Why does my car keep blowing the starter fuse?
My car intermittently blows the starter fuse when starting. It started out doing it once every couple of months and would always start with a second fuse. Then it blew 5 fuses in a row and I had to have towed to a shop. The shop said they isolated the problem to the fuel pump and replaced it.
Can a 15 amp starter fuse be blown?
Fifteen amps may not be enough to blow the fuse on a one time deal but this repeated current surge due to the fan cycling on and off can weaken the fuse and eventually pop it due to heat.
What causes a fuse to short on a starter solenoid?
A look at a schematic shows this fuse (No. 8, 20 amp, hot all the time) provides power for for the starter solenoid through a separate starter relay. The problem should be one of 3 things. Intermittent short in the red wire to the relay or in the brown wire to the starter solenoid. Internal problem in the solenoid. Faulty starter relay.
How to diagnose a fuse that keeps blowing?
(EASY) DIAGNOSING A FUSE THAT KEEPS BLOWING, ELECTRICAL (SHORT CIRCUIT, NO START) / ARE YOU SAVED? – YouTube (EASY) DIAGNOSING A FUSE THAT KEEPS BLOWING, ELECTRICAL (SHORT CIRCUIT, NO START) / ARE YOU SAVED?
What causes ignition fuse to keep blowing?
The ignition switch can cause the fuse to blow. If the ignition switch is the problem, the fuse will usually blow as soon as the ignition switch is turned on. Some other things that can cause the fuse to blow are: The fuel cut off solenoid.
Can a car fuse go bad without blowing?
Due to the way fuses are engineered, the likelihood that a fuse would become faulty without blowing is pretty slim, but there are rare instances in which a fuse might appear completely fine, even though no current runs through it.
Is there a fuse for my starter?
There is no fuse for the starter, there is however a fuse for the ignition system.
Can a bad relay cause a fuse to blow?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
What should I do if my car fuse keeps blowing?
The important thing is to understand what is causing the fuse to keep blowing. The simple fix is often replacing the blown fuse and test the car again. If the fuse does not blow, it might be an easy fix because there was a power surge in the system.
My car intermittently blows the starter fuse when starting. It started out doing it once every couple of months and would always start with a second fuse. Then it blew 5 fuses in a row and I had to have towed to a shop. The shop said they isolated the problem to the fuel pump and replaced it.
Fifteen amps may not be enough to blow the fuse on a one time deal but this repeated current surge due to the fan cycling on and off can weaken the fuse and eventually pop it due to heat.
The important thing is to understand what is causing the fuse to keep blowing. The simple fix is often replacing the blown fuse and test the car again. If the fuse does not blow, it might be an easy fix because there was a power surge in the system.
A look at a schematic shows this fuse (No. 8, 20 amp, hot all the time) provides power for for the starter solenoid through a separate starter relay. The problem should be one of 3 things. Intermittent short in the red wire to the relay or in the brown wire to the starter solenoid. Internal problem in the solenoid. Faulty starter relay.
What to do if your fuse keeps blowing?
Don’t wiggle wiring harnesses around in hopes of getting it to not blow another fuse because then there’s no defect to find. Once it is in the defective state, insert a pair of spade terminals in place of the blown fuse, then use a pair of jumper wires to connect them to a 12 volt light bulb.
Where is the starter fuse on a ram truck?
On Ram Trucks, the starter relay fuse is located in the Power Distribution Center (PDC) and is fuse “D.” If the fuse is blown, inspect the starter relay circuit for any electrical shorts to ground. Refer to the appropriate Service Manual, Group 8W-21 “Starting System Wiring Diagrams” for circuit identification, components, and their locations.
(EASY) DIAGNOSING A FUSE THAT KEEPS BLOWING, ELECTRICAL (SHORT CIRCUIT, NO START) / ARE YOU SAVED? – YouTube (EASY) DIAGNOSING A FUSE THAT KEEPS BLOWING, ELECTRICAL (SHORT CIRCUIT, NO START) / ARE YOU SAVED?
What happens when you blow the 20 amp fuse?
The 12 volts power supply from that 20 amp fuse is distributed to more circuits than the start circuit. The electrical short / overload could be in any of those branches. When power branches like this, the branches have to be checked and disconnected to find the fault. Good luck in finding an electrician. It might be worth changing the starter.
What to do if your engine fuse keeps blowing?
2. test two – connect the jumper leads from terminal number 9 to the battery positive terminal and terminal 6 to the battery negative terminal. check for continuity between terminals 3 and 2 there should be continuity. now remove the ground lead from terminal number 6 on the relay. the ohmmeter should now indicate no continuity.
Where is the fuse for the car starter?
Often there is a fuse and relay for the car starter in the fuse box but sometimes they will have external fuse on the fuse line or close to the car battery. The fuse for the starter in the fuse box is often used for the bendix and not the starter motor. The starter motor fuse is usually big and it will not be in the fuse box.