Any one know what's the deal here ? .

Brake pedal went to floor, new master cylinder is $1,000.00 ! and the ABS module is $3,400.00 ! .



No leaks , no brake fluid loss.....

I was thinking internal by pass in the master cylinder but no kits seem to be available....

This is / was a popular car so I imagine someone has heard about this problem before .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Those sound like dealership prices...

I once owned an Oldsmobile in which the brake pedal suddenly went to the floor without any prior warning. No external leaks were found, and plenty of fluid in the system. Bad master cylinder...

You can probably pull the fuse to the abs as a quick check on that.

I just did the front hoses (to the caliper) on one of those. There was a leak in the one and as installing that and testing, the other instantly gave out. I guess it is an age issue. worth an ispection.

The master cylinder piston cups are torn internally, a rebuilt cylinder is about 60 or 100 dollars from a parts shop.

I repaired a chevy W body once with this same problem, I just removed the cylinder from the booster and took it apart, the problem was junk in it from never flushing it. The bore was ok so I put it back and it was A OK after that.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

Thanx fellas ;

I too think it's the master cylinder, I see no one appears to carry rebuild kits, rock auto has the master cylinder for $77 so mayhap my buddy is worrying about nothing .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

The prices that some shops quote now are just ridiculous. e.g. a coworker took her 06 dodge caravan to a shop near her house for a power steering problem, the shop quoted her 2800/- dollars (yes, two thousand and eight hundred dollars) for the repair. Which entailed

engine+trans removal from under the van to replace power steering pump and hoses. (while the Dodge service manual tells you to remove the wiper cowling which takes about 20 minutes even for a novice).

I helped her out and called some shops who did the job at a micro fraction of the price, the only problem was the power steering reservoir was clogged. They did other small jobs too like a brake flush etc.

I beleive these rates are the shops way of telling customers to "go away and take this old vehicle with you"

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

no it's a way for the dealer to make money.back in the 80's in my dads shop our transmission guy could get in a 4x4 chevy pickup at 7:30 in the morning,pull the trans,take it apart send it out to tank the case,get it back just after lunch and have it done and out the door by 5.the last 3 suburbans i have had i have rebuilt the trans after they lost 3rd gear.and everyone of em took over 2 hrs just to get the y pipe off,and on 2 of em the cheap dirty stainless nuts they use to hold the pipe to the manifold stripped out the studs so then those had to be removed and replaced.so what used to be a day job is now a 3 day job.$$$
saw a picture the other day but it didn't say what engine it was but the starter was in the valley on a v8 under the intake manifold.just what the fudge is all i can say.

I think that older Lexus V8’s have that ingenious starter location.

I remember when I learned about the under intake manifold location of the starter, HUH ?! .

I'm old so I well remember Ford's Y block V8's having a third starter bolt way up high where you were sure to burn your hands / fingers on the hot Summer day when it came into the gas station or shop ~ in those days the mechanic wasn't allowed to choose to let it cool down .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

In another life I used to wrench for a paycheck (outside of US), Being speedy and efficient guaranteed you a good paycheck.

Those toyota V8 starters are easy because the entire manifold is removed as a unit.

If a shop is wasting time and doing a 1 hr job in 3 - then its them losing money and customers both.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

You should inspect the new BMW engines now, the harmonic balancer is built backwards - meaning the damper weight (which is larger than the belt hub) is outside the belt hub rather than inside like every other engine of the world.

The piece of crank you see sticking out of the timing case is not part of the crank but bolted to it with friction washers (no keyway) - and its an inward cone shape meaning its larger at the balancer side and tapers nicely to a smaller end which is fastened to the crank with those diamond washers.

the harmonic balancer oil seal which is pressed into the engine has no stop collar, meaning it can fall into the engine too.

make a mental picture of all the above and now imagine the serpentine belt breaks or slips, now as the damper weight is outside, the belt will not just fly off and lay in the engine room or ground etc, but get wrapped by the oil seal which will let go and now your belt will be introduced to the timing chain by that very welcoming taper of that nose piece. - You get belt material plugging the oil pump pickup which destroys that 10K dollar engine.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

I avoid the four wheeled BMW's like the plague and always have even though I liked the 1600's of the 60's & 70's .

I'm an old vehicle Mechanic,new stuff is so poorly made (IMO) and overly complicated to boot .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better