Why does my car shake after installing a new battery?
The ECU needs to relearn its fuel trims — it’s normal for the idle to be unstable for the first couple drive cycles after disconnecting the battery (which is obviously required to install a new battery, so it applies to your situation).
Is it bad to rev on a cold start?
It helps distribute oil throughout the engine and get the engine block and engine oil up to temperature. Revving the engine won’t speed up the process. In fact, that could cause easily avoided damage. Cold revving causes abrupt temperature changes that create stress between the engine’s tight-fitting components.
What happens when you Rev the engine to charge the battery?
You must be careful when revving the engine to charge the battery because revving the engine can hurt the car. This will only happen if the engine is cold or if the car is in neutral. Revving the engine in either of those states can cause excessive engine wear.
What happens when you replace the battery in a car?
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. But some cars can react differently when you disconnect and then reconnect the primary source of power.
When to know if your alternator or battery is bad?
Using the process of elimination, find the culprit by bypassing the battery’s role and jump-starting your car. If the engine starts but dies immediately, your alternator probably isn’t keeping your battery charged. If a jump starts and keeps your car running, but the car can’t start again off of its own power, a dead battery is likely your answer.
What to do when your car engine stalls after a new battery?
Begin with the vehicle on level ground engine off (cold) with the emergency brake set. Step 1 – After a new battery has been installed, the engine could idle low or stall out altogether.