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Isuzu ignition Troubleshooting

Fuse in under hood keeps blowing out when ignition turned only to the on position, even when coil unplugged.

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  • 47 Answers

There is an electric short

Posted on Nov 25, 2013

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Posted on Jan 02, 2017

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SOURCE: 1998 Dodge Stratus

i think you have corroded wires around the fuel pump harness creating a short circuit which is probably blowing the fuse.

Posted on Dec 14, 2008

insanegtp
  • 112 Answers

SOURCE: 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..)

Posted on Jan 26, 2009

  • 366 Answers

SOURCE: The big 40A fuse under the hood keeps blowing when

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

Posted on Feb 26, 2009

  • 121 Answers

SOURCE: keeps blowing the prime fuse under hood,gas gage

this problem is most likely caused by a fuel pump with high amp. draw on start up.use a amp meter.then replace fuel pump.

Posted on Oct 23, 2009

Testimonial: "Think your right,pump has been getting louder,have heard these pumps have been a problem.Thanks"

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SOURCE: 98 stratus won't start

Sis had a 1997 Dodge Stratus and experienced issues with the cigarette lighter. Car would not start and I was able to trace an ignition fuse as the problem. Replaced the fuse and the car would attempt to crank but not start and the fuse would burn. Repaired the cigarette lighter and changed the ignition fuse but fuse continued to burnout. Pulled the accessory fuse and car attempted to start without the ignition fuse blowing. Put the accessory fuse back in place and the car started up no problem,

Posted on Nov 13, 2010

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I have a 2000 Buick century custom and I had drained my reservoir. Now everything I attempt to start my car my pcm fuse blows instantly. I've replaced my ignition switch and fixed my ignition column yet...


pcm fuse blows instantly ???? What number fuse , how many amps ? Where is it located ? under hood fuse box . ECM fuse 10amp ,underhood fuse box ???? When does the fuse blow ? when you turn the key to the start position . How about when you turn it to just on position ? Replacing the ignition switch an the column ????? Why did you replace these ? You think it was going to fix the problem ? or someother problem ? Bad computer maybe .

Sep 16, 2017 | Buick Cars & Trucks

1 Answer

2003 ford thunderbird coolant fan not working


Most likely a 20 amp fuse. If the fuse is good, Find the coolant fan relay(under hood). Check to see if fan runs with A/C on. If the relay is good, the fan will run continuous with the A/C on. If the fan does not run with A/C on, The Relay is Bad. Check the fan by unplugging the relay and install a 14 Ga. jumper into the normally open terminal position(socket) If fan runs with jumper, check the remaining 2 positions in the socket for Voltage(13v.) If voltage is present, relay is bad. If voltage is not present, Temperature sensor(signal to relay) is Bad. Leave jumper in place to keep from over heating engine. Fan should stop running when Ignition switch is turned off. This engine will blow a head gasket if over heated. A service manual is recommended for component locations and troubleshooting.

Feb 27, 2017 | 2003 Ford Thunderbird

3 Answers

Why does the 20amp fuse for the fuel pump keep popping?


rodeo or rodeo SPORT?
2.2 or 3.2 engine> not even a cylinder count....
i wish all problems were this simple. (easy with ammeter)
the load is SHORTEd, the fuse saved the fire.
x2 all above answers
but keep in mind some fuses run more that one thing, ill check.

20amp fuse (no label) no engine option stated, must be the 6ve1, v6 twin cam.
fuel systems vary by (engine type)
not the 3.5L vin Y engines. 2.2 or 3.2L>?
fuse EB12, Engine bay fuse blows, 20a, fuel pump.

so pull these conn.
H-15 first
then if ok, (no blow)
H-25: if not blow now the pump is shorted
or the wire from H25 to F1 is ground to the frame.
wire inspections are first. on that path.
i use a EB12 , circuit breaker and mag ammeter to find this fast.
ask.



2.2L
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Sep 18, 2014 | 2003 Isuzu Rodeo

1 Answer

I have a 93 firebird that keeps blowing the ignition 10amp fuse when i turn the key


If you are talking about the #11 fuse ujder the hood, this feeds power to the crank position sensor, the cam position sensor, the coil pack and the transmission solenoids (on an auto trans car). Unplug those items and check resistance to ground. When you find one that is shorted you will have the culprit. The red wires on the sensors are the ones to check against ground.

Aug 12, 2012 | 1999 Pontiac Firebird

1 Answer

1990 Isuzu Truck 2.6 5-Speed , Cranks but no fire to the plugs, new cap. rotor Turn key to ignition on and no check engine light, no heat/ac , no flashers. HELP!


OK several things to check, is there power to the fuel pump, check as close to pump as you can? and did you check the ignition coil?

Jun 09, 2012 | 1990 Isuzu Spacecab

2 Answers

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


I would disconnect the noise filter located by the ignition coil/ignitor, have seen them short out and cause the AM2 fuse to blow. Also Disconnect coil, dist and see if short goes away

Dec 07, 2011 | 1994 Toyota Camry

1 Answer

I have a 2006 jetta 2.5 an the ignition coil on cylinder number 2 always keeps melting, and a fuse always keeps blowing in the fuse box under the hood, the car will not start when the fuse is blown, but...


seems like perhaps that coils location is too close to the manifold which if the timing is not correct gets hotter than all get out ,like fire red hot see if you can add a heat shield under/ between the coil and manifold

Sep 07, 2011 | 2006 Volkswagen Jetta

1 Answer

I have a 1993 ford explorer, every time i turn the ke to the run position, it blows the ignition 60amp maxi fuse under the hood. The first time this happened, I replaced the fuse and the SUV ran fine for a...


I'm no expert but when you turn key to run position, this turns the fuel pump on if the pump is faulty i would think it would blow the fuse also. Or its your theory a short in the ignition system wiring.

Mar 20, 2011 | 1993 Ford Explorer Limited

1 Answer

Keeps blowing fuel pump fuse. Why?


This normally happens due to short in the wirings.Or if someone has connected a stereo or some other electrical contrivance to the wiring harness (bundle), either under the dash or under the hood.To confirm this unplug the fuel pump wiring connections and insert new fuse.Then start the car and see,if still the fuse blows then its a short in wiring.But if the fuse does not blows then its faulty fuel pump relay or faulty fuel pump itself.So first replace the fuel pump relay and see,if the fuel still blows then its faulty fuel pump.But if the fuse not blowing then relay was the faulty part.The fuel pump relay located on the fuse box under the hood.---------This troubleshooting tips will help you locate the fault and solve it.-------Thanks.Helpmech.

Dec 13, 2010 | 1996 Dodge Neon

1 Answer

The big 40A fuse under the hood keeps blowing when


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

Feb 25, 2009 | 1998 Chevrolet Blazer

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