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94 Cadillac Fleetwood ABS/Traction Control Lights


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Juston
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Jul 14, 2015, 12:07 AM

Post #1 of 6 (1016 views)
post icon 94 Cadillac Fleetwood ABS/Traction Control Lights Sign In

    Have a 94 Cadillac Fleetwood Brougham. It doesn't seem to have as much acceleration power as before. I read online that my car starts off in 2nd gear due to the ABS/Traction Control being on. So I ran the cars self diagnostic to figure out why ABS/Traction Control Lights stay on and it came back right rear wheel speed sensor circuit continuity malfunction OR RPM signal malfunction. I know how to get to the speed sensor but any help on how i would go about finding the RPM Signal?
Juston (aka JMan)

(This post was edited by Juston on Jul 14, 2015, 12:12 AM)


Hammer Time
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Jul 14, 2015, 2:11 AM

Post #2 of 6 (1004 views)
Re: 94 Cadillac Fleetwood ABS/Traction Control Lights Sign In

The ABS/traction control lights being on is not going to effect engine performance. It merely means those systems are disabled due to a malfunction.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jul 14, 2015, 2:11 AM)


Tom Greenleaf
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Jul 14, 2015, 2:14 AM

Post #3 of 6 (1002 views)
Re: 94 Cadillac Fleetwood ABS/Traction Control Lights Sign In

I'm surprised light is on and defaults to traction control so far but Caddy's do funky designs and always did.
Try this as maintenance anyway with a RWD drum brake vehicle take drums off and dump out the dust and it's got plenty if you don't do that routinely.


That dust will or can fool sensors for either ABS traction control I think can only disallow 1st gear on this layout not choose which wheel?


No matter check dust situation inside. DO NOT BREATH THAT DUST!


Problem here on how to clean it out as special vacuum w special filter would be the way. IDK how to totally avoid that dust but might try a disposable parts cleaner brush or something to clean and vac out. Throw out that vacuum filter and do this outdoors.


Overcautious as that dust really is nasty to breathe. It works but just don't blow it clean with compressed air.


Magnetic sensors at or near wheels and brakes can pick up dirt, dust from brake or road and give a false signal. You might even see it with no gap showing on some things like it sensing speeds. Still surprised you can't just shut the traction control off unless integrated with ABS somehow?


T



Tom Greenleaf
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Jul 14, 2015, 2:28 AM

Post #4 of 6 (998 views)
Re: 94 Cadillac Fleetwood ABS/Traction Control Lights Sign In

Add to that: Use of "second" gear was the way you gained traction either selecting it with shifter for "2" on some (not GMs though) and it only stayed in "2nd" or second and on up.


It's outdated for this as this engine has no power like older than this by a LOT where just wet roads you would spin wheels easily by mistake starting off.


As HT said it doesn't/shouldn't be taking away any engine power. It's just choosing a higher gear as you would with a standard shift in extremes of slipping, T


Hammer Time
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Jul 14, 2015, 4:52 AM

Post #5 of 6 (992 views)
Re: 94 Cadillac Fleetwood ABS/Traction Control Lights Sign In

The ABS`system is not selecting any different gears. There should be no connection to that.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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Jul 14, 2015, 6:08 AM

Post #6 of 6 (980 views)
Re: 94 Cadillac Fleetwood ABS/Traction Control Lights Sign In

You are right - shouldn't be any connection. Being a doubting "Thomas" this IMO was the last RWD chassis for a "Car" that GM made and only brought this back due to lost sales. Makes me just wonder what AMC like tricks might have been pulled to cobble together one more model year of a full size car at the same time making what was to totally replace it and forget but did quit making this car for a model year or part of a model year? Forget now on that, T






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