yeah nice and easy you will find that if you turn on the air con idle will drop to approx 600 rpm. If you remove and clean the throttle body at the rear of the inlet manifold this will solve the problem.
Regards Johnny
UK Car Mechanic
renault technical expert
hello there .
thanks for getting back , the problem i have with 04 laguna is that at normal idle its around 900 rpm and can idle rough between 6 & 900rpm main dealer can find anything wrong car can actually shudder when at lights or similar
thanks for returning answer
the problem i have with 04 laguna pet is that it idles at 900 rpm and can vary roughly from 725 to 900 rpm at lights and similar air con cuts in normally.
thanks johnny
got car when 10 months old with 6k on clock now has 20 k have had rough idle from start can you tell me if renault had recall with this prob am trying to sell and its putting buyers of
johnny thanks for all replys
will try all procedures will let you know how goes
ps replaced coils and plugs and air intake manifold recently it was trial and eror with portlaos renault ,clip read showing no problems it seems the devil is in detail
again thanks for help.
hi johnny
tried all issues today i still have not got rid of miss at idle
could dirty injector cause prob.
it is a possiblity that an injector breaking down could slightly leak off into cylinder and give a poor idle. also remove the bolts from the coils and start the engine, observe when slowly lifting them out of each cylinder, if the coil archs from the body of the coil to the cylinder head there is a faullty coil. remove the plugs and recheck the gaps of the electrode ensure they are clean also check the porceline of the plug for tracks (black lines). get back if more assistance required