Tach needle fluttering after Recent pertronix ignitor module 1761 and 1.5 coil swap

[jalexquijano]

I recently installed a 1761 Pertronix module and 1.5 coil with ballast resistor in my 1972 240z. I also decided to change the 4 year old battery with a Brand new 500 amp battery. After all of these changes i am now noticing that the tach needle is fluttering when the car is sitting on idle. Is this normal? If not, how can it be solved?

[Jesse C.]

 

[jalexquijano]

The weird thing is that the tach needle only flutters at idle when the car has been warmed and driven. At initial warm up it remains quite steady. Any other remedy?

[jalexquijano]

On ‎7‎/‎30‎/‎2018 at 1:09 PM, Jesse C. said:

 

Problem solved. It was the Pertronix Ignitor Module. I had one spare lying around, replaced it and it no longer seems to affect the tach needle. Is this common with Pertronix ignitor?

[banzai510(hainz)]

maybe the connection just was better when you installed the other one

 

I run 3 Pertronix on my 3 datsuns. Well 2 now sold one and had no proplems with them besides tape might wear out or magnet ring magnets stuck to the dsit shaft cause tape is worn .  But eleltrically have been fine but I dont run a tach so cant help you there.

 

 

good to ck bushing play every year or so(distributor wiggle) from a wron bushing will cause high RPM cut out. I just plain wear out my distributors or the vac adv goes to hell or springs break.

Edited August 3, 2018 by banzai510(hainz)

[jalexquijano]

OK