Megane starting woes

[Markvanbasten]

Hi guys,help needed ,my shed a Renault Megane mk11 has decided to play up,it will start run for few seconds then surrender,called rac out he said it showed a fault with cam and crank sensors so duly replaced them to no avail,changed the map sensor but still same,was advised to change plugs and coil pack which I have done,but still the same issue,does anyone have any suggestions?its 55plate 1.6 up until this point it was running fine but it’s seriously doing my box in now,any help would be appreciated,thank you

[chammyman]

Just keep firing the parts cannon at it, seems to be the way you want to go...

Or diagnose it correctly.

To do that you need live data which I can only assume you don't have access to.

[Markvanbasten]

Cheers pal,no I don’t have live data,next step is hook it up to diagnostics machine,I appreciate where your coming from however due to work commitments ,money tree been felled,I’m going down old route ,hoping some poor soul who’s been in same situation with me could shed some light on my predicament,sarcasm is more than welcome but I’d appreciated helpful comments.......... if it helps when I start it the revs die unless I rev it but if I tickle the loud pedal the Revs hunt up and down more than a wes knickers.......

[GreenV8S]

Markvanbasten said:

money tree been felled

Markvanbasten said:

cam and crank sensors ... map sensor ... plugs and coil pack

I appreciate it's no fun to pay garage bills, especially when money is tight, but I believe that having a competent professional diagnose and fix the actual problem would have worked out cheaper than throwing all those new parts at it, and the problem would also no longer be doing your head in.

[littlebasher]

Be the dephaser pulley i expect, very common on that engine

[bmwmike]

+1 on dephaser. Often will have a grinding noise when it fires up eventually, just for a split second.

[Markvanbasten]

Hi,re phaser pulley, no grinding noise!