Anybudy got a pic of the coil pack relocation on a 3800 SC series II?It's current location is right next to the trunk hinge, and it's in the way?I realley don't want to cut and splice any wires.A pic would be helpfull.
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09:25 PM
PFF
System Bot
$Rich$ Member
Posts: 14575 From: Sioux Falls SD Registered: Dec 2002
I put mine down below the gas tank and ran them that way for over a year. Then when I moved my battery to the front, I moved then to where the battery used to sit. I like both spots but having them where the battery sat makes things easier when you need to get to them.
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11:30 PM
darkhorizon Member
Posts: 12279 From: Flint Michigan Registered: Jan 2006
Only ICM failure I have ever had was on my manual swap with the coils mounted low by the tank.
My theory is, one good puddle and those things get nearly soaked in water. While the battery tray/decklid hinge is barely a better option, I prefer it just because I know they will never get totally owned by huge water events.
What is wrong with the trunk wall above the rear valve cover? Not enough space?
thats where I have mine, works great, decent amount of room (fairly hard to get at with the motor in there, but its not impossible), IMO its the second driest spot on the fiero.
Are there any other options besides the firewall, battery tray, down low and stock? I was gonna ask about a trunk mount and realized plug wires would be stupid long.
[This message has been edited by goatnipples2002 (edited 09-25-2007).]
I mounted my DIS coil pack for the 3.4L Camaro engine swap on the trunk wall. I reused the stock Fiero wires as they were just long enough. I realize this is another animal because of the supercharger. Can you route the wires close to the SC or do you need to go around the whole engine bay?
Only ICM failure I have ever had was on my manual swap with the coils mounted low by the tank.
My theory is, one good puddle and those things get nearly soaked in water. While the battery tray/decklid hinge is barely a better option, I prefer it just because I know they will never get totally owned by huge water events.
I can tell you that water getting on them does not effect them in anyway. Well unless you are missing the rubber groumets that go over the prongs and water gets in. I ran my coils for over a year mounted under the gas tank and drove thru many of bad storms with tons of water on the road. I never had a single issue with the car stumbling when the coils got wet from driving during the storms. I use my Fiero as a DD making 140 miles round trips to work so the coils mounted there got put thru the test. This included anything from water soaking them to tire scraps hitting them, ect. The only downside to mounting the coils by the tank is if you need to work on them, then you have to put the ca on stands and get under it.
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01:36 AM
darkhorizon Member
Posts: 12279 From: Flint Michigan Registered: Jan 2006
I can tell you that water getting on them does not effect them in anyway. Well unless you are missing the rubber groumets that go over the prongs and water gets in. I ran my coils for over a year mounted under the gas tank and drove thru many of bad storms with tons of water on the road. I never had a single issue with the car stumbling when the coils got wet from driving during the storms. I use my Fiero as a DD making 140 miles round trips to work so the coils mounted there got put thru the test. This included anything from water soaking them to tire scraps hitting them, ect. The only downside to mounting the coils by the tank is if you need to work on them, then you have to put the ca on stands and get under it.
Thats good to know, maybe I will give it another try. The spark setup on that car never seemed to be right anyway...
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10:33 AM
James Bond 007 Member
Posts: 8872 From: California.U.S.A. Registered: Dec 2002
What is wrong with the trunk wall above the rear valve cover? Not enough space?
The wireing harness is short and theres a steel bracket above the right side of the valve cover (part of the bracket is wear the coil packs were mounted befor).There isnt much space,but It might get in the way,when changeing plugs.Might work but the wireing harness would have to be lengthened.
So did you guys,cut and lengthen the wireing harness to the coil pack? sounds like a big job?
Only ICM failure I have ever had was on my manual swap with the coils mounted low by the tank.
Our OBD2 car with the coils mounted in that tank area has had 1 ICM failure and 1 coil failure so far. I don't know if its related or just ironic. I haven't had a problem with them in the battery location and they get some wetness there, though not the abuse as under I'd think. I know others have zero problems, but I was just throwing that out there.
I have also seen the coils mounted on top of the auto trans right next to the driver side strut tower.
[This message has been edited by Jncomutt (edited 09-25-2007).]
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12:46 PM
darkhorizon Member
Posts: 12279 From: Flint Michigan Registered: Jan 2006
Any location that is not very close to the front passenger side of the motor presents wiring length issues, so mounting them over by the transmission or rear fire wall all require the lengthening of 9 wires.
I think that the tank mounting area is not the best place out of any of them as far as reliablity is concerned just from my experience, yet it does offer the "coolest" by hiding all the wires and coils down there.
So did you guys,cut and lengthen the wireing harness to the coil pack? sounds like a big job?
On my first swap, I placed the coils under the DB mount and that required me to cut/solder the wires back together. It wasnt that big of a job but only cut one wire/solder it at a time so you dont mix them up. When mounting them in the battery area or by the tank, the stock harness is long enough to do the job.
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06:10 PM
eph_kay Member
Posts: 943 From: Independence, MO Registered: Apr 2006
I mounted mine on the trunk wall after having my harness made for it to be where the battery was, for the money I saved not haveing to buy new wires I was able to mismatch the stock wires and put the coil pack right behind the trunk light, and the time it took lengthening the 13 or so wires wasn't that bad....