stepper clean

[gRoberts]

Mine runs at around 85-90. It's crept up to 95-100 and i've not heard anything. When I've turned the aircon on, you can hear the fans kick in.

On quite a few cars, I've noticed the fans kick in earlier and also continue to go after you've turned the engine off. Do the 406's not do this?

[kevtherev]

Hmm I thought the 1.8 only had the one fan...

In any case, 95c is about where it should kick in at low speed (barely audible from inside the car), and that should be able to hold the temperature steady around 90-95c on any 406 engine. When it hits around 100-105c the fans should kick into full speed mode, which you WILL hear and feel. It's enough to dim the lights!

I suggest keeping an eye on the gauge next time, see how close to 100 it gets.

last night in a bit of stop go traffic guage up to 90. gets home and back down to 80 so i thought i will leave it idling and watch to see if the fans come on. they came on at nearly 95... nice
like you say mjb they were barely audible above the tick over of the engine ,but were defo going round and there is defo 2 smaller fans as apposed to 1 large fan, also the guage has never gone above 95 so never felt the 2nd speed kick in.
it all seems to be fine and i am stressing over nothing ,you just get used to what ya old car does then change to a different one and it does things different my original concern was the speed of the temp rise bt my old car was running a constant 90 while the 406 runs at 70c
will try the aircon again coz it didn't seem any colder than the normal cold air.

MOD EDIT: Fixed the quoting

[sirwiggum]

Stepper Motor on my 99 1.8i Xantia was a Magnetti Marelli, just on the air intake.

Was a nightmare to get off. Those Torx screws are easy to round off. Ended up just near enough hammering a flathead into where the Torx hole was, and getting it to turn. Replace with normal screws.

Used carb cleaner on the stepper, then put it on, took the airbox off, started engine, revved by hand while spraying air intake cleaner.
Spluttered a bit, which was worrying, and could see blueish smoke from exhaust while doing it.

But after that, it idled perfectly.

[kevtherev]

4days after cleaning the stepper mine had a little session hunting round the 1500 2000 mark .it was the day after takin it up the motorway . i did give it some got home switched off . went out 10mins later all fine and has been since ( 3 days) thinking it was just settling down ( i hope )
dont really fancy sprayin stuff directly into the air intake. to my way of thinking it should intake air not liquids

[sirwiggum]

4days after cleaning the stepper mine had a little session hunting round the 1500 2000 mark .it was the day after takin it up the motorway . i did give it some got home switched off . went out 10mins later all fine and has been since ( 3 days) thinking it was just settling down ( i hope )
dont really fancy sprayin stuff directly into the air intake. to my way of thinking it should intake air not liquids

It scared me too when I sprayed it in and the engine started stalling
But it survived. I was working on the theory that they wouldn't sell an air intake cleaner telling you to spray into the air intake if it wasn't safe...
Although I can be too trusting sometimes too
Though if anything does happen, i'm not taking the blame!