Question about 2001 Lexus IS 300

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Car will not start

I replaced the battery the post where backwards it pop the main fuse replaced with a new battery the car will not start it cranks over fine and will run on starting fluid but not on its own i checked the fuel pump its working is there a reset somewhere

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Check all the fuses inside and outside of car.when you hook up battery backwards it will blow more then one fuse.

Posted on May 21, 2009


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My 2008 jeep commander is cranking but when u drive it an cut it off it won't crank unless you charge the battery the battery is good an i had my alternater tested it's good I put a new battery in it...

You may have fried the fuseable link that comes off of the positive battery terminal. Disconnect it from the post as well as the negative cable from the battery. Check the continuity along the length of the cable anywhere thrre is no continuity the link has blow, replace it or the entire cable.

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You probably blew the main fuse. Its like a 100 amp fuse. huge thing. It should be in the under hood fuse block or close to a battery cable. Your owners manual will tell the location. If thats it you can rig it up with aluminum foil for now to get it back on the road.

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Turned ignition on, heard a loud pop and everything went off. tried ignition again, got nothing, no battery turn over, nothing.

Start by checking the fuses and then the battery connections, this sounds like a fuse poped maybe a main fuse, if its a fuse then replace the fuse if it pops again then theres a dead short somewhere, these are famous for bad starters and starter relays going bad, so see when fuse pops again if its when key is turned on or when you try to crank the motor, if its when cranking then its mostlikely the relay or starter, this main fuses would be in the engine compartment fuses box.

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After replacing the battery I have no power at all

Possible causes:
1. New battery defective. ( Open circuit between battery cells ) Seen it before, therefore, possible.

2. Battery terminals not making connection ( check terminals )

3. Battery has different polarity than the original battery. ( Positive post and the negative post are reversed ) They do sell the reverse battery, therefore, possible. Basically, a battery hooked up backwards.
That would cause the Main fuse to blow resulting the no power in the vehicle.

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