R&R ABS Pump on 92Q

Post by **firstq** » Mon Feb 17, 2003 9:36 am

My good old 92Q (now 106K) is leaking at the ABS pump - I can see the brake fluid around the pump base and housing. Also the master cylinder level drops a bit in a month or so. it is not leaking very bad, but perhaps enough to bother me besides being dangerous.

Is the R&R on this a DIY item? Anything to watch out for ? (pressure in ABS lines, etc). What is the customary labor for this at an independent shop (hours?).

The new pump from the dealership is out of question, I aint paying 1400-1600 for this item - can this item be trusted from a yard? There are plenty of them for around in the $50-$120 range.

Thanks

Post by **Q45tech** » Mon Feb 17, 2003 9:36 am

You must have been really bad about changing your brake fluid ...[every 2 years when pads are replaced]........the after 90 almost never leak! The master cylinders do but they changed the gasket material in 1991.

Junk yard units are usually ok except for those that came new with 1990 but they may have already be replaced on the wreck?

Post by **firstq** » Mon Feb 17, 2003 9:36 am

Blame it on the previous owner - of the 12 years, I have only owned it for the last 1 year - the ABS was leaking when I got the car.

Dennis, if I am reading your response correctly, stay away from 90Q pump [no way of knowing they have been repalced], others (91, 92, 93) are probably okay for my 92Q?

ALso, is this is a simple DIY?

The yard rep was scaring me with the pressure in the ABS lines - stating I can hurt myself if someone accidently hits the brake pedal while working on R&R the ABS Pump.

Anything else to watch out for?

Thanks

Post by **Q451990** » Mon Feb 17, 2003 9:36 am

The yard rep was full of it! Just bleed the system down at the calipers and you'll be fine. It's basically a bolt-in, bolt-off job - two electrical connectors and the brake lines. If you don't have speedbleeders you might go ahead and order them - makes anything to do with brake work much easier!

I replaced mine in an afternoon but that also included sanding down the actuator bracket, priming, painting, etc... the brake fluid destroyed the paint!

Heath

Post by **Q45tech** » Mon Feb 17, 2003 9:36 am

By new relays and change them or at least keep them with your 100 other spare bulbs, relays, and fuses fuse links.

A junk Q is a treasure trove of goodies and spare modules every owner should have at least one in the back yard.

Post by **firstq** » Mon Feb 17, 2003 9:36 am

Okay - I am convinced.

what is the right way of doing this job? How can I drain the brake fluid from the brake lines coming into the ABS module before unbolting it (or is it even needed) - thinking dripping brake fluid from all the lines into the ABS pump when unbolted is to be avoided, right?

Should I get the fluid out of the BS pump from the ABS bleeder valves first? I am assuming I should not be pressing the brake pedal when trying to get the ABS pump bled - this is still before trying to unbolt this [perhaps using the gariot's pump would make pressing the brake pedal unnecessarry anyways]. I know, will have to bleed it after doing the R&R on the pump.

I have read about the speed bleeder from the gariot's garage, is there a cheaper alternative that works as well? No problem speding 60-70 on the gariot's - it would be an investment anyways.

Thanks for your help.

Post by **911/Q45** » Mon Feb 17, 2003 9:36 am

I love the Griot's Garage suction bleeder! Suck the master cylinder empty from the ABS bleeders and you should have no fluid drip problems. After you install the ABS unit, keep the master cylinder full(the Griot's bleeder comes with a bottle to do this) and bleed out the ABS bleeders, then the calipers until all new fluid is coming through. You can do it all yourself and no pedal pumping is required.

Post by **DAEDALUS** » Mon Feb 17, 2003 9:36 am

Speed bleeders are acutally little one-way valves to replace the bleed fittings on your car. There are cheaper versions sold by Earl's which have worked well for me. $10/pair. Cheap and convenient, just not as handy as the Griot's device.

Post by **greg_atlanta** » Mon Feb 17, 2003 9:36 am

firstq wrote:My good old 92Q (now 106K) is leaking at the ABS pump - I can see the brake fluid around the pump base and housing. Also the master cylinder level drops a bit in a month or so. it is not leaking very bad, but perhaps enough to bother me besides being dangerous.

If the brake fluid is not currently crystal clear (fresh), flushing and refilling the fluid may help since new brake fluid will soften the rubber seals.

I extended the life of my master cylinder for an extra 3 years by changing the fluid (but needs to be replaced soon).

Post by **firstq** » Mon Feb 17, 2003 9:36 am

Did the brake flush today : the ABS pump and the 4 tires using MOTIVE pressure system (bought for 39.95 + 6.0 shipping from partsbmw.com) - was a breeze to flush the brake lines.

http://www.partsbmw.com/produc...165DC

If you are looking for a one-man quick brake flush, give this a serious consideration. I have multiple cars and having a handy tool to flush fluids is a must.

What do you guys think, can this be used to flush the power steering fluid? I can pump up the pressure inside the reservoir all the way upto 30 psi - if I disconnect the return power steering fluid line [beneath the battery area] would it flush the most of the fluid?

Thanks

R&R ABS Pump on 92Q

R&R ABS Pump on 92Q

Re: R&R ABS Pump on 92Q

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums