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Brake Problems!

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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SacMeatWagon
Posts: 8
Joined: 12 June 2011
Year and Model: 1991 740
Location: Sacramento

Brake Problems!

Post by SacMeatWagon »

I have a 1991 Volvo 740 GLE (N/A). My front brakes are sticking. The conditions that it happens in are:
1. Under any de-acceleration.
2. Use of the brakes.
Also whenever they stick I have to smack the brake pedal hard to release them. After I release the brake pedal it comes up slowly and makes a popping sound.
And I'm not to sure if this related but I have a vaccuum leak I can hear, it almost dies out, idle fluctuates when I press the brake, and I have a code of 2-3-2 ( adaptive fuel trim to lean or rich at idle). I don't have the money to take it to the shop and I can't afford to buy a part and have it not be it. So any and all help I can get toward a proper diagnosis is definitely appreciated.

My only thought is either bad brake vacuum booster

jimmy57
Posts: 6694
Joined: 12 November 2010
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 4 times
Been thanked: 320 times

Post by jimmy57 »

brake booster. Confirm by removing vacuum line and plugging the line and then drive it carefully and not in traffic since the pedal will be HARD to depress with no booster.

SacMeatWagon
Posts: 8
Joined: 12 June 2011
Year and Model: 1991 740
Location: Sacramento

Post by SacMeatWagon »

hey thank you Jimmy, any suggestions on what I can plug it with?

GlennKorec
Posts: 39
Joined: 23 December 2010
Year and Model: 2004 V70R
Location: Syracuse NY USA

Post by GlennKorec »

You can use a golf tee to plug vacuum lines.
Glenn Korec
Syracuse NY2005 S40 T-5 Auto Triple Black (Wife's)
2004 V70R Black with Nordkap Interior
Former Cars:
98 S70 FWD non turbo silver
99 V70 FWD non turbo (moondust ??)(wife's)

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