D9 Erratic Speedometer

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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pumbaah
1.6 8v
Posts: 19
Joined: Tue Apr 11, 2006 3:47 pm
Location: Malaysia
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Re: D9 Erratic Speedometer

Post by pumbaah »

mine's 2000 406D9 2.0SV Manual......much better NVH compared to the 407 (friend's) that i drove.... alas the handling of the 407 is so much better...

well you can't have em all
V6Exec
3.0 24v
Posts: 535
Joined: Mon Apr 23, 2007 11:17 pm
Location: Herts

Re: D9 Erratic Speedometer

Post by V6Exec »

Some facts & figures you may enjoy. Multiply mph by 1.61 to give you Kph :!:

Saloon
Estate
Coupe

Index of pugs

Pushing an estate up to 145 mph (235 Kph) would be "interesting" :lol:

Is the SV turbo or n/a?


By the way note the top speed of this compared to the V6 :!: :!:
Remember - it only takes a few inches of water to drown a 406 don't make the same mistake I made! The V6 Exec is no more.

406 Coupe S HDi

PP2000 clone interface
thomashb
1.6 8v
Posts: 11
Joined: Wed Jan 02, 2008 11:45 am
Location: Sydney, AUSTRALIA

Re: D9 Erratic Speedometer

Post by thomashb »

I too have an erratic speedometer (on my D8), and while all evidence points to it being a bodgy connection somewhere, I haven't sat down and investigated. My speedo will jump to 60km/hr almost immediately (when it can't be more than 15km/hr)and sits there until you actually meet its readout before rising with the road speed to 70km/hr before again sticking stubbornly to 70km/hr indefinitely. This hasn't so far been a problem because if you roll the wheels over the reflective cat-eyes on the lane markings it becomes accurate after a bit of vibrating; when this doesn't fix it a sharp slap against the plastic of the instrument cluster fixes it, or, as a last resort it sorts itself out (predictably) after you stop and get out for a minute or two.

I normally manage to sort it out quickly enough; no speeding fines as yet. The only time it has got me in trouble was with a friend of a friend who shrieked at me for accelerating to 70km/hr in 3 seconds (with a fully laden car on a road littered with speed bumps--pfft, right.) and for being a reckless driver. The best bit was that not more than an hour before this happened she had admitted to failing her driving test twice before getting her provisional license. She wouldn't listen and to this day slanders my good name by accusing me of street racing in my plain white Pug 406. I suppose this can't hurt the 406's reputation though.

Tom.
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mjb
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Location: Stoke

Re: D9 Erratic Speedometer

Post by mjb »

V6Exec wrote:Pushing an estate up to 145 mph (235 Kph) would be "interesting" :lol:
I've clocked my estate at 132mph on the GPS going (very) downhill on an autobahn with a fully loaded car. Pretty sure I've got it faster than that with just me in it, but I've not had the GPS to get an accurate speed (My speedo reads a slither under 10% high).

Wasn't that interesting tbh, the 406 is a bloody solid car and perfectly capable of cruising for hours at those speeds without any fuss :) Just wish the turbo's 5th gear was a bit longer - you hit peak power at about 100mph (4000rpm) and speed very much depends on the road's gradient when it gets over about 120.
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
thomashb
1.6 8v
Posts: 11
Joined: Wed Jan 02, 2008 11:45 am
Location: Sydney, AUSTRALIA

Re: D9 Erratic Speedometer

Post by thomashb »

mjb wrote:...but I've not had the GPS to get an accurate speed (My speedo reads a slither under 10% high).
When mine works its 10% high too. Until recently, the Australian Design Rules here have always allowed for a margin of error of 10% either above or below the actual speed. Therefore, in most situations, we'll only ever get a ticket if we're at least 10km/hr over the limit.

However now the rules have been amended and the margin for error can only be 10% high, not 10% slow. As in, if you're doing 100km/hr it is ok if the speedometer reads 110km/hr but not 90km/hr, as it used to be.

Personally I think we should police incompetence rather than speeding. Incompetent people may speed also, but they're dangerous at any speed.
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