If you have not replaced the flex line (hose), you might try this on the one corner. Sometimes the hose liner will fail and act as a check valve. Easy and cheap to try. After 20 years, if they have never been replaced, it would be good to replace them anyway.
Did you get clean fluid after you flushed all lines?
volvolugnut
Brake caliper binding/sticking after hard braking
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volvolugnut
- Posts: 6223
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Re: Brake caliper binding/sticking after hard braking
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
-
abscate
- MVS Moderator
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Brake line replaced per post one.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
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pgill
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I was confused by your brake line vs. brake hose reference also.
Your system is getting stuck and acting as a check valve.
Master Cylinder - if the piston doesn't make it back past the port for the reservoir then it will act as a check valve
Test: lock up the brake and tap the master cylinder with a hammer if this causes the reservoir to fill then replace the master cylinder
ABS pump: I haven't taken one apart but inherently by its function it can isolate the brakes
Test #1: lock up the brake and disconnect the input brake line (for the side with the problem) Does it spray brake fluid?
Test #2: lock up the brake and disconnect the output line (for the brake with the problem) Does it spray fluid?
---> Test #1 very little fluid Test #2 sprays fluid - ABS is acting as a check valve
---> Test #1 sprays fluid Test #2 sprays fluid - ABS is working normally (replace master cylinder)
---> Test #1 sprays fluid Test #2 very little fluid - Testing is inconclusive, repeat tests
Good luck
Paul
Your system is getting stuck and acting as a check valve.
Master Cylinder - if the piston doesn't make it back past the port for the reservoir then it will act as a check valve
Test: lock up the brake and tap the master cylinder with a hammer if this causes the reservoir to fill then replace the master cylinder
ABS pump: I haven't taken one apart but inherently by its function it can isolate the brakes
Test #1: lock up the brake and disconnect the input brake line (for the side with the problem) Does it spray brake fluid?
Test #2: lock up the brake and disconnect the output line (for the brake with the problem) Does it spray fluid?
---> Test #1 very little fluid Test #2 sprays fluid - ABS is acting as a check valve
---> Test #1 sprays fluid Test #2 sprays fluid - ABS is working normally (replace master cylinder)
---> Test #1 sprays fluid Test #2 very little fluid - Testing is inconclusive, repeat tests
Good luck
Paul
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Milehighv70xc2
- Posts: 19
- Joined: 9 December 2020
- Year and Model: '99 S70 T5 5spd
- Location: Denver
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UPDATE---
The return line piston in the abs block is not functioning. Took it to a shop to have them hook up their scanner and run through the abs functions.
Anyone have access to a S/V70 parts car?
I am looking for the abs pump. For whatever reason, the pump in this car seems really hard to find. Doesnt exist in the aftermarket and a new Volvo unit is almost $2000. It is part #9496439. The car is a `99 T5 5spd. I am thinking that being a 5spd maybe makes it different then the autos?
The two on ebay aren't worth trying. Both have visible rust around the motor cap. I can only imagine what the inside of the block and pump look like. That is my main concern in general. Finding one that is in good condition, given it will be coming off of a 20 plus year old car.
Has anyone here ever pulled the caps off of the pistons on the abs block? I have read that on some other brands of cars the caps pop of kind of like a wheel bearing cap.
I am going to pull the pump off and see if I can remove the caps. I am also going to soak it in some parts cleaner and see if I can get it to free up.
Don't really have to many options right now.
Pgill-- Thanks for the little write up. That was my next step of diagnosing the problem. Trying to release the pressure at the block. That wheel brake line is the closest to the firewall and really difficult to get a wrench on. So I wasn't able to check if I could release the pressure. It was easier to spend $100 and have someone give me an answer.
Again, thanks everyone for the help
The return line piston in the abs block is not functioning. Took it to a shop to have them hook up their scanner and run through the abs functions.
Anyone have access to a S/V70 parts car?
I am looking for the abs pump. For whatever reason, the pump in this car seems really hard to find. Doesnt exist in the aftermarket and a new Volvo unit is almost $2000. It is part #9496439. The car is a `99 T5 5spd. I am thinking that being a 5spd maybe makes it different then the autos?
The two on ebay aren't worth trying. Both have visible rust around the motor cap. I can only imagine what the inside of the block and pump look like. That is my main concern in general. Finding one that is in good condition, given it will be coming off of a 20 plus year old car.
Has anyone here ever pulled the caps off of the pistons on the abs block? I have read that on some other brands of cars the caps pop of kind of like a wheel bearing cap.
I am going to pull the pump off and see if I can remove the caps. I am also going to soak it in some parts cleaner and see if I can get it to free up.
Don't really have to many options right now.
Pgill-- Thanks for the little write up. That was my next step of diagnosing the problem. Trying to release the pressure at the block. That wheel brake line is the closest to the firewall and really difficult to get a wrench on. So I wasn't able to check if I could release the pressure. It was easier to spend $100 and have someone give me an answer.
Again, thanks everyone for the help
Last edited by Milehighv70xc2 on 17 Dec 2020, 17:23, edited 1 time in total.
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abscate
- MVS Moderator
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I’ll check this number for compatibility in web store
ABS Pump Motor 8619543
I’ll have to test this part first though, unknown
Luckily I happen to have a T5 Stick shift in the driveway
I did find one in Poland , too
https://auto24parts.com/en_GB/p/ABS-PUM ... 233-/97345
ABS Pump Motor 8619543
I’ll have to test this part first though, unknown
Luckily I happen to have a T5 Stick shift in the driveway
I did find one in Poland , too
https://auto24parts.com/en_GB/p/ABS-PUM ... 233-/97345
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
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Milehighv70xc2
- Posts: 19
- Joined: 9 December 2020
- Year and Model: '99 S70 T5 5spd
- Location: Denver
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Thanks abscate
So you might have a pump I could buy from You? That would be amazing.
I had looked at that one from Poland as well. Price seamed kind of high and it isn't in the U.S, so I just didn't feel comfortable buying from there.
Another site I found was ErieVoVo. He has a couple, but $485 for a pump pulled from a 20 plus year old car from the north east,, no thanks. I know beggers can't be choosers, but that is just ridiculous. All his prices are in general.
Thanks for the part number. I will have to look around for one.
So you might have a pump I could buy from You? That would be amazing.
I had looked at that one from Poland as well. Price seamed kind of high and it isn't in the U.S, so I just didn't feel comfortable buying from there.
Another site I found was ErieVoVo. He has a couple, but $485 for a pump pulled from a 20 plus year old car from the north east,, no thanks. I know beggers can't be choosers, but that is just ridiculous. All his prices are in general.
Thanks for the part number. I will have to look around for one.
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abscate
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Abs module at Harry’s is $50 +25 = $75, more in line with reality.
Uh, it might take me some time to get to my unit, though...
Uh, it might take me some time to get to my unit, though...
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Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
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Milehighv70xc2
- Posts: 19
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- Location: Denver
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That is just crazy, I new you were supposed to get a sever winter storm , but I never imagined that!! We sure could use that snow out here in CO. I really appreciate all the help and the offer for a pump. Just let me know whenever you get a chance to dig it out. Looks like maybe early January, haha
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volvolugnut
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It's a Volvoloo!
volvolugnuty
volvolugnuty
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
-
volvolugnut
- Posts: 6223
- Joined: 19 January 2014
- Year and Model: 2001 V70
- Location: Oklahoma USA
- Has thanked: 927 times
- Been thanked: 999 times
Or maybe a Transportloo.
volvolugnuty
volvolugnuty
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
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