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2G Continuously Blowing 30A Ignition Switch Fuse

Posted by Adrian216, Feb 27, 2020

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  1. Adrian216

    Adrian216 Probationary Member

    Joined Feb 24, 2020
    Cleveland, Ohio
    Hey guys I’m a new to the site and I picked up a 96 5spd GSX a few weeks ago and I’ve been reading up on the problems I’ve been having for awhile now so I decided to make my own thread.

    I am fairly mechanically inclined, but I have a lot to learn and I hope you guys can give me some valuable insight.

    So first off, the car struggles to start, it takes about 5-10 cranks while blipping the gas until she’ll come alive. Once she’s warmed up, she’ll start first crank no problem.

    The main problem is when I put load on the car, anything about 3500rpm or so and up, the car breaks up, occasionally backfires then usually stalls and blows the 30A Ignition switch fuse under the hood.

    I am able to put put the car around without blowing any fuses as long as I keep it under 3k, and I have no issues revving the car up at standstill with no load.

    Once the first initial fuse blows, the next fuses continue to blow more frequently with less load on the car.

    At first, to me this felt like some type of spark or lack of fuel problem. Possibly the car isn’t getting enough fuel, and when hits boost maybe the car is leaning out?? Or possibly there was a short with the spark wires causing it to misfire and run poorly, which I've read in another thread. So I went on to order and swap the plugs, wires and coil packs.

    I’ve so far replaced the spark plugs, wires and ignition coils with Ngk bpr6es plugs, Taylor 8.2mm wires, and two ebay coil pack replacements.

    After swapping the plugs and wires, the car seems to run somewhat smoother... but I’m still experiencing the same issues.

    I’ve read that people first recommend removing the sunroof and power seat fuses. I’ve already tried removing both of those, and the car still blows the fuse.

    **UPDATE** Also something to note, my oil pressure sensor has never worked, neither has the horn, and my right rear turn signal blinks as if there is a blown light, but there isn't any blown lights and I just noticed the light blinks very dim, as if there is low voltage. So I am about to look into the sensor then read into how to use a multi-meter... LOL

    My next plan of action will be to follow all the aftermarket wiring from the push button start and the gauges to make sure everything is correct, then start pulling fuse by fuse and burning through the twenty 30 amp fuses I just pocketed from my local junkyard.

    Here is a list of everything I know of that has been done to the car:

    Push button ignition
    Manual boost controller knob - 12 psi low - 20 psi
    high- havent f***ed with high
    Garret m24 AR .48
    Auto meter boost gauge
    Auto meter pyrometer header temp gauge
    Short throw kit
    New clutch
    Unlabeled / no serial computer
    Apexi catback
    Ngk bpr6es plugs gapped at .28 I believe
    Taylor 8.2mm plug wires
    Receipts for 255 walbro - haven’t checked tho
    Last edited: Feb 27, 2020

    312  16

    1996 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
  2. ist dwa

    ist dwa Proven Member

    Joined Nov 5, 2009
    Centerville, Ohio
    Push button ignition......ta daaa, trace that bi*** and you'll find your problem.
    spyderdrifter and Santi714 like this.
  3. JPenny

    JPenny Proven Member

    Joined Feb 24, 2016
    Corpus Christi, Texas
    I would have to agree I would start back tracking all the wiring and see what you can find..honestly to me it seems maybe two separate problems but possible your losing ignition or pulling it elsewhere from the wiring of push start?

    132  5

    1996 Mitsubishi Eclipse GST
    manual · 2G DSM

    Street Build 2K  4

    1997 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
  4. ThunderChild

    ThunderChild Supporting VIP

    Joined Jan 5, 2012
    Rathdrum, Idaho
    It's highly possible that the push button ignition is the main culprit, but it also seems like you may have some grounds that need attention, specifically some under hood grounds. I'd start looking for everything that requires a good chassis ground, clean, reattach and paint over again. I personally added extra grounds on my car as the existing ones were few and far between IMHO.

    Street Build 614  3

    1990 Plymouth Laser N/T
    fwd · manual · 1G DSM

    637  8

    1987 Toyota Pickup/Hilux
    awd · manual · Misc Vehicles

    Street Build 1K  7

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    2K  0

    1992 Eagle Talon TSi AWD
    manual · 1G DSM

    Street Build 3K  10

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
  5. spyderdrifter

    spyderdrifter Freelancer

    Joined Jul 11, 2009
    Fountain, Colorado
    As stated, target that push button setup. These cars never had it OEM, and anything people throw in them to add this system is just junk. Constantly blowing fuses like that, to me suggests a short to power issue. Sounds like there's just to much power being sent through the fuse and causes the short. Could be wrong, but might not be.

    1K  2

    1996 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    2K  3

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    2K  5

    1999 Mitsubishi Eclipse N/T
    automatic · 2G DSM
  6. Adrian216

    Adrian216 Probationary Member

    Joined Feb 24, 2020
    Cleveland, Ohio
    Thanks for all your feedback guys.

    Finally...!!!! After weeks of tearing apart my entire car it turns out I had two shorts!! The first short was from the hot wire connected to the starter and my push button starter switch .. BINGO, it was grounding out underneath my metal battery bracket. Very dumb location for a hot wire.

    The second short I can't believe I found, it was one strand of a hot wire from the wiring underneath my inter cooler piping next to the intake filter that was rubbing against the frame when i would drive the car or hit bumps. This wire was getting extremely hot and melted a few of the surrounding wires causing some havoc. After tracing and soldering the remaining connections, I've since drove 75 miles with no fuse issues and I've done numerous pulls!!! WOO!!

    Just when I thought everything was perfect... Now I've been welcomed with the amazing sound of something knocking / ticking in the engine! Glad to be apart of the DSM World!

    - Here's a video of the ticking noise I'm about to make a new thread about

    312  16

    1996 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
  7. ist dwa

    ist dwa Proven Member

    Joined Nov 5, 2009
    Centerville, Ohio
    Thanks for playing.

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