grrrrrrrr stupid speedo

kirsty_2003 · Post by **kirsty_2003** » Mon Nov 17, 2003 4:31 pm

help my speedo doesn't work.

it worked @ 1st then stopped. so my dad put in a different speedo coz he and my boyfriend work in a garage called The Volvo Den. this worked at first but conked out again. he changed the speedo just to be sure he hadnt put in another duff one but the 3rd one did the same but the rev counter also stopped working.

no one has a clue what was wrong with it.
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also sometimes my petrol tank pressurises and when u take the cap of it hisses.
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has any one got any ideas????????????? i only brought it last week

oh and by the way it was standing in a garage for two years not being run before i got it of my dads m8

pol · Post by **pol** » Mon Nov 17, 2003 5:47 pm

Hi kirsti,

Mine always hisses when you take the petrol cap off. I don't reckon it's a problem as it's always happened on my other cars...

Cant help with the speedo though...

pol

Ben Harris · Post by **Ben Harris** » Mon Nov 17, 2003 7:44 pm

Does the infocentre work? The 480's speedo is electronic, rather than mechanical, so if it doesn't, then it sounds like it could be sensor on the driveshaft, or a connection between it and the speedo.

Oh, and mine does the hiss thing too!

Ben.

chris1roll · Post by **chris1roll** » Mon Nov 17, 2003 9:10 pm

are tehy changing the whole speedo housing, inc the rev counter etc, or just the speedo itself?
It is nearly aleays dry solder joints, there is a high chance that second hand ones will be just as bad, as my mums car had a new one fitted before she got it, and I just had to resolder it 30,000 miles later. so 480 speedos could have been failing when the cars were just 3 years old!!!

kirsty_2003 · Post by **kirsty_2003** » Tue Nov 18, 2003 8:29 am

yeah ive replaced the whole thing. i got one that works now, put it in after i replaced the sensor. seems to be ok...... for now.. other speedos stopped working after about 30 miles.

volvofox · Post by **volvofox** » Wed Nov 19, 2003 11:15 am

were youre from ? maybae a fellow clubmember can help. I can too.

Mostly you have to open the clockhouse and take out the biggest print, to reweld the 18 pinns connector pins welds.

Other wise the wire between speedo and sensor (the wrapped one) is very brittle .. there are people who have made a new wire.

And there is always green, gray or black oxidation in the plugs, clean it out with contactspray and a toothpick.

Luck
JPF

johnd · Post by **johnd** » Wed Nov 19, 2003 5:09 pm

As the other guys say.....you could do with resoldering all the pin attachment points on the rear of the unit...both sides.

My rev counter works on/off and I have been advised to check the connections on the CEM......inside the passenger footwell on a UK car.

Ive done both (on my previous 480) so if you want any info. just ask.

John.....trying to find time just to do these sorts of jobs!!