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post #2 of (permalink) Old 22nd October 2013
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Re: laguna II brakes problem

Originally Posted by burnout View Post
i apologise in advance as this could be the first post of many , and they'll probably all be long winded, my first problem is this:

my 03 plate 1.8 petrol laguna has been driving terrible lately, feels like i'm driving with the brakes on, last couple of weeks it's got worse. start driving and the car almost comes to a halt, then shoots forward as if (in my son's words) i'm using boost on a racing game , and keeps doing this. while it's doing this the brake pedal is rock hard. i thought it may be a vacuum leak, so sprayed carb cleaner around all vacuum pipes , inlet manifold etc, but nothing. last week or so i've noticed a hissing noise coming from the servo area under the dash, sometimes when i press the brake pedal, sometimes when i release the brake pedal and sometimes when i'm just driving along. i suspected the servo, but a mate who's a mechanic said .. it's not the servo, it's the master cylinder. i've got a replacement servo and master cylinder, but need to know which one it's likely to be , as the servo seems to be a MUCH bigger job. hence why i asked for a renault mechanic. according to the haynes manual, i remove the master cylinder and the heater blower motor, and then remove the two screws holding the servo (piece of ****, right?) but in reality i can remove the bottom servo bolt, but the top one is behind the air con and completely inaccessible without stripping out the dashboard and most of the front end. is there an easier way to do this, or is mr haynes ****ing himself laughing at my expense?

thanks for reading
Seeming master cylinder is the easiest, and most likely, try that first.

Servos very rarely go wrong.
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