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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Worn indicator stalk?Views : 1941 Replies : 23Users Viewing This Thread : |
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Jun 19th, 2021, 18:38 | #11 |
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I've just had to change the flasher relay on my 740, this was doing odd things. I noticed a few times that the indicators and hazard flashers were not working at times, I wondered if it was the stalk that was causing that. The other odd thing was the seat belt warning lamp flashed rapidly and then after a while would stop, but I couldn't remember whether it had always done this or not.
I hadn't realised that the indicator flasher did this as well until I was groping around on the relay board and could feel it. I found by manipulating the relay the flashers either then worked or would stop working. New relay in and everything ok and the seat belt warning is back at indicator frequency. Still haven't quite cured the bulb failure warning flashing in sympathy with the left hand indicator? |
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Jun 19th, 2021, 18:54 | #12 | |
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See the brown wires behind the aerial motor? One of those is the earth for the light cluster, chances are there's a bad connection there and/or on the cluster itself on the tail light bulb and it's using the indicator bulb as a partial earth. If you drive somewhere dark at night (difficult in Chatham, too many street lights!) and turn the left indicator on you should see the tail light bulb dim slightly when the indicator flashes. That's the proof of the bad earth as it shouldn't happen. Clean up those earths, it should get rid of the "sympathy flash" on the BF light.
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Jun 19th, 2021, 21:39 | #13 | |
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Just took the car out and the left indicator is now permanently flashing. I had to pull over and remove fuse 9 to get home. I previously ordered a relay but looks like I now need to order an indicator stalk. I'll also check the tail lamp earths tomorrow. Last edited by m1santhrope; Jun 19th, 2021 at 21:46. |
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Jun 20th, 2021, 17:09 | #14 |
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Still have the bulb failure warning light come on with the heated rear window (and it's always done this). There was another connection the earth stud with a red ident, which I suspect might be the return for the HRW, but all were clean so puzzled with this one. |
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Jun 20th, 2021, 17:51 | #15 | |
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I'm guessing you have an estate? You'll have to remove the tailgate trim panel and find the earth inside for the number plate bulbs and the HRW and clean those to fix the second problem.
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Jun 20th, 2021, 21:25 | #16 |
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I spent the morning cleaning up both rear lamp connections including that annoying 10mm bolt behind the side panel.
I discovered the black offside earth lead had come off the terminal, i must have dislodged it when adding a missing reversing lamp holder and lamp. No more bulb warning lamp, just waiting for the replacement flasher relay now. |
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Jun 20th, 2021, 21:42 | #17 |
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If the indicators are working now and the hyperclicking has stopped thanks to your remedial work on the earths, i'd put the new flasher relay in your spares stash for if/when it fails. Normally they're pretty robust units and don't tend to fail but either way it sounds like you've made some good improvements.
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Jun 20th, 2021, 22:39 | #18 |
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Unfortunately the relay still plays up but only briefly after indicating. So im going to swap this out as a process of elimination. Might still be an issue elsewhere but its nowhere near as obnoxious as it was yesterday.
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Jun 24th, 2021, 14:05 | #19 |
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The replacement relay has cured the hyper flashing. Thanks to everyone that helped.
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Jun 24th, 2021, 14:50 | #20 |
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Glad you've got it sorted, obviously a fault within the relay although it's not common. Did you get a straight replacement or did you get an electronic flasher relay?
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