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Generation 3 Pajero NM - NP Models 2000 - 2006

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  #1  
Old 18-02-10
sikhabib sikhabib is offline
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Default ABS hydraulic brake booster motor

Yesterday as i was reversing out the driveway the brake pedal suddenly went as hard as a rock (like there was no vacuum assist) and after a few seconds the abs and (!) lights came on the dash as well as i high pitched (very anonying) alarm. Everytime i turn on the car now i get the warnings

Im booked in tomorrow at MMS st leanords to get the brake boost accumlator fixed as per the recall letter i got a few months back. The guy at MMS was really helpfull and explained the accumulator only comes into effect when the engine is off and it stores enough pressure so you can still press the brakes normally for a couple of goes, my problem is the brake pedal is hard all the time even when the engine is running he believes it could be the complete abs unit which will cost $2000 to replace! i told them to just do the accumulator and if that doesnt fix it then ill sort it out myself.

ive just check all the relays and fuses and everthing is ok, then i removed the air box and gave the abs motor a few light taps with a hammer (with ignition on) and it kicked onto life and the abs alarms went off and the brake pedal is now back to normal. i went for a little drive and everything seams to be back to normal.
Im thinking the abs motor is on the way out, is it possible to replace just the abs motor (or brushes) or is everything one complete unit???

do you guys now if the abs motor will be replaced as part of the recall??

cheers
ronny
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  #2  
Old 18-02-10
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mrbitchi mrbitchi is offline
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Your not gonna like this...

You can only replace it as a whole assembly, and I believe it aint cheap :-(
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  #3  
Old 18-02-10
hoffmonster hoffmonster is offline
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replacement cost is around 3,000 grand i just changed my with a second hand one for around 550 bucks wreckers,but my problem is still there,lights abs on dash .code 61 comes up pressure sensor .all works ok for aday all so then comes back on, i am chashing for a short ,loose conection maybe ,if you get stuck for unit maybe we, could work somthing out cheers, it looks like there nothing wrong with my old unit. p. s. you cant by buy individual bits , tryed.
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  #4  
Old 19-02-10
markc markc is offline
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You can also get parts from this mitsuibishi supplier ex the USA

https://www.globalmitsubishiparts.co...ero-parts.html

Others have used them and say the service is excellent, they ship to Australia and my experience is that they respond next day to any questions regarding shipping costs etc.

The pump unit for your booster can be purchashed seperatly
Assuming you have a NM search in the OEM listing for
2001 Mistubishi Montero
Brakes
Hydraulic system
Hydraulic booster
Pump

and you'll see a price of US$615 or about Aust $700 + postage. As the total cost including shipping will be below Aust$1000 you wont be charged any customs or duty.

My only word of caution here is that although this system is quite reliable and generally only fails due to a lack of brake fluid changes every 2 years 40,000 klm allowing the fluid to become contaminated over time, mainly with moisture and then fail you might have more problems than just the pump.

There could be debris from the failed pump through your whole master cylinder so a total master cylinder swap out might be safer, cost here is just under $US1300 so you need to add shipping to that, convert to Aust $ and then add an additional 15% for customs and duty on the whole parts & shipping costs. Still a lot cheaper than buying here.

If the system is clean and just a burnt out pump motor than just the pump would be ok although somehting must have loaded it up to mak eit burn out. Just make sure you are totally sure prior to purchasing just the pump if you go tha way.

Cheers Mark
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  #5  
Old 19-02-10
Ian Sharpe's Avatar
Ian Sharpe Ian Sharpe is online now
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Quote:
Originally Posted by hoffmonster View Post
replacement cost is around 3,000 grand .
F A R K


my old Ford ED had ABS & I treated it like crap & it never gave me any grief, but $3k!!!!!!!!!!!!!!!!!!

Man thats the cost of 2 ARB lockers
!!
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  #6  
Old 19-02-10
markc markc is offline
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Makes a good argument while smart and complicated isnt always better even though there maybe advantages with the more comlicated system like you still have boosted brakes without the engine running and the ignition on.

Also a good reason to service your brake system and change the brake fluid as recommended.
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  #7  
Old 19-02-10
sikhabib sikhabib is offline
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thanks for all the replys everyone.
i bought the car from a dealer with 200,00km on it, the log book shows it was serviced at every service interval upto 190,000 so im assuming the brake fluid was flushed a few times. i did the 200,000km service (timing belt, plugs etc) when i bought it but i never thought to change the brake fluid. The car has now done 255,000km so fluid may have been in there for a bit too long (though it still looks clean)

The pump hasnt totally burnt out, yesterday i gave the abs motor a hit with a hammer and it kicked back into life and was working 100% until just before i got to mistubishi to have the acumulator replaced. They replaced the acumulator but advised me the abs pump is on the way out and it will cost $900 for the pump + labor. When i picked up the car the brakes were working normally but after about 30min the same problem re-occured, i gave the pump another good wack and it kicked back into life and was still working when i got home. Im hoping its only worn brushes causing the problem, it looks like the pump can be removed off the abs module so im going to pull it off on the weekend and see if i can fix it.

Thanks for the info markc if i cant fix the pump and decide on a new one ill deffinately be getting if from there

hoffmonster pm sent mate
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  #8  
Old 19-02-10
hoffmonster hoffmonster is offline
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hi mark,do you think they supply individaul parts on the brake booster ie a srew in . pressure sensor.cheers hoffmonster.np did 04 exceed.tryied to get to site but would not load up
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  #9  
Old 19-02-10
markc markc is offline
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Quote:
Originally Posted by hoffmonster View Post
hi mark,do you think they supply individaul parts on the brake booster ie a srew in . pressure sensor.cheers hoffmonster.np did 04 exceed.tryied to get to site but would not load up
They should do, I have found them pretty good service wise.

Web site is

https://www.globalmitsubishiparts.co...shi-parts.html

Hopefully this link will work
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  #10  
Old 21-02-10
sikhabib sikhabib is offline
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i pulled off the motor today and one of the copper contacts on the rotor is missing, the brushes are a little worn but still have plenty of life in them.

does anyone know if the abs unit of a 2007 pajero will fill my 2000 NM or if the abs motors are the same? i found a cheap 2007 unit that looks different to mine but going off some pics the motors look identical

Last edited by sikhabib; 21-02-10 at 07:12 PM.
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