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As soo n as I plug in a new fuse it blows it mediately with the Switch off and no key in the ignition

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  • Cars & Trucks Expert
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I need to know year make and model and which fuse blows. Would like to help but not enough info.

Posted on Apr 20, 2015

6 Suggested Answers

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Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: ignition switch fuse terminal is blowing red 40 amp fuse when i try to replace it

A fuse that is consistently blowing is telling you that there is a short in that system. Don't attempt to bridge it or use a larger amp fuse or you will have a major problem. You will need to start tracing wiring to destinations to find the short. If while moving harnesses around problem ceases to exist, look at nearby items where you are working and try to locate what was grounding. Sometimes people will stop if short disappears, leaving open the possibility of it happening again.
If you are not comfortable working with wiring, then leave it to professionals who do this every day. It's not really difficult but requires patience and a good bit of knowledge to do this right!

Posted on Apr 18, 2009

mindreader
  • 578 Answers

SOURCE: ignition fuse keeps blowing when i turn the key

It MUST be the starter relay coil - or the power wire that feeds it. Likely a short in the relay coil (AKA starter selenoid).

Posted on Oct 12, 2009

  • 1168 Answers

SOURCE: On my 1996 ford explorer

Hello Steven.

The problem will most likely be between the ignition switch and the interior fuse panel if it goes as soon as you turn key to "on".
If it were after the interior fuse panel, the fuses within the interior panel would blow.


kiltylake_200.gif

You will need to look at the wiring out of the switch for a short to ground. Perhaps the harness is rubbed through under the dash.
The gray/yellow, light green/pink and black/light green are the ones that power up when key turned on.

If it blows when the starter is tried look at the red/light blue out of the switch. This is what activates the starter circuit.
This circuit is also protected in the interior fuse panel so another reason I suspect the problem is under the dash near the ignition switch.
Check it out and let me know if you need more assistance.
Thank you for using FixYa.
KL

Posted on Feb 19, 2011

  • 14036 Answers

SOURCE: The AM2 fuse under hood keep blowing out every time i turn the ignition key switch to on position

could be short in fuel pump circuit or switch itself.look in owner manual see all circuits control by ignition switch check each one look for short in wiring circuit.

Posted on Dec 07, 2011

  • 101 Answers

SOURCE: 40 amp ignition fuse keeps blowing

U have a positive wire making ground

Posted on Jul 30, 2012

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2 Answers

93' Jeep Grand Cherokee Limited V8 keeps bowing the 40amp Ignition fuse. Checked Starter, by jumping it. Starter worked just fine. Keeps blowing fuse and leaving me right back where i started, dead...


Blowing fuses is never an easy direct fix. Its rather a hunt needs some dedication. What I try and do is Figure out what is all on this 40 amp fuse, and one at a time remove something from the system and see if it blows. The key is knowing when it will blow for these tests to work. Keep removing what ever is on the system until it stops blowing a fuse. Then figure out how to single out items on that fuse. Whatever fuse it is the problem is on its path. Check all paths that go to items if no items are easily singles out. Replace as you find ,smash, green corrosion and shady connecters. Looks for heat by finding melted plastic connecters. These are clues. If you have a volt meter, then you will find the problem a whole lot easy, by figuring out what OHMS LAw is for whatever guage wire you are working with and a rough guess on length of known path. Using this you can find smashed and corroded wires quicker. As well as finding a short to ground and even short to powers in some cases. Good luck :)

Jun 03, 2014 | Cars & Trucks

1 Answer

Ignition fuse switch keeps blowing


you have a short in that circuit chck your harness for wiring that might be exposed to ground or pinched

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Windows will not go up or down


are you saying
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the window goes up and motor fails to stop and the fuse blow?
yes?
then the limit switch in the motor is bad.
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A bad something, yes.
The fuse may be the primary fuse for the key switch. If it is, you would need to disconnect the key switch harness and check for a short to ground on each circuit.

Jun 01, 2013 | Ford Cars & Trucks

1 Answer

30 amp Starter/Ignition fuse keeps blowing when i turn the ignition key. The instrumentpanel lights are dim and then the fuse blows.


I am assuming you are talking about the circuit that powers the key switch. I'm showing a fuseable link to the starter relay instead of a fuse.
If it is the circuit that powers the switch, I would disconnect the switch and see if the fuse blows as each circuit is powered one at a time using a jumper wire. You can get 30amp circuit breakers that plug into the fuse slot to use while you are testing circuits.
You may need a repair book or shop manual to find out what is powered by that fuse since it is most everything on the car.

Mar 01, 2013 | 1997 Dodge Avenger

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My dashboard light is not working


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Jul 21, 2012 | 1999 Pontiac Sunfire

1 Answer

1997 jaguar xj6 passenger side engine bay fuse box fuse # 10 IGN control (low current) 5 amp blows as soon as turn the key then the battery drains and car dies what is happening and how do i fix it. Also...


I think your thumbler is shorting and blowing the fuse..; replace the tumbler..

your ignition is wired to the tumbler.. if thats shorting it will explain your issues.

May 24, 2010 | Jaguar XJ6 Cars & Trucks

1 Answer

30 amp ignition fuse in engine compartment blows at start


It sounds like a bad ignition switch or something is grounding out.Try to isolate the problem to key positions.See if the fuse blows when you turn the key to ACC(when your dash lights come on without starting)If the fuse does not blow then when you go to start it and it blows it could be one of many problems,the more common ones could be ignition switch,wiring,starter relay,starter soleniod,or perhaps the starter itself is shorting out,this can sometimes happen when a starter goes bad.

Apr 12, 2009 | 1996 Hyundai Accent

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