Whining from MSD TFI Coil ????

Chevyguy · 10-13-2001, 08:13 AM

Hey SRV-1 you hit it right on the head, it totally sounded like it came from the dash initially, like a radio interference noise. With the hood open I traced it to the coil itself.

Where is/would the capacitor located? I remember one piggybacked on the coil power feed on my Laguna, first year for factory HEI. Other year chevys don't have that capacitor so I removed it, no noise etc.

Seems to me the noise could be caused by the TFI system electonic harmonics which could be fixed by the capacitor. My HEI system possibly has higher spark energy but no coil wire and different type inductive spark control made by MSD! and the previously mentioned ACCELL super coil.

Looks like the coil is going back in today. Time to start looking for a capacitor

------------------
Frank W
90 5.0 LX coupe Daily driver. K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch, FMS blue wires Energy Suspension end links, MAC 2.5" cat back FMS aluminum driveshaft, MSD blaster coil, MAC shifter
88 Notch 2.3L FOR SALE! My two Notchbacks

74 Chevy Laguna Type S-3 305 Finally fixed getting a 454 to put in garage
<A HREF="http://www.chevellepages.com/f

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10-13-2001, 08:13 AM	#13
Chevyguy Backyard Mechanic/Chemist Join Date: Feb 2001 Location: Acton MA USA Posts: 435	Hey SRV-1 you hit it right on the head, it totally sounded like it came from the dash initially, like a radio interference noise. With the hood open I traced it to the coil itself. Where is/would the capacitor located? I remember one piggybacked on the coil power feed on my Laguna, first year for factory HEI. Other year chevys don't have that capacitor so I removed it, no noise etc. Seems to me the noise could be caused by the TFI system electonic harmonics which could be fixed by the capacitor. My HEI system possibly has higher spark energy but no coil wire and different type inductive spark control made by MSD! and the previously mentioned ACCELL super coil. Looks like the coil is going back in today. Time to start looking for a capacitor ------------------ Frank W 90 5.0 LX coupe Daily driver. K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch, FMS blue wires Energy Suspension end links, MAC 2.5" cat back FMS aluminum driveshaft, MSD blaster coil, MAC shifter 88 Notch 2.3L FOR SALE! My two Notchbacks 74 Chevy Laguna Type S-3 305 Finally fixed getting a 454 to put in garage <A HREF="http://www.chevellepages.com/f