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Car Forum / Peugeot Cars / November 2006Solved the dodgy speedo on Peugeot 306 1998/S
Some might remember I had a problem with my Peugeot 306 1998/S speedo sticking, only increasing and not returning to 0 following cold weather. Well, I visited the dealers yesterday to ask about the price of a new instrument cluster. I was politely told £365 inc VAT, pay up front, and non-returnable as it's an electrical item. They said it certainly sounded like the instruments, especially as I said the digital odometer was increasing correctly (so speed sensor is okay). Well, after a little work, I removed both the 2 small geared motors (stepper motors?) which work the speedo and rev counter and swapped them over. Result? Rev counter now sticks, doesn't return to 0 and increases each time you rev the engine. Speedo now works perfectly. I then removed the new rev counter (ex. speedo) dial and plan to dismantle it to see if there's some problem in the gearing or something. No idea if I can find a replacement for it - but no point keeping it in there whilst it's not working. Only problem is now without the motor + dial there the backlights shine through at night - I'll just stick something over the hole for now. Any suggestions as to where I might be able to source a replacement motor? No idea of the manufacturer, pin outs, or where to start. My only real chance is finding another broken/cheap speedo and remove the motor from that (probably easier than finding the exact model spec instrument cluster). Just need a working motor - not any of the rest of the instruments. Some pictures of what I did, including the part I want to find a replacement for: http://www.swampie.ukfsn.org/speedo/IMG_0580.JPG http://www.swampie.ukfsn.org/speedo/IMG_0581.JPG http://www.swampie.ukfsn.org/speedo/IMG_0585.JPG http://www.swampie.ukfsn.org/speedo/IMG_0588.JPG http://www.swampie.ukfsn.org/speedo/IMG_0609.JPG http://www.swampie.ukfsn.org/speedo/IMG_0611.JPG Thanks David > I was politely told £365 inc VAT, > > > Some pictures of what I did, including the part I want to find a > replacement for: 'ow much!..365 quid for something of the equivalent sophistication and build quality that no doubt the Chinese could knock up and provide a reasonable profit margin for a retailer in this country to sell for under £30. > http://www.swampie.ukfsn.org/speedo/IMG_0580.JPG > http://www.swampie.ukfsn.org/speedo/IMG_0581.JPG [quoted text clipped - 6 lines] > > David > > I was politely told #365 inc VAT, > > > [quoted text clipped - 5 lines] > provide a reasonable profit margin for a retailer in this country to > sell for under #30. supply and demand i had this argument with a large ford dealership in birmingham to justify thier price they showed me what they paid for it , just 15% mark up , when i looked up the supplier later low and behold they were owned by the same group , on further investigation the parts i needed had come through 6 different companies all owned by the same group >>> I was politely told #365 inc VAT, >>>> [quoted text clipped - 13 lines] > owned by the same group , on further investigation the parts i needed > had come through 6 different companies all owned by the same group Or more than likely got you over a barrel! I've been in the domestic electronics service industry for more decade's and I care to remember, and have to confess that it's been a bit of an eye opener to see the way things have evolved over the years. A classic example was the other week when a guy brought me a PC board to see if I could do anything with it, apparently it was part of a pub glass washing-machine, he said that the manufacturers didn't do a repair service and would only supply a complete new panel at £400 plus Vat, on examination I guess that the component count wouldn't have amounted to much more than £25 even at retail prices. After blanket soldering a plethora of dry-joints and cleaning some relay contacts I charged him 30 quid (after he had confirmed that it was working OK) as you can imagine the chap was as they say 'over the moon'! > >>> I was politely told #365 inc VAT, > >>>> [quoted text clipped - 30 lines] > contacts I charged him 30 quid (after he had confirmed that it was working > OK) as you can imagine the chap was as they say 'over the moon'! We do live in something of a throw away culture these days. (Well most do, I prefer not to). >> >>> I was politely told #365 inc VAT, >> >>>> [quoted text clipped - 39 lines] > I > prefer not to). As someone aptly said some years ago. "We live in an effluent society" Mike. > > We do live in something of a throw away culture these days. (Well most do, > > I > > prefer not to). > > As someone aptly said some years ago. "We live in an effluent society" > Mike. I like that one. In uk.rec.cars.maintenance David Hearn <dave@noswampiespam.org.uk> wrote: > Some might remember I had a problem with my Peugeot 306 1998/S speedo > sticking, only increasing and not returning to 0 following cold weather. [quoted text clipped - 15 lines] > No idea if I can find a replacement for it - but no point keeping it > in there whilst it's not working. I'd try really carefully dissasembling, and lubricating the speedo motor. Due to the way stepper motors work, they are fed two alternating voltages, and the delay between them sets the direction of rotation. Physically the voltages run electromagnets, which repel or attract a magnet from them. In sequence it's pulled towards one electromagnet then the other. If one of these phases is missing, then it won't really go anywhere, unless it's already moving. Another perhaps more likely alternative is simple wear, or contamination - if a bit of grit has got into the works it'd do pretty much this. > In sequence it's pulled towards one electromagnet then the other. > If one of these phases is missing, then it won't really go anywhere, > unless it's already moving. Id still check the wiring in case but it does sound like binding on the shaft to me, worth a stripdown and sand a pencil tip with very fine paper to make a nice dry lube for any bits you can get it into. >> In sequence it's pulled towards one electromagnet then the other. >> If one of these phases is missing, then it won't really go anywhere, [quoted text clipped - 3 lines] > shaft to me, worth a stripdown and sand a pencil tip with very fine > paper to make a nice dry lube for any bits you can get it into. The problem started off (at the start of some cold weather) as it sticking and never going backwards (so 0-30mph-0mph showed 30mph, another 0-30-0mph showed 60mph etc.) After a while, when the car had warmed up it started going backwards again (although never back lower than 100mph!). At this point turning the ignition off would reset it (via a juddering movement) back to 0. Ignition back on again would be fine (until left for a period/cold etc). After taking a look/fiddle with the instrument panel it stopped doing the warmup and return thing, and just stuck. But even then, it would wiggle a bit sometimes, but never more than a few degrees, and always still pointing right down over the distance counter. D |
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