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Another brake question


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Hi, guys.<P>Recently found this page and have found a lot of great information. Thanks for the help.<P>Now I have a question that I haven't seen answered here (if it was and I just didn't find it, I apologize for the repetition).<P>My Mom owns an 88 with about 107k miles on it. For the last 2 years or so the yellow brake light has been on and the ABS has not worked (still stops, just no ABS). She has taken it to three GM dealers, none of which have been able to diagnose the problem (they never see a Reatta and I think there are only 2-3 in this area). She was told at the second-to-last dealer that she would have to replace the entire system and that it wasn't worth the price. My guess here is that they just didn't know what to do and so wanted to replace the thing. The guys at the current dealer have been very accomodating, but they just don't have experience with this brake system.<P>After reading many of the posts about the brake system, I'm thinking that I am going to replace the accumulator and the brake relays. It may or may not solve the problem, but I think it is still worth doing.<P>Question 1. Am I being a moron here? Is this a waste of money?<P>Question 2. I was going through the brake test and ran into something that concerns me. For the second test it takes 35 pumps for the pedal to get very hard. My concern is that starting at pump 9 and continuing right through until the pedal hardens, the pedal is complete mush and goes to the floor with no resistance at all. Is this normal or is there something wrong?<P>Any help is appreciated, and sorry for the long post.<P><BR>Craig

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Guest EDBS0

Others much more knowledgeable here...<P>Long detailed posts are good.<P>my 2cts.<P>Relays are cheap and good preventative maintenance. Do the 3 (fuel pump is 3rd).<P>I would like to see all results of brake test at <A HREF="http://www.reatta.net/brakes/brakes_troubleshooting.html" TARGET=_blank>http://www.reatta.net/brakes/brakes_troubleshooting.html</A> <P>Rebuilt units available here <A HREF="http://www.priorreman.com/Catalog%20Page_ABS.asp" TARGET=_blank>http://www.priorreman.com/Catalog%20Page_ABS.asp</A>

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Guest wally888

I would 1st. check for codes at the ALDL.<BR>What you learn there will have influence on next procedure.<BR> Everyone should flush at least every 2 years!<BR> Switch the Main and Pump Relays to see if there is any change in lights. If the Red light comes on, the Main Relay ( now in the pump relay position) is bad.<BR> We are just beginning to understand the differences in # of pumps, leakdown times, reserve fluid under pressure...............<BR> The nitrogen charge in a new Accumulator may vary several hundred pounds thus giving different , but within limits, test results.<BR>The 35 pumps to hard pedal may be perfectly normal for your system. <BR> I have performed test #2 on two different Reattas, both before and after replacing the Accumulators. Once pressure is relieved( this figure, # of pumps, really varies depending on pressure present at the start and the conditions of various components plus , maybe, the thickness of fluid, temp. of fluid............) then there are several other soft, to the floor pumps before pedal gets hard.

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