had it in with two different mechanics one said he was stumped and the other thinks internal problem with starter. the 20 amp fuse under the hood that controls the starter and fuel pump randomly blows no rhyme or reason to it. so id like some input before i decide if im gonna change the starter or not. its not at all easy to get to. so any ideas??????????
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2001 chrysler sebring keeps blowing fuse?
- Thread starter ace63376
- Start date
helpful bob
New member
If the same fuse you say is for the fuel pump and starter that would mean that the same fuse feeds both the starter and fuel pump relays.The comp system is what sends a signal that turns on the the fuel pump relay usually this is a negative turn on signal.The fuel pump relay then would send power from it's pin 30 to pin 87, pin 30 would be the fuse feed, pin 87 would be the relay output going to the fuel pump.Usually a yellow ignition wire to send a turn on signal to the starter relay this would also work the same way but the starter relay uses not only the yellow wire but a ground from the neutral safety switch.In other words the relay has a coil this coil must have both a positive and negative turn on signal in order from the relay turn on.
The problem here is knowing what device of the devices is the one with the problem.I would strongly recommend trying different relays in the two circuits bec a faulty relay can cause a fuse to blow too.If you can try a different relay in place of the starter relay for example, don't use the A/C system and if the starter and A/C clutch relays are the same part numbers switch them around.You could do the same thing with the fuel pump relay and maybe the high fan relay.
Once you know for sure that it's not a relay problem double check the amperage of the fuse and check it's fuse socket connections for any loose/rusted/corroded connections, bec a loose/dirty fuse holder clip and a little vehicle vibrations can cause the fuse to slightly disconnect just for a second enough to cause a circuit surge and blow the fuse.
Now if you've checked all that check the grounds going to these devices that are fed by that fuse and check the wiring closely.You may want to look online at autozone , then register for free and look up your vehicle and look under repair info/vehicle repair guides.There maybe diagrams of the fuse and the two circuits that are so far involved , plus there maybe other devices that this fuse feeds.Either wiring diagrams or engine chassis etc sections should have some diagrams and you can also go to part source, they offer free print outs, try asking them to print out any info for any diagrams involving the fuse boxes,starting system, the fuel pump.
Hope that helps and best of luck.By the way you say that the problem really isn't when trying to start the vehicle that the fuse tends to blow so you maybe looking at one of the other devices that that fuse and it's wiring connect up to. But yes the stater could have a problem with a weak/poor/corroded/rusted/loose connection or the solenoid/starter maybe drawing too much power but also the fuel pump maybe over heating or suddenly failing causing a short or surge on the circuit so again check the wiring harness's/wiring/grounds etc.Again if its the starter it only blow the fuse when trying to start the engine and the starter wouldn't cause the starter fuse to blow while driving the car or if it's sitting idling but a loose ground or wire or loose ground, bare wire going to the starter could suddenly being shoring out or causing surges etc.
The problem here is knowing what device of the devices is the one with the problem.I would strongly recommend trying different relays in the two circuits bec a faulty relay can cause a fuse to blow too.If you can try a different relay in place of the starter relay for example, don't use the A/C system and if the starter and A/C clutch relays are the same part numbers switch them around.You could do the same thing with the fuel pump relay and maybe the high fan relay.
Once you know for sure that it's not a relay problem double check the amperage of the fuse and check it's fuse socket connections for any loose/rusted/corroded connections, bec a loose/dirty fuse holder clip and a little vehicle vibrations can cause the fuse to slightly disconnect just for a second enough to cause a circuit surge and blow the fuse.
Now if you've checked all that check the grounds going to these devices that are fed by that fuse and check the wiring closely.You may want to look online at autozone , then register for free and look up your vehicle and look under repair info/vehicle repair guides.There maybe diagrams of the fuse and the two circuits that are so far involved , plus there maybe other devices that this fuse feeds.Either wiring diagrams or engine chassis etc sections should have some diagrams and you can also go to part source, they offer free print outs, try asking them to print out any info for any diagrams involving the fuse boxes,starting system, the fuel pump.
Hope that helps and best of luck.By the way you say that the problem really isn't when trying to start the vehicle that the fuse tends to blow so you maybe looking at one of the other devices that that fuse and it's wiring connect up to. But yes the stater could have a problem with a weak/poor/corroded/rusted/loose connection or the solenoid/starter maybe drawing too much power but also the fuel pump maybe over heating or suddenly failing causing a short or surge on the circuit so again check the wiring harness's/wiring/grounds etc.Again if its the starter it only blow the fuse when trying to start the engine and the starter wouldn't cause the starter fuse to blow while driving the car or if it's sitting idling but a loose ground or wire or loose ground, bare wire going to the starter could suddenly being shoring out or causing surges etc.