: 98 deville northstar msd coil packs?

03-18-10, 09:31 PM
looking for some new coil packs and i found some msds for the northstar any good?.... http://www.shopatron.com/products/productdetail/part_number=8224/424. anyone ever try these or have them on there northstar now? any hp increase or a bunch of bs?

03-18-10, 09:47 PM
I can't imagine any HP increase from these. My recommendation: save your money.

03-18-10, 09:49 PM
All the coil does is increase the voltage to fire the plug. I doubt you'd see any difference from one to another. Take yours off and paint them red if you want some bling. That's about all you're getting for $50.

03-18-10, 09:53 PM
sooo get some duralast coil packs and call it a day since the msd prolly does nothing better?

03-18-10, 10:09 PM
Why are you replacing the coils? Is it misfiring?

03-18-10, 10:55 PM
i get a p0300 every once in a blue moon changed the plugs but never the packs

03-18-10, 10:58 PM
I'd suspect plugs or wires before the coils unless they are recent replacements.

03-18-10, 11:03 PM
i dont even know i gotta take a look at it good one day now thats its nice out these cars i swear are a living pita......

03-19-10, 10:29 AM
IF you're into the tuneup mode, prior advice on MSD coils is correct - you will see no change in the engine's performance other than bling, and don't forget that you need four coils, so that's about $200 from your site address. If I were to spend that kind of $$$ on coils the Standard Blue Streak units would be the way to go, otherwise, local junkyard.

Remove the plug wires, coil pack and ICM. Clean everything with Brakleen or choke cleaner and blow it all dry - be careful not to soak the ICM......check the ICM ground connection: that's critical. Check the coil connector pins at the ICM.

Replace the plugs with AC Delco Platinum #41-950's. Magic aftermarket plugs do NOT make your Northstar happy. Torque the plugs to 13 ft/lb with a small dab of anti-seize on the first 3 threads. Replace the wires with a new AC Delco set. They are good, high performance wire and all the boots and coil connectors fit properly.


Use the diagrams for proper plug wire connection: it's critical also. Click on the pic to enlarge.

03-19-10, 11:23 PM
thanks sub and oopsss about the spark plugs you see what had happened was when i first got the car i didnt know anything about it so i sorta got some e3 fire spark plugs for it.... i feel like dummy lol

03-19-10, 11:37 PM
That could be your misfire problem right there. I doubt there is anything wrong with your coils. Get rid of those plugs and use AC-Delco 41-950 and replace the wires if they have 100k on them.

03-19-10, 11:40 PM
i think them junky chinese plugs have a 100k warranty so ill tell them my motor is misfiring get my money back then buy the ac delcos and have some left over money with a better running motor = ) hehehe

03-20-10, 12:01 AM
The Delco's will be about $50