Question about 1994 Jeep Grand Cherokee

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Why does my 20amp fuse under the hood blow just as soon as my engine starts?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 113 Answers

SOURCE: 1995 jeep grand cherokee wont start

IF THE FUSE BLOWS IMMEDIATELY, THE VEHICLE HAS A SHORT IN THAT CIRCUIT. CAR WON'T RUN WITH A SHORTED ECM. CHECK THE WIRING FIRST FOR A BARE OR PINCHED WIRE.

Posted on Aug 25, 2009

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  • 43 Answers

SOURCE: blowing fuses jeep wont start

use a circuit breaker or paper clip with pliers so you do not burn yourself use paper clip as fuse unplug engine controll sensors 1 at a time and check if problem is gone after each one is unplugged an engine controll sensor is most likely shorting out if you have a map sensor try that first then move on to other components tps,fuel pump ect. till you find wich is fauly causeing short this should help you just be carefull with paperclip am saying to do this instead of blowing expensive fuses

Posted on Aug 26, 2009

ZJLimited
  • 17970 Answers

SOURCE: large 20amp fuse keeps blowing

Change the fuse for the correct size AMP.

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More details about Power Center Distribution, check the Section 8W Wiring Diagrams

Good luck.

Posted on Sep 02, 2009

Mickgiever
  • 146 Answers

SOURCE: my 1998 jeep grand cherakee limited while driving

Sounds like a dead ground to the fuel pump.
This could be dangerous if the bare wire is in the fuel tank.

Posted on Dec 13, 2009

  • 2926 Answers

SOURCE: wat does the 20amp fuse under the hood labeled

I answered your question on a previous post. Check it out.

Posted on Jan 18, 2010

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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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My 2002 Dodge Stratus has been stalling at random and blowing the pcm 20amp fuse


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If it is a 20amp fuse in the passenger compartment its for the power door lock circuit.

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As soon as i turn key in ignition it blows a 20amp fuse under hood,know little about electrics but afford to take it to garrage,checked starter connection nothing. any help would be greatful.


Which fuse does it blow? do a wiggle test to wires that comedown from ignition switch.the component fuse would give us a clue. does vehicle start with fuse blown?

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I have a neon that wont start. It quit on me yesterday and got it started while going down the 1 mile later was at the house! I've checked every thing! Today I check the fuses under the hood and found a 20...


You will have to check the start switch.If its smoking you have a short in it which could cause a fire.Thats why it keeps blowing the fuse its a short in the switch.

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1 Answer

Fuse behind glovebox 20amp always blows when car starts which kills the engine. What does it regulate someting is grounding out...what can it be?


Only one way to find out. Get a 30 amp fuse in there, get 3 or 4 more people to be spotters, open the hood, one under the dash, wait till dark, start the engine, somebody will see a spark, you just found your short. If it blows without anybody seeing anything, try it again, feel the wires at random and see if they got hot somewhere, open the trunk, check everything, have somebody under the car looking. I found this by accident one night, hope it helps.

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I need a diagram for the under hood fuse box. More importantly the specific 20 amp fuse labeled F21. What is it for. I have a 1998 jeep wrangler 4.0 4wd.


Are you sure that this is for 20AMP, according with the repair manual, the position 20 in the Power Distribution Center if for Power Motor ABS Pump, and is 10AMP.

Verify it..

Mar 17, 2010 | 1998 Jeep Wrangler

1 Answer

20amp fuse in black box keeps blowing


dear,


The fuse ecm b it tied to the fuel pump, PCM, and VCM.
Fuel pump could have an internal short
check it by the way...

regards,

Sep 30, 2008 | 1999 GMC Sonoma

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