my car idle funny

[makis406]

hi i have this small problem:https://www.youtube.com/watch?v=6OpNWQmMDmg
i check the altenator is ok i check the batery is ok i the stelper motor is new (one year ago) any segestions?
Sorry about my english is no my langruge

[406Break]

Grounding problem? Get some jumper cables and try to give engine better ground(battery negative)

[steve_earwig]

Are you touching the throttle pedal during this video? I am unsure if the problem is the engine speed changing or the fluctuation in voltage. Or perhaps both?

Sorry about my english is no my langruge

It isn't so bad, much better than my Greek would ever be. And you could have used Google translate

[makis406]

[quote="steve_earwig"]Are you touching the throttle pedal during this video? I am unsure if the problem is the engine speed changing or the fluctuation in voltage. Or perhaps both?

Yes i am touching the throttle pedal and the fluctuation in voltage
stops .

[steve_earwig]

So the problem is the voltage fluctuating at idle? I think that all your lights are doing this, not just the door lights. Where is the meter connected, on the battery? The readings look fairly normal but this is the problem with digital multimeters, they don't react quickly enough to show you anything useful (you would not be able to read them if they did) so in this case I believe the flickering light, more than the meter.

It's difficult to tell from here, it could be a bad connection but this seems unlikely given that it only does it at idle. Maybe your generator is dying?

[makis406]

The meter is connected to the door plug . No only the lights on the doors is flickering, maybe a dirty or falty MAP?

[steve_earwig]

Oh. If the only fault is the door light flickering then it has nothing to do with your engine. May be it's a bad connection in the lock switch.

[lozz]

Flickering lights can be linked to an iffy alternator.
Battery volts & charging volts may test good but ..a diode going down can cause the flicker..

The diodes act like a voltage regulator.

[makis406]

Hi i change the map sensor and the problem is now gone .
I check the morning whit a cold start and i let you now.

[steve_earwig]

[makis406]

Bad news the problem is back. I run out of ideas .