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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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help needed early 850 abs,reward offered!Views : 3119 Replies : 40Users Viewing This Thread : |
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Oct 4th, 2023, 17:06 | #11 | |
mad mechanic
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Quote:
i drove it a half mile or so after in hopes it would go out but still there. the brake lights are working fine but as switch is cheap i will replace it anyway,see i intend to keep this car for the rest of my/its life and if i end up with a few extra spare parts esp hard to find ones im happy with that,but theres a limited supply for this early 850 and so many bits cost 10x more than for same part on later 850s and v70s no idea why that is. i shall look for the source of the codes you found but i did and keeps asking for subscription and card details but says free? any other source to accurate for early 94 850 codes? thank you for reply
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volvo 850s estate 2.4 petrol manual 1994 |
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Oct 4th, 2023, 18:31 | #12 | |
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My data booklet covers models 700, 900, S90, V90, 850, S70, V70, C70 from 1991 to 1998 so the codes should be applicable to your 1994 model.
On the 850 it may take 20 miles or more of driving for the light to extinguish plus several stop/start cycles. I remember using the early flash code system on my 480's, many, many moons ago, but couldn't remember the sequence/procedure. Found the following procedure on Volvo 480 Club Europe (codes not applicable): Quote:
Alternatively, if above doesn't work, the chaps in the 700/900 Series General may offer assistance reading and deleting DTCs. And no need to pay for anything that is freely available to us enthusiasts. Maybe try a different web browser
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Oct 6th, 2023, 17:49 | #13 |
mad mechanic
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[QUOTE=Baffler;2916808]My data booklet covers models 700, 900, S90, V90, 850, S70, V70, C70 from 1991 to 1998 so the codes should be applicable to your 1994 model.
On the 850 it may take 20 miles or more of driving for the light to extinguish plus several stop/start cycles. I remember using the early flash code system on my 480's, many, many moons ago, but couldn't remember the sequence/procedure. Found the following procedure on Volvo 480 Club Europe (codes not applicable): hi well thanks i think it started to make some sort of sense and i am awaiting delivery of a new brake light switch and an oe used brake position sensor (though i think my repaired one is working as no code for that now) i also found the electrical part of the ignition switch though im not convinced there anything wrong with the original i think it has been replaced possibly in 2005 as theres some invoices for a drivers airbag and ignition barrel but cant hurt to have a spare. as i had a little time to kill i took all the plastics i have undone and repaired and cleaned them as some heavy handed monkey had been at the dashboard for some reason and broke some of the screwholes clean off thanfully the bit of plastic where still there and some careful use of superglue means it should all screw back properly and get rid of some rattles and squeeks! i just pray that the brake light switch finally gets the abs evil light out,interesting that it needs to be driven esp as it now has no mot,i hate being unable to use it esp as the cat and one of the dogs need the vet......peace
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volvo 850s estate 2.4 petrol manual 1994 |
Oct 13th, 2023, 14:31 | #14 |
mad mechanic
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help!!!!!!!!!!!!!!!!!!!!!!!!!!!! still trying to kill the evil thing (abs warning light) today i fitted a brand new genuine volvo brake light switch and a used but known to be good brake position sensor this cleared 2 of the 3 stored dtcs but i have this now
Right front wheel sensor, no signal on moving off 212 code its the last one but as far as i can see theres nothing broken or damaged on the right front connector and the sensor is new,should i chop off the connector and solder direct to the sensor? anyone?cheers
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volvo 850s estate 2.4 petrol manual 1994 |
Oct 13th, 2023, 18:06 | #15 | |
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Quote:
OK, so you're getting there, only the front right sensor issue to sort out now. The sensor is new but it may still be faulty? By no means unknown... Also I'd suspect the reluctor ring (ABS ring) - is this new? If so, are you totally sure it's undamaged? Might be worth removing the sensor and inspecting it really carefully, ideally with a bright light and magnifying glass. ANY irregularity or imperfection can cause the problem you're seeing. I've just replaced both of mine, mainly because of an intermittent ABS light, gradually getting worse. Stick with it buddy! HTH
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Oct 13th, 2023, 18:16 | #16 |
mad mechanic
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fixed it!the evil thing banished!
hi all well at long last i fixed the evil thing the abs light is out!new mot today so im a happy and somewhat less strssed volvo 850 owner,my neck is killing me now after sodding about upside down trying to fit the new brake light switch.
incidently i did an autopsy on the old brake light switch and found it is a 2 pole switch and has 4 contacts one of those 4 was missing if i had not broken the plastic in order to open it i maybe could have repaired it with a blob of solder where the contact was absent but as it is it now has a new genuine volvo switch and the original brake position sensor i repaired which is now working,skandix wanted £168 for it!im glad i can still solder well. next up is getting the 4 wheel alignment but garage says it maybe to old and they have no settings for it,anyone know where one could find them? cheers all.
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volvo 850s estate 2.4 petrol manual 1994 |
Oct 13th, 2023, 18:37 | #17 |
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This is for 1995-1996
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Oct 13th, 2023, 21:50 | #18 |
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Oh, your previous post said you still had a left front wheel sensor code? Really happy for you if it is indeed now fixed, what fixed it in the end? Cheers
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Oct 13th, 2023, 22:15 | #19 |
mad mechanic
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hi it seems the pattern part sensor from intermotor is not quite the perfect fit theres 2 alignment lugs and one is slightly out of alignment so even when you tighten the 10mm nut the sensor sits higher than the original one and so further away from the ring it required a little shave with the fine file and then sat correct and after a drive about half a mile in which the light was on at start then after a few hundred foot it went out,then back on then off and stayed off!cheers.
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volvo 850s estate 2.4 petrol manual 1994 |
Oct 14th, 2023, 09:44 | #20 |
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Excellent, thanks for letting us know. You must be over the moon......
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