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Renault Megane 1.6 16v 2003 - Starts and then stalls #

Posted by Adam critchley on October 5, 2014, 2:15 pm

Year of Manufacture *: 2003
Engine Size and Code *: 1.6 16v
( Optional ) Scanner Used: Snap on modis

Hello guys

Any input on this would be great.

2003 (52) renault Megane 2 1.6 16v 85k on clock.
Complaint is starting and cutting out and poor running.

Says have to hold revs for a minute or so to stabilise it.

Not had it long. But it has got history with it.
It's had a cambelt and dephaser pulley
The cam actuator looks fairly new too.

Bloke has replaced throttle body and coolant temp sensor himself on advise from a Internet forum.

I've replaced his crank sensor as someone previously had just spade connector and hot glue to the sensor so replaced sensor and plug and a short section of wire.

Asked to carry out a full service and investigate so it's had a full service yesterday

No dtcs
After several hours of the car standing went to investigate reported fault it does play up
But looses comms with scan tool not just when stalling but when running rough too.

I've tried a known good map sensor with no change
Disconnected cam actuator still same

Tested for vacuum leak with brake cleaner with non found.

After 6/7 start stalls or poor running and then cutting out

Car idles high and then settles

Can view data then only thing that stood out was the short term fuel trims where really high negative numbers.

Anyone any input

Could it still be a dephaser fault even though theirs no noise or fault codes?

Re: Renault Megane 1.6 start stall

Posted by Tony Ludford <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT5539' width='330' height='300' border=0 style='border:none;'> on October 5, 2014, 8:02 pm, in reply to "Renault Megane 1.6 start stall "
Tony Ludford

If the bloke's fitted a new throttle body? Does it need adapting? Or is it an "internet special" one?
I've had a replacement one (for a clio) from ATP, fault still evident, sent it back to be told no fault found. Fitted a new one, and bingo, cold idle fault fixed....

Re: Renault Megane 1.6 start stall

Posted by Adam critchley <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3657' width='330' height='300' border=0 style='border:none;'> on October 5, 2014, 8:30 pm, in reply to "Re: Renault Megane 1.6 start stall "
Adam Critchley

Hi its a genuine throttle

Second hand I believe but looks clean
I reset the adaptions and operated throttle via scan tool

No specific option for re adapting the throttle though.

Re: Renault Megane 1.6 start stall

Posted by Neil Mellor <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT2785' width='330' height='300' border=0 style='border:none;'> on October 6, 2014, 8:51 am, in reply to "Renault Megane 1.6 start stall "
Neil Mellor

The symptoms you have do point towards a dephaser type fault.
Maybe fit/set incorrectly.

Can you get it read with a Renault Clip as they usually give corresponding fault codes

Re: Renault Megane 1.6 start stall

Posted by Alan Lange <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3293' width='330' height='300' border=0 style='border:none;'> on October 6, 2014, 9:29 pm, in reply to "Re: Renault Megane 1.6 start stall "
Alan Lange

Hello Adam, I'd agree with Neil. Remove cambelt & turn dephaser unit back & forward until it locks in the set position then check timing. Another thing these engines suffer with is the pencil type coils. Often these don't throw a fault code & the best way I've found to diagnose is a bit crude. I disconnect each coil in turn on idle, usually 1 or 2 will slow the engine speed, the others will cut it. I still haven't worked out why (as they are def. all firing & I can't see how they can fire at the wrong time?)

Re: Renault Megane 1.6 start stall

Posted by Craig Thompson <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3722' width='330' height='300' border=0 style='border:none;'> on October 7, 2014, 9:14 pm, in reply to "Re: Renault Megane 1.6 start stall "

I have a similar fault on a scenic, only code relating to dephaser, replaced belt and dephaser using correct locking tools, engine wouldn't start, refitted old dephaser engine started with original faults got a new dephaser and fitted same again no start, scoped actuator looks ok but don't have a known good sample, cross checked part numbers. I've had to put the job on the back burner for now but will post if I come across anything.

Re: Renault Megane 1.6 start stall

Posted by Ian Slattery <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1196' width='330' height='300' border=0 style='border:none;'> on October 7, 2014, 10:16 pm, in reply to "Re: Renault Megane 1.6 start stall "
Ian Slattery

Where are the dephaser's from. If genuine ignore this question?

