'How to Guide' How to fit a 140MPH speedo

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340cbr
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Post by 340cbr » 03 Feb 2006 10:17 pm

You can do it in 2 hours easily :wink:
| 92' 965 Turbo 16v | B204FT - 190hp |

Had: 90' 340 GL + Turbo | B18 FT | Koni's | Alpina White |

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340GLT
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Post by 340GLT » 04 Feb 2006 12:21 am

Go for it mate its dead easy to do!!!
Cheers Adam
F559 LFE - 340R 2.0 16v
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classicswede
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Post by classicswede » 04 Feb 2006 01:22 pm

I will start pulling them appart and have a go tonight hopfully.
Dai

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classicswede
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Post by classicswede » 05 Feb 2006 07:02 pm

Well I've built up a spedo head to go in.

I've used a diffent method as I did not like the idea of removing the needle. I've cut the acrylic back down so it fits in. Probably a bit harder but it works.

All I need do now is fit to the car. I'm going to do some checks on rpm/speed with the current spedo and them I can compare after.
Dai

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340GLT
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Post by 340GLT » 05 Feb 2006 11:51 pm

How did you build the speedo then without removing the needle though mate? I wouldnt of thought that is possible like how did you get the old acrylic off????
Cheers Adam
F559 LFE - 340R 2.0 16v
C208 CTR - 340 1.8 16v
D300 LBO - 360 GLT 3 Door Turbo project!! (and restoration)
F706 RBX - 350R in process!!!

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Post by classicswede » 06 Feb 2006 08:58 pm

A bit of very carfull trimming with a hacksaw! I just cut off all the bits that overhang and foul. I could whip it out and take a snap of how much needs taking off.
Dai

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classicswede
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Post by classicswede » 14 Feb 2006 08:10 pm

Fitted the spedo on the weekend only to find problems. :( The spedo is 20% out! How close to original readings were you getting.
In 4th gear at 3000rpm the original spedo read 60mph now it only reads 50mph!!!! Is the the same for everyone?

The up side to all this is Vicky now drives faster :D
Dai

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340GLT
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Post by 340GLT » 14 Feb 2006 09:40 pm

Nah that is too far out mate what exactly did you do in terms of modding?
I checked a standard speedo and a 440 one using a drill in the back and they both reard the same speed!!
Cheers Adam
F559 LFE - 340R 2.0 16v
C208 CTR - 340 1.8 16v
D300 LBO - 360 GLT 3 Door Turbo project!! (and restoration)
F706 RBX - 350R in process!!!

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340cbr
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Post by 340cbr » 14 Feb 2006 11:00 pm

Mine is correct...

Whelll it had an error of 3% in the parcial counting according to the road marks
| 92' 965 Turbo 16v | B204FT - 190hp |

Had: 90' 340 GL + Turbo | B18 FT | Koni's | Alpina White |

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Post by classicswede » 15 Feb 2006 08:33 pm

Well in that case I must have a buggered!! I've got another one that I can cut up and try. I think I will give it another go and if that fails I'll have it re calibrated.
Dai

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shimon340
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Post by shimon340 » 24 Feb 2006 05:14 pm

my dads 440 has some problems with the intrument binnacle... the fuel gauge and temp gauage have stopped working. Not sure if its the pcb that is damaged, a bad connector or if the actual gauages themselves have died.

Im getting a second binnacle and might just swop the speedo over...


however... how easy is it to get the speedo out of the binnacle... i guess from this post it isnt too tough!
Enjoy your 300s

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Chris_C
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Post by Chris_C » 24 Feb 2006 05:42 pm

Is the speedo in your Dads cable driven, or electronic? Electronic is dead easy, as I was doing it whilst sorting out my info centre, and lots of people have done the mechanical ones. Can you not just swap over the temp/fuel gauge, I seem to rememebr they are one dial. If the rev counter still works, then the dash cluster pcb should still be good
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

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shimon340
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Post by shimon340 » 27 Feb 2006 01:07 pm

hi there

Ive got a new intrument panel from a M reg 440 and am going to try this in the car to see if the gauge problem is wiring on the multiplugs or the gauges themselves which have a problem.

Im then going to swap either the temp/fuel guage unit into the older binnacle or swap the sppedo into the new one.... I went to volvo today and checked how the unit comes apart. As you say, it looks the same sort of job to swap the speedo or the fuel unit. I wonder why it failed though?? hope the new one does break again

as my electronics teacher used to say "I'll never set you a design for a circuit that smokes... if something overheats, dont just change it but find out why it broke in the first place!"

I thought the 440 had an electronic speedo... a sensor on the gearbox and then an FM circuit to power and modulate the speedo.... however, the one I removed ( M reg ) has a speedo cable just like the 340.

I guess maybe the gauge end looks like a mechanical speedp even though the cable is different? ie not a direct drive from wheel sensor to speedo??? I think the 400s have a control unit in brtween.....

was your info centre on a 480??

I'll get some pics to post here and also on volvo-480-europe.org on the forum....

cheers!

shimon
Enjoy your 300s

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Chris_C
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Post by Chris_C » 27 Feb 2006 04:33 pm

400's have both mechanical and electronic speedos, depending on year, model, wind direction, how many leaves was on the plant in the MD's office etc ;)

Yeah, I do agree, I don't see why one would fail, but after 10+ years, it's perfectly possible for a gauge (which is just an electronic coil based moving thing) to seize up or burn out. Give it ago, it's just a case of trial and error, and I don't know of anything that can over voltage in a 400 dash.

My info centres have been from both 480's and 440's (as I have caused myself smoke a few times, trying to get them to run standalone from the 400 dash circuits, and the driver chips on the LCD's have no datasheets availbale anywhere :( Still nearly done now)
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

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Post by petefarrell360 » 03 Mar 2006 12:44 am

My parents N reg 460 has a similar problem, the fuel gauge works as and when it feels like it, all the other gauges worked, until one day the rev gauge was sat at the bottom, turned the lights on and it kicked into action. It doesn't seem to have any pattern to it, you can park up with a working fuel gauge and start up with a non working gauge, so it doesn't appear to be bump related. Our Volvo mechanic had a look, but it worked when it was booked in, so he couldn't fault find on something that wasn't faulty at the time. Seems to be behaving itself lately though.

Back to the speedo mod, I'll have a very accurate speed list soon to rpm, as the 300 speedos over read by about 6 mph above 65 mph, and roughly 5mph from above 45 mph. I've had the opportunity to use a Sat Nav which has the accurate speed readout from the three satelite to calculate it. I hope to get this mod sorted soon.

Pete
G reg 360 GLT, G reg 340 GL Variomatic, plus many more..........

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