megane stalls on start up

[mfc15]

hi my megane (1.4 03) stalls on start up unless i rev it for about 10 seconds, anyone know why?
cheers

[markren2004]

start with cleaning out the throttle body/butterfly with carb cleaner

[harny86]

hi mate my 2003 model does this if its cold i have to rev how do i do the cleaning mate?

[davelowe]

Remove the throttle body. Spray inside with carb cleaner. Wipe. Repeat until spotless.

The problem usually occurs because the butterfly valve that is electronically operated either a) sticks, or b) positions itself in the idle position, but crap stops air from getting through.

Don't get carb cleaner on anything painted or plastic.

[harny86]

hi dave thanks for the reply dont mean to sound daft mate but whats a thottle body?mine only does it when cold.thanks again shaun

[markren2004]

hi dave thanks for the reply dont mean to sound daft mate but whats a thottle body?mine only does it when cold.thanks again shaun

you dont say which engine it is. the throttle body is part of the air intake after the air filter, it's where the air intake tube connects towards the engine, check the online manuals in the sticky at the top of the thread list for pictures etc.
it it's a 1.6 and there is a rattling noise on cold startups then its the dephaser issue.

[harny86]

hi yea its the 1.6 but theres no rattling mate

[harny86]

had my car at renault today they said it was tdc sensor and want 100 pound to fix is this a good price?

[markren2004]

had my car at renault today they said it was tdc sensor and want 100 pound to fix is this a good price?

not bad...part is over £50,if it's the newer blue plug version.

[harny86]

got it done today a long with the wiring loom in the drivers door as window was not working and when i got on the motor way the service and airbag light came on.Totally sick any ideas?

[markren2004]

loose connector under drivers seat next to the slider rail.

[harny86]

yea i thought that mate but it seems fine,it went off but come straight back on just been for a little drive there and it was off so fingers crossed mate.

loose connector under drivers seat next to the slider rail.

[john10001]

yea i thought that mate but it seems fine,it went off but come straight back on just been for a little drive there and it was off so fingers crossed mate.

loose connector under drivers seat next to the slider rail.

If its not the connector under the seat its likely to be the airbag spool. If your steeling wheel makes any sort of clicking noise when you're turning it then it could be that.

[john10001]

had my car at renault today they said it was tdc sensor and want 100 pound to fix is this a good price?

If anyone else has the same problem don't assume it is TDC sensor or throttle housing as it could also be Camshaft sensor which is more likely. When my TDC sensor went the car died completely. It was caput and I had to get it recovered.

The Camshaft sensor causes problems trying to started and it can also drain your battery when its knackered but you can after many attempts and much praying eventually get it started. You have to rev it for a big to allow the engine to get warm. Switching off the AC is a good idea because it could immediately stall again having to also power compressor straight away.

When my Camshaft sensor had gone I could still drive places but there was a danger of it stalling so I had to constantly keep reving it up especially when stationary so it didn't stall. I usually had it around 1500 rpm while stationary. I didn't dare go much lower than that. It was a compromise from annoying to many other motorists and stalling and trying to get it going again which could be quite embarassing depending on where it happens.