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david handa (Davehanda)
Member
Username: Davehanda

Post Number: 683
Registered: 5-2001
Posted on Wednesday, April 30, 2003 - 10:23 am:   

I got a suggestion from Ferrarilist to take off the connections to the distributors, clean and treat with Stabilant 22 contact enhancer, this fixed the problem for a gentleman with a Mondial 3.2.
TomD (Tifosi)
Advanced Member
Username: Tifosi

Post Number: 3458
Registered: 9-2001
Posted on Wednesday, April 30, 2003 - 7:18 am:   

I ususually just tap the dash and everything is ok :-) IF you need it fixed then I think the splace to go is palo alto speedo in CA. I would clean the connections first though
Dave328GTB (Hardtop)
Member
Username: Hardtop

Post Number: 525
Registered: 1-2002
Posted on Tuesday, April 29, 2003 - 9:23 pm:   

Dave,
As we speak, mine is out being repaired. This is a notorious problem with tachs associated with the 3.2 motors. Half speed is common, but they can also be off 10,20,30%. They have a mind of their own. My mechanic has sent it to a place in Albuquerque. Sorry I don't have the name/address right now.

DAve
david handa (Davehanda)
Member
Username: Davehanda

Post Number: 681
Registered: 5-2001
Posted on Tuesday, April 29, 2003 - 9:13 pm:   

BTW, if someone could direct me to the sensors and related connection points in the engine compartment; I was thinking that cleaning the grounds and connections may be helpful.
david handa (Davehanda)
Member
Username: Davehanda

Post Number: 680
Registered: 5-2001
Posted on Tuesday, April 29, 2003 - 9:09 pm:   

Well, I checked the archives which confirmed others have had the same problem, but there didn't seem to be a definitive answer to how to fix this. Here are the symptons. Started the car today after sitting for a couple days (drove 300 miles last weekend), tach reads about 1/2 what it should...very strange, goes up and down with engine speed, just reads about half what it should.

Suggestions in an old thread seemed to think that rebuilding the tach was in order....

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