I have an intermittent problem of lack of braking power + hard pedal. It is maybe once every 10 braking.
I did all the tests recommended to check brake booster & vacuum, but could not identify the problem. Pressure seems to hold well.
One thing is odd though. When I start the engine after having emptied the vacuum reserve and pushing the pedal strongly, there should be a little down movement of the brake pedal when I start the engine to show that the booster is functioning properly. I my case, however, there's quite significant movement, maybe 2 inches down.
Is it possible that the problem is caused by the load sensing proportioning valve which does not put proper braking power on the rear wheels? My LSPV cannot function properly as it is tied to the carosserie, 30cm above the rear axle, but I am in Cameroon and it is difficult to find someone to fix it...
I did all the tests recommended to check brake booster & vacuum, but could not identify the problem. Pressure seems to hold well.
One thing is odd though. When I start the engine after having emptied the vacuum reserve and pushing the pedal strongly, there should be a little down movement of the brake pedal when I start the engine to show that the booster is functioning properly. I my case, however, there's quite significant movement, maybe 2 inches down.
Is it possible that the problem is caused by the load sensing proportioning valve which does not put proper braking power on the rear wheels? My LSPV cannot function properly as it is tied to the carosserie, 30cm above the rear axle, but I am in Cameroon and it is difficult to find someone to fix it...