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ABS light flashing. any ideas?


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hi

now have my abs light flashing. unfortunately i cant do a free scan because i dont have it.

any suggestions?

i did replace the off side rear abs sensor about a month ago to clear the abs light that was permanantly on. that worked out ok. i know it was that beacuse mattys told me in bromsgrove when they did a free scan.

this is a different fault though.

ive checked the fliud level. thats all ok.

i have had a guy changing some bushes. i wonder if he has disturbed something. no wires/plugs off that i can see tho

dave

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Check your brake light isn't staying on at times. My brake pedal somwtimes didn't fully return, leaving the brake light on with, I assumed the the ABS computer reading a brake problem, the ABS lights doing their flashing thing and finally the car shutting down. Fixed with a modified return spring mechanism. No more problems since.

DanR

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dan

youve just triggered something in my head,

ive just changed all the bulbs for neon bulbs which cost me a fortune! never the less it may be tryin to tell me i have no brake lights because obviously neons measure like diodes and dont give a resistance. therefore no load so it thinks both bulbs are gone.

ill check this tomorrow and let u know

dave

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I've heard of this exact problem from someone else (replacing the globes with ones with next to no resistance will cause a problem within the ABS circuit).

Simon  (94 S4)      My Esprit will be for sale in late 2017

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IT WAS THE NEONS

SO IVE ORDERED SOME LOADING RESISTERS

CAN BE OBTAINED FROM RS DIRT CHEAP IF ANYONE HAS THE PROBLEM IN THE FUTURE

rswww.com I KNOW A STRANGE WEB SITE

PART NUMBER: 9393114

25 WATT 6.8 OHMS CERAMIC ALLOY CASED RESISTERS

ONE PER BULB

ONE ON THE STOP AND TAIL (ONLY ON THE STOP PART OF THE BULB)

AND SAME ON THE INDICATORS

IN PARALELL WITH THE BULB

DAVE

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Question for Danny:

Can you describe in more detail the return spring mechanism, as mine is doing exactly what you describe. When I lock the car, the stop lights very often stop in, and i have to put my foot under the pedal and lift it to turn them off!!

Where did you get the spring?

Thanks

Glyn

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Hi Glyn,

When I was modifying the pedal spacing (see the post on shoes) I tack-welded a small bracket on the brake pedal arm with a hole. I used a simple light tension spring from the local hardware store. The other end of the spring was fastened to the steering column with a cable tie and by moving it up or down can adjust the tension on the switch.

Before I removed the pedal box (version 2) I fixed the spring to the pedal arm (version 1) with a couple of cable ties. But I couldn't find a position where it wasn't fouled by the rotating steering uni-joint. You could try this method but use a wire about 15cms long as a link that may clear the uni and then connects to a spring running alongside and fastened higher up the column. My recommendation would be version 2 and do the pedal spacing at the same time.

Cheers, Danny.

DanR

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