Question about 1998 Chevrolet Blazer

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The big 40A fuse under the hood keeps blowing when

The big 40A fuse in fuse box under the hood keeps blowing when i turn ignition

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  • Anonymous Mar 18, 2014

    what causes the ignition fuse to keep burning or blowing

  • Anonymous Mar 21, 2014

    want to split and replace top half of the under hood fuse box on a 2005 cobalt

  • Anonymous Mar 23, 2014

    the ignition c fuse under the hood keeps blowing

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  • 366 Answers

Youll have to probe that elec.circuit to find what is causing your short

Posted on Feb 26, 2009

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I have a 2004 chevy surban that keeps blowing the ignition fuse what can cause this


You have a direct short to ground on that power feed circuit . You need to find a power distribution diagram to see what all gets is power from that fuse . Isolate the circuits till the fuse doesn't blow any more , then trace out that circuit that blows the fuse .

Which Ignition fuse ? Which fuse box is it in ? under hood , passenger compartment ?
IGN A
40A
Ignition Switch RUN, START, RUN/START/ACCY
IGN B
40A
Ignition Switch RUN/ACC, RUN/START
Could be ignition switch problem , Chevy has had problems with them .

Jul 06, 2016 | Cars & Trucks

1 Answer

Why does my 40a ignition fuse keep blowing out when I try to start my car


which engine.?
which fuse box.?
what is exact name. of fuse. just "ignition"
so its really a Chevy S10.
2.2 L I4
4.3 L V6 my guess, is these 2 engines,
I ask that because all engine have there own injection systems
and there own spark systems and wired different and fused different.
so I can not help you , lacking engine, factsa.

In 1996, Isuzu replaced its Pick Up with a version of the Louisiana-built Chevrolet S-10,

Mar 14, 2015 | 1998 Isuzu Hombre

1 Answer

Remotekey will not work. dashboard indication not lit.only powere steering light no clock or temperature lit. all fuses ok


A fuse can blow but physically look intact. How did you verify the fuses were ok? It could be that the 40A fuse 8 in the engine compartment fuse box has blown.
This supplies multiple circuits which are themselves individually fused in the consumer box inside the car.
The smaller 15A fuse 15 in the consumer box would normally blow under these circumstances but f the horn does not work as well and there are other things you have not listed that do not work like brake lights or headlights, it is definitely the under bonnet fusebox where the problem lies.
Good luck.

Jul 28, 2014 | 2007 Suzuki Swift 1.3

1 Answer

Alternator fuse location


the huge fuses are under the hood,, in the big fuse box.
there is fuse 2 underdash that if blown the charge lamp will be dead key on. (self test key on)
in the big fuse box under the hood.
the fsm is here, chapter 16 is electrics,
http://hondatech.info/downloads/Auto/Manuals/Accord/

16-31 shows fuse numbers
16-94 is the alternator page.

if the fuse 15 blows, that kill everything, alt shorted. 60amp fuse

Nov 15, 2013 | 1991 Honda Accord

2 Answers

Ignition fuse keeps blowing


solenoid wire to starter may be shorted at starter..

Jan 21, 2013 | 1999 GMC Suburban

1 Answer

I have a 2003 mitsubishi lancer. Everytime I try to turn my key from the ignition to start my car my fuse 4 (40A) blows up I replaced it twice but the new fuse just keeps blowing up:/ what's going on?...


There is a major electrical fault that keeps blowing the fuse. The fuse protects that part of the electrical circuit, 40 amps is heavy electrical circuit, it it wasn't protected by a fuse it car could catch on fire.
You need to get an auto electrician or your Mitsubishi service center to locate the fault and repair.
If you had a wiring diagram for your car then you can trace the wiring from the 40A fuse to the various components to locate the wiring fault or component fault.

Dec 30, 2012 | Cars & Trucks

1 Answer

20A ACC/cig fuse, 40A fan fuse (AC) keeps blowing on 05 Sebring.


Disconnect the cigar lighter and see if the short goes away, I will bet it does.

Aug 09, 2012 | Chrysler Sebring Cars & Trucks

1 Answer

No AC blowing in 01 honda accord ..... no air at all...not hot or cold.....nothing


First, check the under hood fuse box, Fuse number 17 (40A) Heater Motor.
If that isn't it, leave a comment and I will investigate further.
Hope this helps you.

Nov 11, 2009 | 2001 Honda Accord

1 Answer

20 amp fuse in the box under hood that keeps blowing


Does it only do this when the heat or A/c is on full blast.. ( I had a few of my customers with this problem and they needed a new blower motor..)

Jan 26, 2009 | 1997 Dodge Intrepid

1 Answer

Ignition module failure how would I know?


All Fuses? Under hood & down by left foot? Sometimes 30/40A fuses can blow & still look OK. Check them with a meter.

Jan 03, 2009 | 1992 Toyota Pickup

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