Stalling symphony

Hi all, has anyone else had trouble with stalling all the time when warm? The van starts and runs ok when its cold. It started about a week ago and is still playing up despite me "wiggling" all the connections to the sensors. Ive checked the air hoses for splits but not found any yet. Has anyone any ideas before I take it to a main stealer out of frustration? Alski.

Probably a good idea to say what year it is, and give some more info on what type of engine. But I would guess a sensor failure somewhere.

If it's recent enough to have its ECU codes read, I'd get that done - shouldn't need to get ripped off at a dealers for that - you might even find someone mobile who would come to you to do it for not a huge amount.

If it's petrol, I have an idea what it might be, if it's diesel then I've no idea
As Mojo says, we need more details.

Frank

Yes sorry, more details would be extremely helpful. Its a 1999 2.0 litre petrol. Thanks Alski

In that case it could well be the idle stepper motor. It's on the inlet manifold, you can't quite see it on the photo, it's just below the black plate indicated by the arrow. The thing with "X" on it is the stepper motor. it's held on with two small torx headed screws.

I got mine from a breakers yard, it wasn't off a Boxer. the guy there used to work for Peugeot and said that the official line was that the motors for different engines/cars were not interchangeable but in practice, the ECU "learns" that it has a new motor and adapts it's settings to suit.
I swapped mine there and then in the breakers yard. The idle went up and down a few time then settled to it's normal speed. Like the man said

HTH
Frank

Thanks Frank I will have a look later as my fingers are numb from the cold now. I started the engine and it ran ok then when it was warm and idlling the revs go up and down a few hundred all the time like it cant settle. I willl have a go tomorrow, lets hope its not too frosty! Thanks again will let you know how I get on .

Alski wrote:I started the engine and it ran ok then when it was warm and idlling the revs go up and down a few hundred all the time like it cant settle.

Mine was like that, sometimes it would idle OK and sometimes it would not, I had to keep my foot on the accelerator at traffic lights & junctions to keep the motor from stopping. The "new" motor fixed it.

Frank

Hi Frank, just ordered one from e-bay £10. I will let you know how it goes . Cheers

Alski wrote:Hi Frank, just ordered one from e-bay £10. I will let you know how it goes . Cheers

Nip out now and spray some penetrating oil on the screws then it can be soaking in. Mine were tight!

Frank

My 1995 2.0l Petrol Boxer suffered a first year failure of the crankshaft speed sensor which resulted in a similar inability to idle, but that was under all conditions, warm or cold. To get home I overcame this by advancing the idle speed by relocating the clip further up the end of the throttle cable to keep the cable under permanent tension. The dealer then fixed the sensor under warranty - one of the few things they did correctly!

I also had vacuum pipes split as you suggest, generally at the connection to sensors immediately behind the front grille where they're bloomin' difficult to see.

BTW what a beautifully clean engine bay you have Frank! Mine was filthy and corroded to hell by the time I swapped it.

Bartfarst

Hi,

Try this before buying anything else,
Get vehicle to normal operating temp
Drive in 1st gear until 3000 rpm then change into 2nd gear and drive until 3000 rpm
then change into 3rd gear and drive until 3000rpm, then change into 4th gear until 3000 rpm
finally and maybe most difficult change into 5th gear and drive until 3000 rpm.
this is the correct way of resetting the ECU to correct running and idle settings, you will need a fairly long quite road.
When I was Consultant engineer for Peugeot France this is what was taught to all Peugeot technicians and it worked in most cases I wont say all cases as other things can be faulty however idle control can lose its intialisation over time by the way the vehicle is driven and vehicles driven hard will keep their intialisation better.
Hope it works for you.
Regards
John Dean ( retired Peugeot technical / legal consultant engineer )

Hi John,
That's very useful to know Ain't got a revcounter though. The only one I have is on an old Gunson multimeter and that takes a pulse from the points (which the boxer doesn't have)

Frank

Hi,

I would have just revved to more than 3000 rpm by guess work it only needs to know full accellerator movement at full power to reset it just finding a road to do it and watching your speed.
john

Thanks for the info John, your experience with these vehicles I am sure is valued by our members

Hi Frank, fitted new stepper motor (yes screws were tight, soaking helped) started her up and it revved high and low for a minute now its settled and is fine . Thanks for all the advice to all who replied. To sort it for a tenner on e-bay is a result! Thanks again to all from one happt camper Alan.

Glad you got it sorted

Frank

hi,
my van is a 2000 petrol and I have the same IDL speed problem. e bay prices are from 15 to 65 quid. the main dealer says there are two types,one is 140 and the other is 85 quid. I think he's looking at the wrong bit. how much did everyone else pay please,
chris

15quid IIRC from the local scrapyard (sorry! vehicle breakers) mine wasn't off a Boxer, it was off a car, but I don't know which one. As I said previously, the guy reckoned that the ECU would "learn" that it had a new motor and adapt itself to suit. It did so in my case.

If possible, remove yours and take it to the breakers for comparison.

Frank

hi,
my stepper is made by Philips for pierburg and has two numbers when you get it off. Peugeot agent knows nothing about this so possibly its a one off repair done in the past or they were bought in when factory stocks ran out. I can get 1000 from China but I have found a place in west brom who stocks similar items so I'll nip in on monday. running with throttle cable tightened at the most.

chris

hi,
just like to say thanks to John Dean for identifying what my stepper motor should be, will be picking one up and fitting on Monday as we are off to the moonshine lake festival tomorrow,
regards,

chris

hi,
fitted new stepper and set it up, OK for a while but now cutting out when hot, seems slow on ldle as well, will check further when I can but if anyone has any ideas they'd be welcome.
does anybody know of a good commercial van garage in the derby/Burton area as I need wheel bearings doing and local Peugeot garages failed to impress last time,
regards,
chris

chrisvesey wrote:hi,
fitted new stepper and set it up,

Don't understand what you mean by setting it up Chris, I just screwed mine on and plugged it in.

OK for a while but now cutting out when hot, seems slow on ldle as well, will check further when I can but if anyone has any ideas they'd be welcome.

Cutting out when hot is one symptom of coil failure, don't know how you'd test for that though unless by substitution.
I've always thought that the idle was too high on mine,but as it's controlled by the ECU, there's nothing I could do about it.

Frank

hi,
screwed it on then did the 3000rpm bit. it only cuts out on idle and even then not always. Rickover usually about 750 rpm but now sometimes drops to 500. think I'm only getting a partial signal so will recheck leads and sensors, oh well, happy days,
chris

Just a quick reply
Wants to be about 950 rpm when hot
Try getting vehicle as hot as possible thermostat open then do tyhe 3000rpm test.
do make sure all air pipes to throttle body are clean inside and tight.
remember more air passing stepper motor higher the revs.

John Dean

I hate to say this, now that you've shelled out for a new stepper motor, but have you checked your plugs?
I had an instance where the prob returned months after I changed mine. It turned out to be No 1 (or No 4 according to Pug) plug "well" was half full of rain water which had found it's way past the plug lead seal thingy. (Crack in the plastic scuttle gutter)
Soaked it out with a rag, dried everything off and it was fine again. Needless to say, I replaced the plug leads ASAP.

Frank