Knock / bang/ clunk need some help

[bruno55]

hello all i have a problem with my 2003 1.4 megane when i pull away hard i get a clunk it will only do it the once until i brake hard then i will get the clunk again so pull away hard clunk brake hard clunk just the once either way i have had it in the garage they have replaced both A arms and one top mount now they have not got a clue what it is all engine mounts look ok
any help please

[tomalamix]

hi there,

did you went to a renault dealer? i advise you to go to a non renault dealer and lift up your car. Under the car with a strong bar try to twist the engine and see from where is the noise coming from.

Typically the Renault technicians have formation dealing with standard problems, they usually doesnt go "off-shore", thats why im telling you to go somewhere else where they have a open mind to try different diagnostic techniques...the technique of changing everything and the client pays but the problem is still there shouldn't be used, but the dealers use it, its because it pays of as you unfortunately see.

Im sorry to any renault tech that reads this but its my experience, no one told me. Maybe its not your fault, youre just in some way obligated to work that way...

good luck

[Jammie667]

I have this exact same issue!

Any extra information would be brilliant!

[bruno55]

hi ya no i did not go to renault dealer
the clunking is driving me mad i have to make sure im not leaving a wheel behind me when i drive

[tomalamix]

did they tried to twist the engine with a strong bar? doing that and paying attention to the engine movements you can find almost every problems related with engine vibrations..

cheers

[bruno55]

hi ya yes i watched them as the pulled poked and proded at a number of things including the engine with some long bars. no noise was made until the car was driven out of the garage

[Jammie667]

@tomalamix - you sound like you've had this problem before? Do you remember what the cause was? Am getting slightly concerned that the engine is going to drop out or something equally ridiculous.

has anyone else had this problem and know of the remedy? Is it as simple as an engine mount? How many engine mounts are there?

[bruno55]

Jammie667 did you find out what the knock was or have you still got it ??

[tomalamix]

jammie,

i had some problems and using this kind of technics i was able to find out that an engine mount was wrecked. Besides that while driving the car i had some noises also, it was the suspension supports on the upper side. I had to change them both. My noises stopped when i changed that...

cheers