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Fuses That "Blow" Repeatedly
Without being able to "hands on" troubleshoot the circuit served by the repeatedly blowing fuse, no one can identify the specific cause/defect which is causing your problem.
Therefore, the following generic answer can be applied to any electrical circuit, whether in a vehicle, or in a building, or whether alternating current [AC] or direct current [DC].
Fuses [and Circuit Breakers] are safety devices designed and installed in electrical circuits TO PROTECT the conductors [wires] and other components from short circuit conditions and/or overload conditions which cause an extremely large flow of electrical current [measured in Amperes], which causes overheating of the conductors that results in damage to the insulation and the conductors.
And in a worst case scenario, the probability of a FIRE which could destroy the vehicle, house, or other structure in which the circuit is located.
When a fuse or Circuit Breaker [and replacement fuses, or "tripping" Circuit Breakers] "blow," especially if it happens repeatedly, is an indication of an UNSAFE CONDITION in that circuit, usually a short.
The fuse or circuit breaker is doing what it was designed, intended, and installed to do, protect the conductors and components of the circuit which it serves.
The proper "fix" is for a qualified technician, who knows what he or she is doing, to troubleshoot the involved circuit, find and identify the defect, and make proper repair [s], BEFORE replacing the fuse again [with the properly sized fuse or before resetting a circuit breaker].
Some ignorant few will suggest installing a larger fuse or breaker to solve the problem, BUT that will only increase the hazard, not correct it. Do not follow "bad" advice by installing a larger fuse in a misguided attempt to correct the problem. To install an over-sized fuse would almost guarantee damage to the wiring and an electrical system fire.
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∙ 14y ago
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Why does 96 Tahoe keep blowing ecm-b fuse?
Fuel pump
Why would the ECM fuse on a 2002 Silverado keep blowing?
Short some where.
What causes an ECM fuse to keep blowing on a 1987 Chevy Blazer?
The fuel pump is shorting out and that is why the ecm fuse is blowing .Disconnect the the fuel pump and try it again,if the fuse blow's again then it is not the fuel pump.
Fuse keep's blowing don't know what the fuse is for but when it blows the car wont start?
Sounds like it could be the ECM fuse. You need to have someone check it for a short.
Why does my Ecm fuse keeps blowing out on 91 astro?
direct short! the fuse not only runs the ecm but it also handles the fuel pump as well as all the electronic devices on the motors its self. for example, the power doing to the fuel injector solenoids. so you have a direct short with enough amps to pop that fuse
Where is the ecm b fuse located on 1997 astro van?
In the fuse holder , look at you owners manual.
Why does the ECM fuse keep blowing in your 95 Buick Regal Custom?
Shorts are what come to mind. Try to follow your wires and check for cuts or bare wires. Good Luck!
What causes Blown fuses when starting a 2001 chrysler sebring?
A fuse blows when the current in the circuit passes what the fuse is rated at. If you are blowing the ECM/starter fuse, the starter is probably bad.
Why does my 1995 Chevy blazer keep blowing the ecmb fuse?
Does the obd2 plug work? allot of the time it can be joined with the cigarette lighter. Check that it could be an issue. If not I would think the ecm may be shorting out?
Wath is ecm fuse?
Where is the ecm fuse on a 1994 chevy truck
Why does my 91 Chevy s10 blazer ECM b fuse keep blowing?
check your wires underneat that run back to rear of vehicle, sometimes when the both mounts rust through the body come down on the wires and grounds them out
What fuse do you take out so you can't start it?
Pull the ECM fuse or the injector fuse , or you can pull the fuel pump relay out of it .... all will keep it from starting
