Question about 2000 Renault 181
Whilst driving a hissing sound can be heard from the brake pedal. Like air escaping. During idling, the revs are higher until the brake pedal is pressed causing the revs to drop to normal.
From your description this appears to be a Brake servo issue.
The brakes are assisted by a vacuum created from the draw off the inlet manifold, it gives assistance too the brake pedal pressure by a large tank/cylinder mounted on the Bulkhead/firewall.
I feel that the sound you a hearing is air being draw into the Brake Servo from the foot pedal seal and the reason for fluctuation in the engine is the vacuum from the inlet manifold is being upset.
Attention I suspect should be addressed to the Brake servo/pedal seal or gaitor.
I hope this clarifies your thoughts?
Please remember to rate my effort.
Posted on Jan 22, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Aug 12, 2014 | Cars & Trucks
Dec 15, 2013 | 2000 Renault 181
Sep 18, 2012 | Renault Megane Cars & Trucks
Jun 27, 2012 | Cars & Trucks
Nov 25, 2009 | 2001 Daewoo Lanos
Oct 04, 2009 | Renault Sportwagon Cars & Trucks
Jun 11, 2009 | 2003 Ford Expedition
Jun 22, 2008 | 2003 Renault 181
Sep 01, 2014 | 2000 Renault 181
1,669 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: