"sticky"speedo

[andy heeks]

Hi Guys
my speedo sticks at 40mph after just pulling away,and stays at 40 unless i give the panel a sharp tap.This fault is intermittant but is getting worse and is happening more often.Any suggestions
thanks

[ace]

hi

this is a common problem and one which I need to correct on my pug , there are some threads on here which cover this problem but I will try and help

1) check the back of the instrument panel for cracked or dry soldered joints, good first option if you are confident with a soldering iron.

2)There is a black ecu unit behind the glove box (size of packet of fags) some 406's may not have these so go to your local pug main dealer and they can take your vin number to confirm if your pug was fitted with one.

3)The speedometer transducer unit which is fitted just above the drive shaft on the gear box

hope this helps will be sorting mine out next week and will post my results

[jameslxdt]

i have also seen on occasions the black backing with the numbers comes away from the base of the speedo and fouls the needle so the speedo gets stuck

[Tiny Tim]

Mine's been very intermitant recently... hardly working ever but once in a while it'll come to life for a quick dance and die again.

I changed a few of the dash bulbs last night and think I must have disturbed the problem area as it was working ALL the way to work this morning... interesting... im going for a dodgy connector wiring.

[michaeljclark]

Twas happening on mine too

A new dash unit (from scappy at a cost of £35) cured the problem good and proper!! - took me about 15 mins to remove old old one and fit new one

Mike

[Tiny Tim]

I spoke too soon... gone again!


On that note Mike, is the mileage recorded by ECU or dash clock unit? I just dont like the idea of having to pay out to get the mileage re-done.

[andy heeks]

apparently Eurocarparts do a modulator box (fag packet size) part no 1929s that cures the problem,costs about £40.this fits under the glove box.

[Tiny Tim]

apparently Eurocarparts do a modulator box (fag packet size) part no 1929s that cures the problem,costs about £40.this fits under the glove box.

I had a look on their site to see if they sold them but couldnt see anything - that part number doesnt look like an ECP part number either.

Hang fire, i'll give the local branch a call.

[Tiny Tim]

1929SJ - thats the stealership part number.

[Tiny Tim]

Right, it is listed on ECP's systems, part number 494735010 BUT there is no stock anywhere in the company and would be a special order (and thus would probably take a little while to come in). Price quoted at £35.69. iirc thats around what the stealerships charge anyway.

[michaeljclark]

On that note Mike, is the mileage recorded by ECU or dash clock unit? I just dont like the idea of having to pay out to get the mileage re-done.

I've now got the milage of the donor motor!!! (about 7k less)

Sorry for the delayed reply - not been around for a bit

Mike

[Tiny Tim]

It is pablo... that who;e plastic section will include the two vents in the centre and the one on the right of the dash. Prise it first from where the two centre evnts are then the other side.

[Tiny Tim]

Ive given in... just ordered the old 1929SJ which should come tomorrow. Wish me luck!

[steve_earwig]

Pug trialed mine by substitution. It was duff of course. I'm thinking that a big part of maintaining these ever-so-bleedin'-complex cars is knowing when to stop guessing and call in the experts. This doesn't necessarily mean Pug, that's like going to your GP for heart surgery.

[Tiny Tim]

dont you mean a surgeon with a cold?