Hi Guys,
1995 4Runner 4x4 3.0 /208 K miles.

So I have had a poor idle condition that has progressively gotten worse in the last 4 months. Come to find out, that there is a hissing air noise coming from the brake linkage area where the rubber boot is that go`s to the Booster. When depressing the brake pedal at a stop the idle usually gets worse ( and thats when you can hear the hissing sound of air ) like down to below 500 rpm,and as low as 250 then almost to a stall. Stuck my fingers through the rubber boot as it has deteriorated and nearly fallen apart.

Can I be reasonably certain that there is a vacuum leak at the brake booster? I called the dealer ,and apparently there is no re-build kit. 750 smackers is alot of dough for a new one.

Any input on the subject would be appreciated...
Thanks!

 

Yeah, try replacing that vacuum hose for like, $2, and see if that makes a difference

 

call around and get a new brake booster it has gone bad. popped a hole on the inside of it. might call wrecking yards they will be cheaper.

 

I think autozone and what nots have them too. Rockauto might have one as well.

 

Thanks Guys , forgot all about Rock Auto ....I am a OEM guy , but im going to go aftermarket on this one.. Looks easy to replace too!

Thanks again..

 

yeah the booster you should be fine on aftermarket, I got an autozone special brake master on mine seems to be working out well too.

 

Good Lord! Is that what dealers are charging for a brake booster? When I replaced mine, remans/Autozone-specials were about $100. I got mine at a junkyard for $50. It hasn't given me trouble, but it's always a risk buying a used part.

 

Newer Yota boosters may retrofit.

 

I've found boosters at PullAPart for about $10. Sold one the other day as a matter of fact...

 

Just a heads up! That job is finished ...Took about an hour and 15 minutes or so. I really could have used a 12 mm Deep socket though : )

Wierd thing : The new booster came with an O ring that they said needed to be put between the booster & master ? I just left it out because it wouldnt have done anything I think, Meaning , it didnt fit anywhere...Maybe it was for a different model or something?