250 Cutting out on cold starts

I had this, but did it all the time, changed the air inlet temperature sensor and it stopped doing it.

 

Try plugging the car in for fault codes

 

Mines doing this now and again also

 

Its at the front off the engine, in the intercooler pipework, little red sensor. I originally used the part number and bought a pattern part of ebay, grey and slightly different from the red one but it worked. But recently bought a renault one to fit, £8 from renault (same price as ebay). But be careful though as there a note on the system about needing a new loom to go with it, which is £40 odd. Bought the just the sensor and it is the same as the original, so loom not needed.

 

I very much doubt it's fuel, more one of the many bad traits the megane has.

I'm sure most owners on here would of had it before, along with lumpy idle on start up.

Only had my meg a few months and one thing I've learnt is little faults like this come and go as they please.

 

Mines doing this, was it the fuel as I also use Tesco?

 

Try changing fuels, if it carry on, try the air temp sensor from renault only £8, sorted it for mine.

 

Got a part number?

 

Or a link?

 

8200415410R

 

Nice, ordered from Renault for £8.41. Thanks!

 

You got a picture of where it is in the engine bay? Or a description?

 

Pull the engine over off, right in front of the engine theres a plastic pipe that goes to the throttle body, it right in the middle of that, a red/orange looking sensor, cant miss it.

 

Thanks man!

 

Just picked this up from Renault: https://imgur.com/53FzIB0
That look correct?

 

Yeh thats the one.

 

otherwise if the problem persists clean the MAF, MAP sensors and Throttle boddy. Cleaning those cured it for me and few more people.

 

Where are the MAF and MAP sensors? I'll give them a clean.

 

Yours sorted now then?

 

yes there is another thread on here that i went in depth about the cleaning of sensors and TB. Quite recent.

 

No maf sensors, there two maps sensors, one in the same pipework as the air temp sensor, and one in the inlet manifold. Cant miss them.

 

Just clean the terminals?

 

No inside the sensor tip with carb cleaner, and leave it for the access cleaner to evapourate. The one sensor gets oiled up. Cant remember wich one thou.

 

Will brake cleaner do?

 

Does it evapourate afterwards?

 

It's supposed to yes

 

Should be alright then

 

Anyone got a picture of the two MAP sensors so I don't get it wrong?

 

Google it

 

I have, I couldn't find anything!

 

Looks similar to that

 

The first one is easy to see but the one I'm the manifold I couldn't see.

 

These

 

What a blind bastard I am. Thank you!

 

yep sorted, just make sure to clean the TB it was filthy for a car with 50 000km too much granny driving by older owner i guess.

 

is that your engine bay? i notice a different engine mount and battery were these changes done by you?

 

Cleaned them both yesterday, the one in the manifold was filfy! Other was wanting but cleaned it anyway. Seems to be better now. Is the throttle body easy to remove in this car?