Its just i looked at a scenic that had a problem with a cam sensor fault ever since a new dephaser was fitted from ecp.

A genuine dephaser fixed it.

Regards Ian.

Re: Renault Megane 1.6 start stall

Posted by Craig Thompson <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3722' width='330' height='300' border=0 style='border:none;'> on October 8, 2014, 8:43 pm, in reply to "Re: Renault Megane 1.6 start stall "

I'm sure it was febi from TMS will double check tomorrow

Re: Renault Megane 1.6 start stall

Posted by Craig Thompson <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3722' width='330' height='300' border=0 style='border:none;'> on October 15, 2014, 11:19 am, in reply to "Re: Renault Megane 1.6 start stall "

febi Part No 36415, was also on to febi technical who ensured be that it was the correct part.

Re: Renault Megane 1.6 start stall

Posted by Jarred Toms on December 17, 2014, 7:57 pm, in reply to "Re: Renault Megane 1.6 start stall "
Edited by board administrator December 18, 2014, 7:11 am

If its had a new dephaser then the injection ecu will need reprogramming at a renault dealer, if they are not programmed they act in the exact way you have described.

Re: Renault Megane 1.6 start stall

Posted by Glen Strachan <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on December 23, 2014, 9:35 am, in reply to "Re: Renault Megane 1.6 start stall "

I dont recall having to reprogram after fitting dephaser
As long as the new one has had the little lug 'clicked' into place and the correct timing tools are used it should be fine.

Have you had a vacuum gauge on it to see what manifold depression you have ?

Re: Renault Megane 1.6 start stall

Posted by Steve Harrison <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1363' width='330' height='300' border=0 style='border:none;'> on December 24, 2014, 7:44 am, in reply to "Re: Renault Megane 1.6 start stall "
Stephen Harrison

They are meant to be updated after fitment although I have seen some that have not and run OK.

Of course they don't have to go to the dealers as many independents can do the update.

Steve

Re: Renault Megane 1.6 start stall

Posted by Jarred Toms <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3794' width='330' height='300' border=0 style='border:none;'> on December 29, 2014, 9:56 pm, in reply to "Re: Renault Megane 1.6 start stall "

Make sure the throttle body is cleaned throughly aswell.

Re: Renault Megane 1.6 start stall

Posted by Alan Lange <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3293' width='330' height='300' border=0 style='border:none;'> on January 4, 2015, 8:01 pm, in reply to "Re: Renault Megane 1.6 start stall "
Alan Lange

If anyone's interested I worked out my earlier question a couple of days ago on a kangoo. If you disconnect one coil the ecu shuts down the driver to the other coil in the pair (ie 1+4 or 2+3) so if you disconnect one of the good coils the engine will try to run on one cylinder, if you disconnect the faulty coil or its pair the engine will run on two cylinders. (Probably bad practice though!)

Re: Renault Megane 1.6 start stall

Posted by Nick Favell <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3407' width='330' height='300' border=0 style='border:none;'> on January 7, 2015, 5:39 pm, in reply to "Re: Renault Megane 1.6 start stall "
Nicholas Favell

Undo the bolts that hold the coils in place, lift up each coil individually with the engine running.

When you lift the faulty coil the engine note will not change. When you lift a good coil the engine note will alter and you can hear the spark tracking to earth.

I use insulated pliers for this. At first I was a bit concerned of potential damage to the ECU but in over 10 years of doing this never had a problem.

Nick

Re: Renault Megane 1.6 start stall

Posted by Lee Mackintosh <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1348' width='330' height='300' border=0 style='border:none;'> on January 7, 2015, 10:37 pm, in reply to "Re: Renault Megane 1.6 start stall "
Lee Mackintosh

Exactly the same as I do except don't bother with the pliers, just lift coik pack up by hand on the multiplug part.

Re: Renault Megane 1.6 16v 2003 - Starts and then stalls #

Posted by Francis Bennett <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3809' width='330' height='300' border=0 style='border:none;'> on January 9, 2015, 9:13 pm, in reply to "Renault Megane 1.6 16v 2003 - Starts and then stalls #"
Francis Bennett

might sound like a stupid question but is it worse when cold?

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