Why does my Toyota Prius battery not idle?
A reversed polarity battery would not allow the engine to run at all, let alone no idle. The idle problem is one of two issues, a miscalibrated MAF – clean it and do a computer reset. The second issue is the low speed fuel pump resistor mounted on the driver fenderwell.
Why does my car stall after replacing the battery?
Cleaning these items returns them to their original condition, and can make a big difference in how your vehicle idles and runs. Ask your mechanic if this makes sense in your situation. Even if your car doesn’t stall after a battery replacement, it may lose other settings. But there’s a simple way to prevent all of these problems.
How often should I replace the battery in my car?
Replacing your battery is part of every car owner’s life. Every few years, you’ll need a new one. But sometimes fixing one problem can cause another. Replacing the battery on some vehicles may simply be plug-and-play — just remove the old one, put in the new one, and you’re on your way.
What kind of idle does a GM Eary have?
The cars I saw a dramatic idle relearn indications on (after replacing the battery) were eary 90’s 2.8 and 3.1 GM’s. After the first start with the new battery the idle would be all over the place for the first 15 min.
Why does my car not idle when the battery is dead?
There’s never a good time to have a flat battery, and just when you get that sorted you find the stupid engine won’t idle! I feel your pain, this is exactly what happened to me. So why won’t the car idle after a dead battery? When the car battery goes dead, power to the on-board computer is interrupted.
Why is my computer stalling after replacing the battery?
Severe cases of stalling after replacing the battery may require that your throttle body or your idle air control valve  be cleaned out. Over time, a large amount of carbon can build up inside these parts, pushing them beyond the limit that the computer can adapt to.
What causes a car battery to lose power?
Opening a door or turning the ignition on with the main battery disconnected can cause the battery in the device to lose power as well. Door modules Loss of express-up feature due to loss of stored “pinch point” Engine control module (ECM, PCM, VCM) Loss of learned idle speed which can cause a stalling condition.
Replacing your battery is part of every car owner’s life. Every few years, you’ll need a new one. But sometimes fixing one problem can cause another. Replacing the battery on some vehicles may simply be plug-and-play — just remove the old one, put in the new one, and you’re on your way.