75 TS Tacho problems

[redsky]

G'day all,
I'm looking for a fix to a tacho problem, it indicates about 1200rpm @ 100kph and never seems to rise above 2000 rpm. I tried a forum search for answers to no avail.

Any assistance as to the cause and solution would be greatly appreciated. It would definately be handy to know how many revs I'm giving it when taking it for a run.

Cheers
Darren

[Mat Francis]

There is a variable resistor that will cause this problem. I THINK I have the link saved to a thread about it on my home computer, I'll be home in a few days. If you are in a hurry, have a good look on alfabb.

If this is the cause, you basically need to remove the instrument cluster, and while the car is running, adjust the resistor so the tacho reads correctly.

[redsky]

Thanks Mat,

That gives me somewhere to start. i wont get to look at it until the W/E at the earliest so a link would be handy if you have one, especially if it covers pulling out the instrament cluster.

cheers.

Darren

[Mat Francis]

You're in luck! Here's a few to get you started

http://www.alfabb.com/bb/forums/milano-75-1987-1989/31358-tachometer-issue-dash-grounds.html

http://www.alfabb.com/bb/forums/milano-75-1987-1989/6911-tach-reading-low.html

http://hades.myweb.hinet.net/clone/tacho.htm

Don't have a link for taking the cluster out, you're best bet is to download the owners manual from Craig's place and follow that

http://www.users.on.net/~craigf/



It's been a while since I did it, but the main thing I remember is that you have to remove a fair bit of stuff to get it out, most of which is highly breakable! The right tools and a lot of patience is needed.

Good luck

[redsky]

Thanks Mat for the link.
Wow, that had to be one of the easiest fixes i've done in ages. Less tha a dozen easy to get at screws & the cluster was out. One well placed drill hole, a screw driver & its all done. I didn't have another tacho but it was easy to use an online driveline calulator to work out how many RPM i was diong in 5th @ a given speed.  The fine tuning was easy to do out on the road.

cheers
Darren