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Car Forum / Saab Cars / March 2004ABS
Hi, Does an "ABS" light on the instrument panel of a 1988 Saab 900 indicate that this car is equipped with an anti-lock braking system? Some people have told me this light doesn't necessarily mean that the car is so equipped. Thanks, Bob > Hi, > > Does an "ABS" light on the instrument panel of a 1988 Saab 900 indicate > that this car is equipped with an anti-lock braking system? Some people > have told me this light doesn't necessarily mean that the car is so > equipped. Yes, that doesn't mean it has ABS. Someone else just answered this, try those things, or open the hood & look at the brake master cyl. > Hi, > [quoted text clipped - 6 lines] > > Bob Most cars have one standard instrument cluster used for all models, in my experience with Volvo, all the older ones have both the manual tranny Overdrive light, the automatic tranny overdrive lockout light, choke light, glow plug light, and a few other indicators that are only used in certain cars. The easy way to find out is to look under the rear seat base, Ecu = abs, No ecu = no abs, regards tom. > Hi, > [quoted text clipped - 6 lines] > > Bob pardon my ignorance, what's "ecu"? Steve = : ^ \ Tom@Saabtech said: > The easy way to find out is to look under the rear seat base, Ecu = abs, No > ecu = no abs, regards tom. [quoted text clipped - 8 lines] >> >> Bob > pardon my ignorance, what's "ecu"? > > Steve = : ^ \ Engine Control Unit, ie Computer, brain box, etc. Technically the ABS doesn't use an "ECU" but it does have a control box, commonly the terms are used interchangeably. > Engine Control Unit, ie Computer, brain box, etc. Technically the ABS > doesn't use an "ECU" but it does have a control box, commonly the terms are > used interchangeably. A more generic meaning of ECU in the automotive world is Electronic Control Unit. The ABS control unit certainly qualifies as an Electronic Control Unit, ECU.  SignatureG?ran Larsson http://www.mitt-eget.com/ > The easy way to find out is to look under the rear seat base, Ecu = > abs, No ecu = no abs, regards tom. Surely the really easy way to find out would be to jump on the brakes and see? Assuming the ABS hasn't packed up. > > The easy way to find out is to look under the rear seat base, Ecu = > > abs, No ecu = no abs, regards tom. > > Surely the really easy way to find out would be to jump on the brakes and > see? Assuming the ABS hasn't packed up. if abs light is on while driving, you had abs, and it no longer works ;-) > if abs light is on while driving, you had abs, and it no longer works ;-) You're just far too trusting! No, the real only guaranteed "known" of any lit bulb is that it means that the bulb still works. As to what it is designed to indicate, well that could also be true. :) Good point! I'm still waiting for my "Failed" Tailights to occur again (either via the display or in reality) Although I agree that at least around here (with all this snow) just tromping on the brakes will tell you very quickly that the ABS is alive and in your way. I'd take my C900 brakes over this ABS Equipped GM900 anyday. -meld >>if abs light is on while driving, you had abs, and it no longer works ;-) > [quoted text clipped - 3 lines] > > :) > Hi, > [quoted text clipped - 6 lines] > > Bob Hi. Not sure what country you're in? I believe ABS started in the c900 in 89, but there's a possibility it started the year before in some locales?? Another way to ck, in addition to what's already been stated, is to look for an "accumulator" aka "the bomb" (or lesser known as the "canon ball"). It's maybe about 10 - 12 cm / 4 - 5 in in diameter, and looks like a "bomb", right next to the brake fluid reservoir. The same unit was used on 9000s. There is an imbedded 7 or 8mm internal hex/allen head at the top Note that, when new, the accumulator is not under just hundreds, but under thousands PSI of pressure (just over 2000 psi, IIRC, of nitrogen, in a separate but adjacent chamber to the brake fluid chamber). If you have an accumulator, and need to remove/replace, depressurize by pumping the brake pedal 20 - 25 times with ignition key off hth Lance |
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