Hi all....

I come to you for help once again. When I bought my 89 244 DL a few months ago, the power brake booster was bad. So I swapped the one from my 84 244 DL into the 89. Voila, the problem was fixed. A few weeks ago, I noticed that my brakes were giving out. What I mean by this is that I would be sitting at a stop light and the brake pedal would slowly drop towards the floor as I had my foot on it. My initial reaction was that air was in the brake lines. Time passes and I never had a chance to bleed the brakes. One day last week, I try to drive my car and I find that the brake pedal travels to the floor with no resistance and the brakes are not functioning. Finally, I get the time to bleed the lines. I purchased a hand held vacuum pump to assist in the bleeding process. After bleeding the brakes, I get into my car to see if the situation is corrected. I start the engine, push on the brake pedal and there's a little bit of resistance. The pedal didn't travel all the way to the floor, but it still wasn't anywhere near being perfect. I released the pedal and pushed it again. This time, the pedal traveled all the way to the floor. And that's where I'm still at. I've tried bleeding the brakes three times thinking that I might not have gotten all the air out. And now that I think about things, I'm wondering if the master cylinder is bad. Or is it that I'm not bleeding them correctly? I'm following the procedure outlined in my Haynes manual which corresponds to the process found in the FAQ. I'm by no means a brake expert, which is why I'm posting this. Replacing the master cylinder is probably out of my league and I'd rather not have to pay someone to fix this problem (let alone have to pay for the tow to the repair shop). Is there anything that I'm missing? The brake fluid level hasn't dropped so I'm pretty certain there isn't a leak somewhere. Are there things I should check before resorting to paying for the tow and the repair bill???

Thank you so much for any advice....

Matt