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The XV20 series of the Toyota Camry is Toyota's 6th generation of the Camry sedan.

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Battery was charged in reverse

Hi i have a 1997 toyota camry le 2.2 L

My battery died and i replaced with a reman battery from my job “ i work with battery starter and alternators” when i hooked cables up the car started cranking with no key in ignition. Disconnected and tried couple more times. Just curious got my volt meter and nothing. Baffeled i decided to reverse the meter and got 12.63 volts so the battery was completely drained and charged backwards ( ive seen it happen multiple times ) meaning the postive was actually negative and the negative was actually positive. I got new battery tested with volt meter put in car turned key and all it did was crank. Check and replaced cpl fuses got car starter and was able to make home with nothing working no lights heat or ac brake lights radio nothing. Replace 100 amp fuse and all accessories are working but now car will start then shut right back off even if i hold foot on pedal. Also the radio has a real bad high picth noise comeing from speakers with the key off. If i leave battery connected it will drain overnight. All fuses are good. Alternator is good.

Could the ecm be fried or shorted??

Hopefully someone can help me this is my only car and cannot afford to get another one so ive been walking and taking uber for the past 2 weeks.

Thanks

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Have you checked the fusible links and relays in the relay/fuse boxes under the hood? Here is a link for what a fusible link looks like: https://www.autozone.com/electrical-and-...

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@jerbear1969 you have a lot going on with your Toyota. First rest assured that you cannot reverse the polarity of your battery with a wrong charge etc. Not possible based on the way ta battery is designed. You may have issues with the meter. So you replaced the battery and your car started but no power options until you replaced the fuse. Now the lights etc. work and your car starts but immediately stalls again. That does sound like a fuel issue but since you repalced the battery try to re-teach your computer. Se if this will work for your Camry

1. Pull your parking (emergency) brake. (Brake on) Add additional chocks to prevent your vehicle from moving

2. Start the engine and step on the gas steady around 800 RPM. (with your right foot)

3. After 15 minutes, do all these at the same time: Step on the brake pedal (with your left foot), put the transmission shifter in DRIVE (D) with the RPM steady at 800 RPM. !!!!MAKE SURE YOU HAVE YOUR PARKING BRAKE AND CHOCKS APPLIED TO PREVENT YOUR VEHICLE FROM MOVING!!!

Do not let the idle fall below 800. Keep it at 800 RPM for around 15 minutes..

After this your idle should be back.

If that does not work then you will have to check the fuel supply. Check to make sure that your fuel pump is working and that you have pressure on your fuel lines. Get some throttle body cleaner and clean your throttle body and IAC valve.

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My car did this. Replace your fuel pump. If you can't afford the whole pump just by half the part and rebuild it using the piece from the old one. I did this. My car is back running.

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Jerry さん、ありがとうございました！
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