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speedometer bounces all round; abs light; engine light

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Jul 22, 2021, 2:34 PM

Post #1 of 3 (168 views)
speedometer bounces all round; abs light; engine light Sign In

1995 Buick Skylark, 3.1

I hesitate even asking this since it just HAS to be a loose wire caused by all my recent repair work. I'm just hoping maybe you might suggest a connector because I've checked them all (wiggle) and all is well again... but for how long.

Everything was working just dandy and I stopped and parked the car at my destination. When I came back out and started the car the speedometer got jumpy, the engine and abs lights were lit.

With all this, the breaks worked GREAT and nothing else seemed to be wrong except for those lights and speedometer. Before going back home I checked the oil and that was good.

If this is a loose connection somewhere I don't see it.

I'd like to focus on the jumpy speedometer. Where does it get it's signal? Maybe I could start there. Thanks.

Hammer Time
Ultimate Carjunky / Moderator
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Jul 22, 2021, 4:08 PM

Post #2 of 3 (159 views)
Re: speedometer bounces all round; abs light; engine light Sign In

I assume this bouncing is only when the car is moving. The speedo is driven by a mechanical cable. The bouncy speedo can either be a bad cable or sometimes a windshield leak allows water into the speedo head causing rust inside the unit.


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 23, 2021, 10:17 AM

Post #3 of 3 (119 views)
Re: speedometer bounces all round; abs light; engine light Sign In

If a physical cable it comes out as dashboard end only. If frayed there were inserts, aftermarket or you need whole cable and case. They sell cable lube if you get that out but suggest a smear of grease the length of it save the case if not a bird's nest mess if you get cable out.

ABS and other confusion is probably early OBDI or II in this model year BUICKs only. Drum brakes sometimes used the magnet sensor inside drum just air blow it out and run for you life that dust is deadly! REALLY don't allow breathing that.

If it doesn't get info on speed of car vs speed of a wheel you'll get ABS warnings.

1995? It probably has rear drum brakes make dust you are supposed to dump that out about twice a year an not another human or tech on Planet Earth knows that, nor is it on any routine service list you just have to know it! It's shocking how this is missed by that design - all vehicles that used that disc/drum set up,


(This post was edited by Tom Greenleaf on Jul 23, 2021, 10:26 AM)

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