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911 Mania
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Help diagnose 3 bad coils
Need your help......I have a 76 911S Targa with a stock 83 3liter (no performance upgrades) installed by the PO. I’ve driven the car 1.5k miles the last three years and have gone thru three coils and taken it to three different shops to remedy so far without a solution as my third failed a couple days ago ironically on the way to the shop to tune it to pass the smog test.
I removed the AC system, radio from the dash and amplifier and CD player from the frunk, everything else is stock. The shops have checked the ground and it appears ok. I’ve read about poor quality coils and that’s a separate issue as I believe my car is causing the coils to fail. Have any of you experienced recurring coil failures and how did you fix? Appreciate your input in advance!
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"When the debate is lost, slander becomes the tool of the losers." Socrates |
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07-12-2018, 03:04 PM
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Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,431
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Are they silver bosch coils? Wouldn't trust one right out of the box. Find a used original bosch black coil.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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07-12-2018, 03:34 PM
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911 Mania
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Quote:
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"When the debate is lost, slander becomes the tool of the losers." Socrates |
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07-12-2018, 05:29 PM
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Join Date: Feb 2006
Location: Ontario Canada
Posts: 2,947
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Yup its the coils plain and simple. I found sn old one st hershey and been fine for 12 yesrs
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07-12-2018, 05:35 PM
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What those guys said... I have a nice shiny new silver coil thats nothing more than a paper weight. expensive lesson.
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Chris '75 911s Targa |
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07-12-2018, 05:41 PM
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People seem to like the Parts klassik CIS replacement coil.
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07-12-2018, 05:49 PM
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Get off my lawn!
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Same here. It is very annoying and just a total shame that if we go to the dealer, order a coil in a Porsche box right from Porsche, it is a piece of junk, and a used 30 year old coil is better right from a dismantler.
That should embarrass Porsche.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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07-12-2018, 05:49 PM
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Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,431
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A good alternative is an MSD 8222 blaster coil. Works fine with the stock bosch 3 and 6 pin boxes. Just heat the big decal and peel it off.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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07-12-2018, 07:31 PM
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911 Mania
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Thank you all for your input. I’m flabbergasted that three brand new coils have failed and the old black Bosch work. I’ll likely try the MSD 8222 blaster as it will be easier to find than an original black Bosch.
Thx again!
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"When the debate is lost, slander becomes the tool of the losers." Socrates |
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07-12-2018, 10:09 PM
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Join Date: Feb 2006
Location: Ontario Canada
Posts: 2,947
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Quote:
didn't think of peeling off the sticker.
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1976 Yamaha XS360 ( Beats Walkin') 1978 911 SC Targa ( Yamaha Support Vehicle ) 2006 Audi A4 2.0T (Porsche Support Vehicle ) 2014 Audi A4 2.0T Technik (Audi Support Vehicle) |
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07-13-2018, 06:27 AM
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1975 Porsche 911S
Carrera
