The Above faults I dont think are Major Biggys as the car drives fine with them on or off. but I have only just bought the Fault code reading stuff. So have not quite workied out the ins and outs of them.

My main fault seems the following
Starts No problem in the morning Cold or Warm day. No Smoke. Pull away and seems to lack in power for about 100 meters. Then Picks up a bit But I dont get the Turbo boost as I did in the Last one i had. I have felt the pipes and when you rev the turbo seems to be blasting air into them. I dont think its as hard as my Vitesse was but that was a beast. at around 1500-1800 RPM you can hear a faint whistle of the turbo Starting to kick in. I have however been told that a slight whistle at lower RPMs can be the fins inside the turbo are damaged or missing.

When the Car Warms to normal running temp, it seems to still lack any real punch sometimes it will drive fairly well but Not what I would expect. Then Today I went on a 50 mile trip then back again, just delivering a computer. I had to realy push to get it to go up very slight hills then it would seem to be fine.

When i got near home I tryed to pull out on a Buzy road the gap was big enough that a bus pulled out right behind me but I couldnt get the car to rev higher then 3000 RPM it took me an age to get to 30 on a 60 road. then I pulled over and took the car out of gear and floored it. the revs went to 3000 RPM. Having the Fault code reader to hand I plugged in and read the codes. same two codes as above, I didnt clear them but pulled away with the slow acceleration. then by the next junction it was driving fine again.

The Car is a Mk2 99-04 HDI 110 on a T Reg first of the New shape. 1997cc

I have been told the EGR Valve might be at fault. or that the turbo blades are buggered. before I go spending £300 on a New turbo are there any things I can do to try and cut down the problems it might be.

The Turbo pipe expands from its normal sise to about half a thumb more in diamiter on acceleration. Thats why I suspect its somthing else.

Please help me before i Go mad I have only had the car a week and its been slow but fine till today.


Cheers again In advance. Peter

[teamster1975]

Hi Falcon
Sounds like it may be the mass air flow meter. There's been a spate of them recently!
Read supafrisks posting here.
Hope this helps,
Matt

[FalconII]

Thanks I Didnt think of the MAF. I may try giving it a clean, The car has Been service at every chance since new. but I dont think it was service for the last 25000 miles, just due to how bad the Air filter was. it was BLACK. LOL I am sorting the glow plugs tommorow, and cleaning the other half of the car, so may as well get the contact cleaner out and clean the MAF.

[Welly]

I wouldn't bother with the glow plugs - it won't need any.

The trouble with the 'Glow plug fault' is that it can mean other things! I've had this fault on mine but it was something else on the same circuitry. The ECU is a bit slow in coming forward with clues for you and you really need some decent software to read the thing deeply.

The clutch actuator/brake switch sounds like it's do do with cruise control - you have to tell the code reading equip that it hasn't got cruise otherwise it will look for it and find faults that aren't applicable.

If it starts afer a couple of revolutions on the starter then the glow plugs will be fine - in fact the HDi doesn't really need glow plugs as it sprays such a fine mist of Diesel (already hot under pressure) it always starts.

I would look towards Air Flow Meter, Vac Pump, leaks in the vac lines from the solenoids on the bulkhead etc. The Turbo will be fine - these never give any trouble.

Other trouble can be Throttle Position Sensor (although this one likes to flag the Check Engine Light) and the crank sensor (this one likes to shut down the engine suddenly).

[mbell666]

According to James it common for the HDI ecu's to miss report:

P0380 - Glow Plug/Heater CKT A Maulfunction

I.e. the ecu is incorrect and there isn't a fault. My old car reported this fault the whole time i had it and would come back if i cleared the fault. I'd ignore it, i dont think its related.

[Welly]

My ECU reports 'Additional Heating' fault all the time (this is the electric cabin pre-heater in the matrix) but there's nothing wrong with it

[Welly]

Have a look here it pretty much says ignore that error code
http://www.ilexa.co.uk/forum/index.php/ ... 252.0.html

[FalconII]

Thanks for that I already have new glow plugs so I may as well fit them.


"The clutch actuator/brake switch sounds like it's do do with cruise control - you have to tell the code reading equip that it hasn't got cruise otherwise it will look for it and find faults that aren't applicable."
I dont have Cruse control. I cleared it last time by turning the engine off and holding the clutch down then clearing the fault code and turning the engine off, the clutch pedel is high biting point eg about 1 cm down and its at biting point. so think I may need a new clutch.


If I were to block off the pipes which one would i do the two selnoids look to be geting suction but I am not used to HDI Engines I have always had petrol engines.

