Guest Guest_Chris_* Posted August 15, 2005 Report Share Posted August 15, 2005 Folks, I am hearing a vacuum noise down by my brake pedal on my V70 2001 T5 Wagon with 60K miles on it. It occurs under low engine RPM, around town, etc. On the freeway I don't here it. Brakes seem to work just fine. I've tried to mess around with the boot around the pedal/firewall interface but it makes no difference. Any ideas as this is getting anoying! Is my booster going? Thanks, Chris in Calif. USA :unsure: Link to comment Share on other sites More sharing options...
highspeed11 Posted August 15, 2005 Report Share Posted August 15, 2005 Folks, I am hearing a vacuum noise down by my brake pedal on my V70 2001 T5 Wagon with 60K miles on it. It occurs under low engine RPM, around town, etc. On the freeway I don't here it. Brakes seem to work just fine. I've tried to mess around with the boot around the pedal/firewall interface but it makes no difference. Any ideas as this is getting anoying! Is my booster going? Thanks, Chris in Calif. USA ←Probably an internal leak. I just saw a similiar post. Not the cheapest thing to replace, but pretty easy to do yourself. Link to comment Share on other sites More sharing options...
starfish Posted August 15, 2005 Report Share Posted August 15, 2005 Bye-Bye Booster! You need a new one. Link to comment Share on other sites More sharing options...
Guest Guest_Chris_* Posted August 15, 2005 Report Share Posted August 15, 2005 Probably an internal leak. I just saw a similiar post. Not the cheapest thing to replace, but pretty easy to do yourself.←Ok, sounds like I may need a new booster. I've done this before on other cars. On a Volvo do I just replace the booster without draining the brake fluid from the master cylinder? Just unbolt and replace, or is there more to it? If draining fluid and bleeding brakes I'll just have the dealer do it as I hate that job! Thanks, Chris Link to comment Share on other sites More sharing options...
starfish Posted August 15, 2005 Report Share Posted August 15, 2005 Adjust driver seat to full rear most position.RemoveNegative battery cable from batteryUnderhood crossbraceAircleaner boxPositive battery cables from underhood fuse box Fuse box bolts and pull box aside2 outer bolts holding ABS hydraulic pump to frame rail loosen center bolt, the bracket is slottted and unit can be lifted off2 master cylinder nuts. Do not drain fluid or open any hydraulic line! Lift and fold master cylinder forward without kinking lines. Check for fluid loss from master cylinder into boosterVacuum line and brake pedal position sensor on boosterLower dash trim panelConnecting clip and rod off brake pedal4 booster nutsFinally remove brake booster and replace Reinstall in reverse order Adjust brake light pedal switch by depressing brake pedal and pushing switch in to fully seat. When the brake pedal is released it will ratchet out and be in its new correct position.2 new nuts and a o-ring for the master cylinder are included in the box with the booster and should be replacedCheck brake fluid level Link to comment Share on other sites More sharing options...
Guest Guest_Chris_* Posted August 15, 2005 Report Share Posted August 15, 2005 Thanks for the instructions! Does not look like too bad of a job! Regards, Chris Link to comment Share on other sites More sharing options...
highspeed11 Posted August 16, 2005 Report Share Posted August 16, 2005 Thanks for the instructions! Does not look like too bad of a job! Regards, Chris←The hardest part is removing the 4 nuts that hold the booster to the firewall. Link to comment Share on other sites More sharing options...
volvolady Posted August 18, 2005 Report Share Posted August 18, 2005 We had similar problem with our 01 V70 XC (see my post). We thought at first it was a ripped boot, but turned out the boot had slipped off the booster (sorry I'm not technical) and there was no vacuum seal. The dealer quoted $800 for a replacement brake booster ($500 was the actual part cost), as you cannot just replace the boot. However, my husband, decided he'd see if he could fix it himself. He had to take the brake booster out and managed to return the seal to its correct position. Everything seems to be fine now, and we are keeping our fingers crossed that it won't go again. Just wanted to let you know, in case you want to try this before shelling out big bucks for a new brake booster. (I am sure there are some die hard volvo guys out there that will tell us its the wrong thing to do, but if it buys us a few more miles without another major car expense, we're happy!) Hope this helps? Let us know if you need any info on how he did it.Folks, I am hearing a vacuum noise down by my brake pedal on my V70 2001 T5 Wagon with 60K miles on it. It occurs under low engine RPM, around town, etc. On the freeway I don't here it. Brakes seem to work just fine. I've tried to mess around with the boot around the pedal/firewall interface but it makes no difference. Any ideas as this is getting anoying! Is my booster going? Thanks, Chris in Calif. USA ← Link to comment Share on other sites More sharing options...
Bay13 Posted August 19, 2005 Report Share Posted August 19, 2005 (I am sure there are some die hard volvo guys out there that will tell us its the wrong thing to do, but if it buys us a few more miles without another major car expense, we're happy!)I'm about as die hard as they get, and I work at a dealer, that would never try to push the seal back in, HOWEVER.I'm all for saving money and if it was my car, I'd get down there and try to work the seal back in as well. I just can't do that at work, the liability thing just won't let us. Good job :tup: Link to comment Share on other sites More sharing options...
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