2001 Toyota corolla alternator fuse keeps blowing
2001 Toyota corolla alternator fuse keeps blowing
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Discussion

Meggatron

Original Poster:

4 posts

89 months

Wednesday 26th June 2019
quotequote all
I recently got my drivers lisence and went to get my car ready to drive. I had thr battery trickle charging for about a 2weeks I put the battery in and as soon as both terminals connected the headlights and horn turned on and wouldn't go off so I unplugged it took the horn fuse out and reconnected the terminal. I figured it was my alarm since I unlocked the door with the key I go to turn the car on and nothing no turnovers or anything so I looked it up and found to check the am1 and am2 fuses and the am2 was blown so I put in the spare turn the key and I get alittle turn over and it stops go back to check and it blew then I notice the alternator fuse is blown so I take out the battery go pick one up replace it put the battery back in and as soon as both terminals connect I hear the fuse blow again. I'm not sure how to fix this or how to figure out if i did fix it without blowing tons of fuses any advice would be appreciated

E-bmw

13,606 posts

183 months

Wednesday 26th June 2019
quotequote all
Are you sure you haven't connected the battery the wrong way round?

Meggatron

Original Poster:

4 posts

89 months

Wednesday 26th June 2019
quotequote all
Yes I am sure

sgtBerbatov

2,597 posts

112 months

Wednesday 26th June 2019
quotequote all
Such an odd issue. AFAIK the 2001 Corolla only has an immobiliser and no alarm, regardless of it being opened remotely.

Are you sure the fuses are the correct type and amperage? If they're lower then they'll blow the moment power goes through them.

Meggatron

Original Poster:

4 posts

89 months

Wednesday 26th June 2019
quotequote all
Yes it's the exact same as the one that was in before

sgtBerbatov

2,597 posts

112 months

Wednesday 26th June 2019
quotequote all
Meggatron said:
Yes it's the exact same as the one that was in before
But is it the actual fuse that's meant for it? Have you checked it against the fuse box diagram?

What is the history of the car by the way? Is it a new one you've bought or have you had it a while parked up?

Meggatron

Original Poster:

4 posts

89 months

Wednesday 26th June 2019
quotequote all
I bought it used it has been sitting for a few months

Penelope Stopit

11,209 posts

140 months

Wednesday 26th June 2019
quotequote all
What springs to mind is that you could have charged the battery the wrong way around and blew the alternator diodes when connecting it up, the diodes will often blow before the fuse blows

Now you have a correct polarity battery but there is a short on the alternator that keeps blowing the fuse

If the battery was charged the wrong way it will very likely have damaged other components

Penelope Stopit

11,209 posts

140 months

Friday 28th June 2019
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I wonder what happened

E-bmw

13,606 posts

183 months

Friday 28th June 2019
quotequote all
I wonder?

Penelope Stopit

11,209 posts

140 months

Friday 28th June 2019
quotequote all
You best wander while you wonder

sgtBerbatov

2,597 posts

112 months

Monday 1st July 2019
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One wonders where to wander while be ponder what we wonder.

Penelope Stopit

11,209 posts

140 months

Monday 1st July 2019
quotequote all
If you ponder while you wander you will wonder how you ended up out yonder

E-bmw

13,606 posts

183 months

Monday 1st July 2019
quotequote all
Wonderful ponderings...…..

Penelope Stopit

11,209 posts

140 months

Wednesday 3rd July 2019
quotequote all
E-bmw said:
Wonderful ponderings...…..
Yes I reckon it was this
E-bmw said:
Are you sure you haven't connected the battery the wrong way round?
or this
Penelope Stopit said:
What springs to mind is that you could have charged the battery the wrong way around and blew the alternator diodes when connecting it up, the diodes will often blow before the fuse blows

Now you have a correct polarity battery but there is a short on the alternator that keeps blowing the fuse

If the battery was charged the wrong way it will very likely have damaged other components
This silence is wearing me down now