starting problem

[xjodiex]

my megane cc 55 plate has had a few problems with starting once i have enterted the card and press start it takes my car a few seconds longer 2 start ...like it is hesatating it always start's but sounds like it just about makes it this does not happen every time but has become more often it has done this for about 6 month but the fuel fillter light came on a few weeks ago and also a cliking sound when using the accelarater this would stop at lights e.t.c and when car was not moving now my local garage put it on the machine and it came up my crackshaft sensor this was replaced and after driving 1 mile the light was back on and the noise and starting prob still there i took it back and since they have replaced the timing belt with the full kit the defasor pulley , they have tried the camshaft sensor and the crankshaft sensor and tried a set of coils the noise in the engine has stopped and the fuel fillter light is off but the starting problem is still there any 1 have any idea what the hell this could be please let some 1 have a answer iam totally sick jodie xxxxx

[Paul79]

Sounds indenticle to my problems!

I hope somebody finds a solution.

[AlexB]

xjx,

You wrote in a different forum:
"my fuel fillter warning light came on last week after the car has been sometimes misfiring and making a strage clicking sound from the engine which stops after ive took my foot off the accelorater for a few month i took it to my garage that said after the computer check it was my camshaft sensor then i recived a phone call saying they had replaced it and it is not that that it is now my timing belt (car has done 51000 miles ) had this done and suprise suprise it is still doing the same thing after paying £300 i drove the car half a mile and the warning light is back on iam back a the garage tomorrow because they think it may be 1 off the pulley's please help"

What I've understood from this collection of words is that your garage is maliciously incompetent. Don't use them and, if you enjoy this kind of stuff, sue them for doing unnecessary jobs.

Take your car to a good garage. After being serviced/repaired by monkeys many things may need to be done again. Ask them to clean the throttle body and check the starter revs (the battery is suspect). Then, the dephaser control loop and fuelling must be checked. It is a simple engine -- an expert will fix it easily.

[xjodiex]

hi alex thanks 4 the advice i have two diffrent forums so i have wrote in this one twice sorry !! i am taking the car back 2 the garage on sat i will let the garage now about the information i have collected cleaning the throttle body has came up a few times also checking all the connections etc it is a well known garage in my area they have even had the car to the local renault garage to go on there dianostic's machine they sugested it was the defasior pulley this did solve the noise problem from the engine but not the delayed starting problem and coverd all those costs ive so far paid £300 and refuse 2 pay anymore there sick to death of me at this garage i want my car sorted then i will look elsewhere and find another garage thanks for the advice jodie x

[AlexB]

Bosch garages tend to be reasonable and have the necessary equipment -- see the website of Bosch for the nearest garage.

[xjodiex]

still having this starting problem with my megane had it to 4 diffrent garages inc a renault garage no 1 knows what wrong and i have had all coils and sensers changed and have basically been told when the engine light comes on 2 take it back had this problem over a year now and no lights have came back on after my defasor pulley and belt were changed last april but this morning as i went out 2 start it an aa repair man was fixing a freinds car he commented on my car taking ages 2 fire up then the smell of petrol after it did start he said something about the petrol not getting in 2 the engine / overflowing ? does any 1 agree that my problems could be connected iam at my wits end now !!!!!!!!

[davelowe]

Sounds like its being flooded. Why, I have no idea. I own a diesel. I haven't come across this problem since the days of carburettors and chokes (such as Maxis etc).

[xjodiex]

thanks iam convinced its something 2 do with fual etc ,its a nightmare it runs sound except this problem another trip 2 the garage soon i supose ive lived with it over a year a few more weeks wont make a diffrence !!

[AlexB]

Have you been to a Bosch garage as I suggested?

[davelowe]

Have you been to a Bosch garage as I suggested?

The odds on that are..... small!

[xjodiex]

yes i did north jesmond garage which is a "bosch" garage again didnt have a clue changed a few sensors and coils etc no futher forward along with the renault garage who tried 2 charge me £45 for a test that DIDNT tell me what was wrong idiots !!!!! AND ANOTHER 2 GARAGES FROM THE GOOD GARAGE SCHEME !!!!!!!!!!!!!!!

[davelowe]

Notes: this may not be applicable to the CC model - I have no idea.

I know you have said that the sensors have all been changed, but I'm thinking along the lines of the catalytic converter and sensors surrounding that (rather than cam/crankshaft).

I quote from the Haynes manual "An oxygen sensor in the exhaust system provides the [ECU] with constant feedback - 'closed loop' control - which enables it to adjust the mixture to provide the best possible operating conditions for the catalytic converter. A further sensor is fitted, downstream of the converter, to monitor the converter's operation, and this provides an even finer degree of emissions control.".

Have you had these sensors replaced and the associated wiring checked for corrosion, splits, chafe marks, shorts, etc? Does it pass the emissions test with the fault code showing?

The mentioned sensors are shown on pages 65 and 817 of the online manual MR364MEGANE1.pdf as is other information regarding the system (elsewhere). See also pages 833 and 834 et seq.

For them to have changed this sensor the car would be up on a ramp most likely.

Any further information regarding what specifically has been checked would be useful.

[AlexB]

The O2 sensors need time to warm up. It's an open loop while starting. It is strange that OBD does not show anything. Those who were looking at the screen might have missed something. I am assuming that the "good" garages have checked the obvious things, there are no leaks, the throttle body is clean, the coils/spark plugs are good, ignition is checked, all spark plugs are of the normal colour, the oil/filters are new, the starter motor gives the rated rpm.

xjodiex, can you post here the diagrams of the engine parameters? The problem can be as simple as a temperature sensor playing up. If nothing is found, the next will be compression check.

[xjodiex]

thanks for ur info guys what and how do i find out about the parameter's? i will pass all this info on 2 the garage and let u know the outcome thanks again .

[xjodiex]

iam going 2 go back 2 the bosch garage as i know a few people have recommended these garages .