I finally got around to replacing the magnetic pickup, distributor cap, rotor on my 80 Efi fiat. Now she runs very well though the tach jumps about 250 rpms at most rpms. I bought a vacuum advance though did not install as it was a little tough to get at. I will say the cover for the AFM is not well sealed. Also this was not a problem prior to it dying a month ago.
Any ideas?
Jumpy tach
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ga.spyder
- Posts: 3478
- Joined: Tue Nov 06, 2007 7:19 pm
- Your car is a: 1982 Spider 2000
- Location: Blairsville ,Ga.
Re: Jumpy tach
Check the connections at the coil,that is the culprit a lot of times with tach jumping.Make sure those wires for the new mag pickup arent rubbing in the dizz.I almost ruined one like that.
Craig Nelson
1982 Spider 2000...pride and joy
1981 Fiat X1/9..gone but not forgotten
1976 124 Spider..the self-healer
2001 BMW 328ci daily driver and track car
Fling It Around Turns !
1982 Spider 2000...pride and joy
1981 Fiat X1/9..gone but not forgotten
1976 124 Spider..the self-healer
2001 BMW 328ci daily driver and track car
Fling It Around Turns !
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124JOE
- Posts: 3141
- Joined: Fri Jun 24, 2011 7:11 pm
- Your car is a: 1978 124 fiat spider sport 1800
- Location: SO. WI
Re: Jumpy tach
the tach gets signal from the NEG side of the coil
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
ul1joe@yahoo.com 124joe@gmail.com