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(7 F250 no blow, I thnk it might be a short, bad ground, makes a hum but no go

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  • Cars & Trucks Master
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Hum means you have power and ground, but blower is jammed physically. Could be corrosion in bushing. They lubricants. Could be leaves or something fell into impeller. Have to take it apart to see.

Posted on Oct 31, 2012

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Posted on Jan 02, 2017

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SOURCE: When I plug in the block heater it is blowing the ground fault.

evither the cord on the heater has a short in it or the heater itself is shorted ....basically like a waterheater element

Posted on Dec 21, 2008

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My 1999 f250 is blowing the fuel pump fuse can you help


You have a short to ground ! Finding The Source Of Electrical Shorts In Your Car Which fuse is blowing ? # 10 a 20 amp in the under hood fuse box ? Check the fuel pump relay , that could be the problem .
You can find location of fuel pump relay here . http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model and engine size . Under system click on electrical distribution , then under subsystem click on junction block ! Then click the search button , then on the first blue link . The first diagram is of the under hood fuse / relay box . Try another relay , they can short internally .

May 14, 2017 | Ford F-250 Cars & Trucks

2 Answers

What is a good method to troubleshoot a dead short in a wiring harness? Are there any devices that would fail and create an injector ground-out?


They make devices called short finders. Some are more expensive then others. You put special fuse in the system that keeps blowing the fuse, it makes and breaks connection. Then you use the short finder to direct you to the spot that current stops flowing. In that area the short to ground would be. I would get a wiring diagram to see exactly what circuits are feed from the circuit that keep blowing.

Jun 08, 2015 | Cars & Trucks

2 Answers

97mits mirage 1.5 blows 30amp fuse as soon as ignition key hits turnover position? Suspect bad ground


Try disconnecting the wires from the starter and try it again. If it blows the fuse again, then your ignition switch it'self is probably shorted. If it doesn't blow the fuse, your starter is grounded on the inside and needs to be replaced.

Nov 09, 2014 | Cars & Trucks

1 Answer

What would cause the number 9 maxi fuse to blow?


The first time this fuse blows you could assume that heat and age were the culprit. If it is replaced and blows a second time you will need to check for an improper ground (broken wire or loose ground wire or bad connector) at each device powered by the fuse.

Aug 03, 2010 | 1995 Ford F250

2 Answers

I have a 2000 F250 7.3 diesel, I keep blowing the #30,30 amp fuse, fuel heater fuse. Why?


most likley the fuel heater is bad and shorting out happend to me replace the heater

Jan 07, 2010 | 2000 Ford F250 Super Duty Crew Cabs

3 Answers

When i hook up my trailer lights it blows the fuse


I replaced some clearance ligts on my stock trailer and when I plug the trailer in it blows a fuse in the truck

Nov 14, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

My 1995 Ford f 250 bad fuse problem


look for a short to ground in the tail light circuit. Place a 12v light bulb in place of the fuse. If there is a short, it should light. When you find the short, the light will go out. Looks like the brown wire is the focus.

96 f250 circuit, don't have 95. similar. please rate as fixya if this helps.

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Mar 26, 2009 | 1995 Ford F250

1 Answer

When I plug in the block heater it is blowing the ground fault.


evither the cord on the heater has a short in it or the heater itself is shorted ....basically like a waterheater element

Dec 21, 2008 | 2006 Ford F-250 Super Duty

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