Rough idle and cutting out at junctions help please

[Ryanstorie]

Hi I've recently bought a clio 172 and it is runnig rough on idle and the rev counter needle is hunting a bit I have and cutting out when you put ur at junctions or coming to a stop all the dash lights are appearing i have cleaned the throttle body map sensor and a couple other sensors changed the plugs but still the same can anyone help please cheers

 

[Brian]

Hi Ryanstorie, welcome to ClioSport!

 

[Ryanstorie]

Thanks lol will get it running right somehow lol

 

[zeta]

Is it a ph1 or 2?

 

[pearl172ph2]

Could be idle control valve. Mine has similar symptoms, havent ordered the part yet.

 

[Ryanstorie]

It's a ph2 and av tried idle control valve and had no change

 

[zeta]

Afaik a ph2 doesn't have an ICV due to the electronic TB? Any obvious air leaks around the head / plenum chamber

 

[mossyv6]

Clean the throttle body with carb cleaner

 

[Ryanstorie]

None at all its something really stupid I think it's in the garage just now but hes had no luck with it I am changing the crankshaft position sensor and map sensor tomorrow to see if I get any change

 

[Ryanstorie]

I cleaned throttle body as read that on an other post but no change mate

 

[zeta]

Did u re lubricate the butterfly valve too?

 

[Ryanstorie]

Yeah mate it's one of my mate that's doing it for me cause he's knows a bit about the clios as he had 172s as track car its frustrating like

 

[Ryanstorie]

Looked on other post seen a guy with same problem saying it was is lambda sensor could anyone confirm or think its worth £80 to try it

 

[Harko]

if it was a lambda you would have the engine management light on

 

[Ryanstorie]

Aw well looks like its something else now there ain't no lights on at all think a should have just bought a push bike lol

 

[zeta]

Similar thing happened to me and it was my alternator charge cable had snapped off the alternator

 

[VXR killer]

crank sensor would be your best bet, even getting it out and cleaning it may help

 

[Ryanstorie]

I have changed the crank sensor mate and changed the map sensor still running sh*t getting a compression test done tonight it's got ma mate baffled like

 

[VXR killer]

Where you get the crank sensor from?

 

[VXR killer]

Plugs, leads n coilpacks

 

[Ryanstorie]

Got the crank sensor from my work mate dingbro and tryed leads plugs and coil still no luck am chucking money at it and there is nothing changing

 

[VXR killer]

Have you had it on clip?

 

[VXR killer]

The thing with the crank sensor, renault changed the sensor due to faults with them which included a new loom/plug as there was different plug on the sensor. You check the loom/plug/ elctrical contacts?

 

[Ryanstorie]

Yeah mate and a got a sensor and a wee loom hing for it and not had it clio yet going into an renault specialist tomorrow with it so here's hoping he's as good with renault as he thinks lol

 

[Ryanstorie]

Just an update on car the variable valve pulley had collapsed and timing had jump lucky escape valves and that were fine thanks for the help cheers