[FalconII]

I have just had a look and I think the EGR Valve is the one near the bulk head where the two selnoid things are its spitting oil out when you rev high from inside the pin under the valve. turbo seems to be fine. throttle being drive by wire has at some point be rewired it seems to be reacting fine, and the MAF seems to have also been rewired at some point.

[Welly]

The EGR does sound knackered but I don't think it normally makes that much difference to performance.

The fact that someone has fiddled with the wirng is interesting as I found out today (on that there website above) that Peugeot anounced a 'fix' on these cars early on where cars were getting repeated Throttle Position Sensor faults. Apparently the MAF and the Throttle switch share earths and it was found that by separating the earths from these things then it often cured the engine light coming on and expensive parts being replaced.

I'd be careful replacing the glow plugs if you don't need to just in case one snaps off in the head (high mileage) and gives you a whole heap of trouble - might be best to get a refund?

Oh and I'm not too hot on the Vac/Solenoid system sorry

[FalconII]

Well Just an update. The cars Sortof working, I am going to have to bung it on a scope to find the main fault. Speed is better, after cleaning the EGR Valve and testing it it seems fine just its well clogged. I have changed the selnoid with a new one, and have been reliably ??? informed by the mechanic at the Pegout garage to put some cleaner through as the injectors are buggered. the only thing that wrong with that is that i have a sevice stamp in the book for the same thing about 6 months ago. but its been done and new fuel filter at the same time.

It seems to be running better eg more pickup but still no noticable turbo boost. same through out 1000-5000 RPM. it also anoyingly did the 3000 RPM thing when it was running okay so that must be somthing different.

pulled over at the roundabout pulled out and nothing power all missing Maximum revs were 3000 RPM and there for second gear could only slowly get me to about 35 MPH 3rd took an age to get me to 45 ish and 4th had just got me to 60 then i put the car to 5th. the power just apeared as it had dissapeared. however it does seem to happen just a bout 1-2 seconds after pulling out on a roundabout, this may be just because there lots on our main roads but I dont know.

Any HELP ;-) would be appreatated. and is there a chap who knows these cars out there who lives in the north east that can just look at the car and or take it out and just go AHHHH that is the Duffle Maker making the car go Woopy Loopsey.

LOL PS I Still know very little about desils.

[teamster1975]

I remember him saying it was a frequent ailment.

Is that on any engine or just the diesels Supa?

[jameslxdt]

According to James it common for the HDI ecu's to miss report:

P0380 - Glow Plug/Heater CKT A Maulfunction

I.e. the ecu is incorrect and there isn't a fault. My old car reported this fault the whole time i had it and would come back if i cleared the fault. I'd ignore it, i dont think its related.

yep, this is spot on, its an error in the diagnostic side of EDC15C2, it affects any common rail diesel using this bosch system
there is absolutley nothing wrong with the car it just says there is, its always p0380, but can be interpretted as 'glow plug primary circuit malfunction' or 'glow plug circuit A mulfunction' or 'no fault error description'
when i used to work at volvo, the s40/v40 with the renault Dci engine would always show it as 'no fault error description'

as for MAF sensor failure, its common in any application, not just pug HDi's
its design is its downfall

[teamster1975]

as for MAF sensor failure, its common in any application, not just pug HDi's
its design is its downfall

Thanks James, I was just curious really; not something I've had to touch on any of my fuel injected cars!

[FalconII]

Well just to update. Cleaned the egr valve as much as poss. replaced the selnoid for the egr and no different so changed it back and put the selnoid onto the turbo istead. turbo now working better. eg before it used to boost most of the time but not always. under normal driving...

I also filled the tank god £70 and still hadent stopped. LOL price of fuel. and put some FORTE desil cleaner in with the fuel. pick up and acceleration much better.

OK I also rewired the petentiomiter and MAF earth to there origional wires. seems better then on the fixed earth.

now it responds much better, but still slower then my mates W reg 110 HDI 406 estate. much slower.

it also still lights up a fault of clutch acuator high then cuts the turbo out as soon as the RPM reaches 3000 RPM. and it wont rev any higher. it only does it for about 1 min and it still does it if you stop the engine and restart. within the fault time. I am going to take the turbo off and see if i can borrow a HDI MAF to try it but its hard to find a willing dad who going to let me steal his for an hour. LOL.

Thanks for all the help so far. but I realy need to work out what is making the RPMs stick at 3000 the turbo works until the clutch high lights up it happens at completly rendom times eg hot cold warm; i have had it happen on a cold morning from starting up for a munite and not and after driving for 2 hours at motorway speeds.