blowing coilpacks? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

roboticnissan · 06-05-2011, 12:59 AM

Just blew two coilpacks in a week
I'm.thinking wiring problems but what kind of wiring problems would POP a coilpack like a fuse.

kevmeistah21 · 06-05-2011, 01:06 AM

I had this problem but i think you have a different problem then mine.. My spring inside the coil pack was compressed so it wasn't or barely touching the spark plug at all, which caused it to pop. Well, atleast i think so.. Cause when i swapped it for a new one and it worked perfectly fine when i made sure the spring was actually touching the plug itself.

Shit also caused my spark plug threads to strip, i had to re-thread the head for that cylinder..

JDMRIDDAZ · 06-05-2011, 06:12 AM

loose ground

Bbsalexaz · 06-05-2011, 07:02 AM

Mods? I assume sr. :P

The coils ground through the ecu right? I dont think the ecu could just be blowing up coil packs for fun. Its POSSIBLE, just not PROBABLE.

Whats more likely is the PTU, also known as an ignition control module, sending faulty signals to the coil packs thus the coils failing... That is POSSIBLE and PROBABLE.

But that might not be the issue, could be bad wiring, something melted, common ground arching out to the signal wire. etc.

Let us know what your working with so we can better diagnose whats going on...

roboticnissan · 06-05-2011, 12:35 PM

Well its on my miata and the miata forums are full of jackasses. There are a few smarties here.

You really think just a loose ground could POP a coilpack? I'm thinking more along the lines of a power wire grounding out.....but even that seems unlikely to me.

JDMRIDDAZ · 06-06-2011, 09:55 AM

it could be either or
but the ground can cause this
the sr20det has a ground loop on the coilpack harness on the back of engine
mae sure its grounded properly

camaro379ss · 06-06-2011, 12:03 PM

Did it blow 2 coilpacks in different spots or 2 coilpacks in the same location? makes a difference...

s14unimog · 06-07-2011, 02:17 PM

I used to do this when I ran the coil pack cover. I've since dumped that in favor for a Phase2 grounding plate and haven't had an issue. It gets pretty hot under that cover.

06-05-2011, 12:59 AM	#1
roboticnissan Nissanaholic! Join Date: Mar 2007 Location: SOCAL/NORCAL Age: 35 Posts: 1,867 Trader Rating: (12) Feedback Score: 12 reviews	blowing coilpacks? Just blew two coilpacks in a week I'm.thinking wiring problems but what kind of wiring problems would POP a coilpack like a fuse. __________________

06-05-2011, 01:06 AM	#2
kevmeistah21 Post Whore! Join Date: Dec 2007 Location: Pasadena, CA Age: 33 Posts: 2,658 Trader Rating: (68) Feedback Score: 68 reviews	I had this problem but i think you have a different problem then mine.. My spring inside the coil pack was compressed so it wasn't or barely touching the spark plug at all, which caused it to pop. Well, atleast i think so.. Cause when i swapped it for a new one and it worked perfectly fine when i made sure the spring was actually touching the plug itself. Shit also caused my spark plug threads to strip, i had to re-thread the head for that cylinder.. __________________ Late Night Crew... #02 <3 Bought anything from me? Please leave me a review! http://zilvia.net/f/private-sellers/...meistah21.html

06-05-2011, 06:12 AM	#3
JDMRIDDAZ Zilvia Junkie Join Date: Sep 2007 Location: ｆォリダ Age: 47 Posts: 440 Trader Rating: (3) Feedback Score: 3 reviews	loose ground __________________ シチサｎ w/ka20det:in progress シチサｎw/sr20det:stolen

06-05-2011, 07:02 AM	#4
Bbsalexaz Zilvia Member Join Date: Aug 2010 Location: Bay Area, CA Posts: 191 Trader Rating: (0) Feedback Score: 0 reviews	Mods? I assume sr. :P The coils ground through the ecu right? I dont think the ecu could just be blowing up coil packs for fun. Its POSSIBLE, just not PROBABLE. Whats more likely is the PTU, also known as an ignition control module, sending faulty signals to the coil packs thus the coils failing... That is POSSIBLE and PROBABLE. But that might not be the issue, could be bad wiring, something melted, common ground arching out to the signal wire. etc. Let us know what your working with so we can better diagnose whats going on... __________________ 0 horsepowers.· \ ' ' ·.1000 horsepowers

06-05-2011, 12:35 PM	#5
roboticnissan Nissanaholic! Join Date: Mar 2007 Location: SOCAL/NORCAL Age: 35 Posts: 1,867 Trader Rating: (12) Feedback Score: 12 reviews	Well its on my miata and the miata forums are full of jackasses. There are a few smarties here. You really think just a loose ground could POP a coilpack? I'm thinking more along the lines of a power wire grounding out.....but even that seems unlikely to me. __________________

06-06-2011, 09:55 AM	#6
JDMRIDDAZ Zilvia Junkie Join Date: Sep 2007 Location: ｆォリダ Age: 47 Posts: 440 Trader Rating: (3) Feedback Score: 3 reviews	it could be either or but the ground can cause this the sr20det has a ground loop on the coilpack harness on the back of engine mae sure its grounded properly __________________ シチサｎ w/ka20det:in progress シチサｎw/sr20det:stolen

06-06-2011, 12:03 PM	#7
camaro379ss Zilvia Junkie Join Date: Mar 2011 Location: Indianapolis, IN Posts: 363 Trader Rating: (4) Feedback Score: 4 reviews	Did it blow 2 coilpacks in different spots or 2 coilpacks in the same location? makes a difference... __________________ 1991 Nissan B13 Sentra sr20det 300whp/1991 Nissan S13 240sx sr20det ~260whp

06-07-2011, 02:17 PM	#8
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 37 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	I used to do this when I ran the coil pack cover. I've since dumped that in favor for a Phase2 grounding plate and haven't had an issue. It gets pretty hot under that cover. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson