Can you find the stepper motor?

mugatea · Unread post by **mugatea** » 14 Dec 2006, 16:19

I'm sure something is wrong with the stepper motor. I've heard people saying it can be cleaned and that can restore it.

I want to do this but need help finding it. Haynes manual is useless to be frank.

Here's a pic can someone point it out?

BTW, It's a 1.4i xsara

Thanks

Jamie

citronut · Unread post by **citronut** » 14 Dec 2006, 18:31

i think its F12 if not its C12 but i think C12 is the cold start suplimentery air supply unit,this can be cleaned by removing it and give it a blast with carb cleaner
regards malcolm

wheeler · Unread post by **wheeler** » 14 Dec 2006, 19:34

It's C 12

KevMayer · Unread post by **KevMayer** » 14 Dec 2006, 20:30

Battleships with engine parts.

I'll try A1 and take out the brakes.

cheers Kev.

Clever idea though. I can't help but smile at that one.

mugatea · Unread post by **mugatea** » 14 Dec 2006, 23:31

thanks guys

slim123 · Unread post by **slim123** » 15 Dec 2006, 08:37

Def C12, but I doubt if it needs changing! Try removing it and giving it a good clean up using carb cleaner, these things are normally only carboned up and sticking.

Worth a clean, before a change.

Regards
Slim

mugatea · Unread post by **mugatea** » 15 Dec 2006, 15:48

Yes it was c12. It was dirty and sticky so I cleaned it good with carbon cleaner. But sadly there is no real difference.

I wanna state the symptons and see what you guys think.

The car seems to rev high and I have to be accelarating over 50 to use 5th gear.

30-40 mph seems a bit slow for 4th

It's jerky and defo doesnt like being at low revs.

If I'm in 1st or 2nd and not using the accelarator it will speed up then slow down and speed up etc.

The accelarator is real sensitive, just touching it sends up the revs

When depressing the clutch to change gears there's a jump up in the revs.

some eratic idling.

The problems tend to arise once the car is warmed up rather than cold.

thanks

jamie

slim123 · Unread post by **slim123** » 15 Dec 2006, 17:51

Jamie, did you also clean out the hole where it goes? This also gets gummed up, whilst you are under the bonnet with the carb cleaner in hand it is a good idea to take off the inlet from the throttle body (D/E 13) and give the insides of the throttle body a realy good clean, also the pipes (H16, J14, H11) could allways benifit from a clean up through the insides.

Regards
Slim

mugatea · Unread post by **mugatea** » 15 Dec 2006, 17:55

ok, I'll try that tomorow. I did clean the bit where the stepper motor went. It was dirty too.

I'll use carb cleaner to clean the hose's yeah?

thanks
Jamie

citronut · Unread post by **citronut** » 15 Dec 2006, 19:16

i did not mean carbon cleaner what i ment by carb cleaner is carbureter cleaner,as this is a very strong solvent,also i think that C12 is the cold start auxilary air supply valve,in wich case it dose benafit from a good clean with the said carb cleaner,but your prob sounds like an air leak in the induction somewhere,maybe a vaccum pipe,i had very similar simptons with my CX2,5tri AUTO harsh surging at junctions and if i knock it out of gear thje revs would shoot up,i found a vaccum pipe split
regards malcolm

deian · Unread post by **deian** » 15 Dec 2006, 22:39

what i you are refering to in C12 is the idle control valve, so it idles high? check the connections to the idle control valve too... it's not a sticking throttle cable is it?

mugatea · Unread post by **mugatea** » 16 Dec 2006, 15:51

carbureter cleaner is what I've got. I think the throttle is ok. I'll check for spit hoses.

ps what pipes are the vacuum pipes?

Thanks guys

Jamie

citronut · Unread post by **citronut** » 16 Dec 2006, 16:37

all pipes and air duckting going to and from the induction/air intake and inlet manifold
regards malcolm

mugatea · Unread post by **mugatea** » 17 Dec 2006, 15:32

well I checked and all seems fine. I'll guess I'll have to take it somewhere when I can find the money. The probs arent really noticable until the car has warmed up.

Hopefull I can get it fixed.

thanks for your help

Jamie

citronut · Unread post by **citronut** » 17 Dec 2006, 19:08

try spaying carb cleaner all around the inlet manifold and any vaccum pipes and duckting you can find,with the engine running,if it picks up you know thats the point of the vaccum leak
regards malcolm