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If the car has not ran very long since you did the cleaning it might be excess throttle body cleaner in the intake manifold. Otherwise, your is with the throttle body. The throttle body controls the air to the engine, the computer controls its position and everything else in the air/fuel mixture. I would double check to make sure that the throttle body is closing completely. If that is not the problem, I would look for either a leaking gasket or a hole in the system somewhere between the throttle body and the engine. Because if you are getting too much air to the engine, the computer will think that is the rpm that it is supposed to be running, and it will give the engine fuel to burn the air.
may be it the problem of another throttle body.also check the ignition switch.
Check all of the battery terminals and cables and check the wires on the starter/selonoid, start from the battery and follow the cable out and check all conections , clean and tighten them and if it still does it the starter/selonoid is bad and needs replacement...
This P0507 code is one that's sometimes triggered on vehicles that have electronic throttle control. That is, they don't have a regular throttle cable from the accelerator pedal to the engine. They rely on sensors and electronics to control the throttle. In this case, the P0507 DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is greater than the desired (pre-programmed) RPM. In the case of GM vehicles (and possibly others) if the idle speed is over 200 rpm higher than expected, this code will be set.
you will need to clean out the throttle body. What happens is that when the car is new the computer has a default value for the throttle and it knows how much to move it to make the vehicle run. As time goes carbon gets on the throttle bore and starts to cause the throttle blade position to be changed by the computer. This is what the computer is supposed to do. When you disconnected the battery during the alternator replacement, the computer went back to the default value.
Quest#1 Your intake manifold is leaking
Spray carb cleaner while running at intake manifold gasket , both sides, and check for a difference in running condition while spraying to confirm leak here. Replace all intake manifold gaskets and plenum gasket.
If this does not confirm intake leak , have the Throttle Body cleaned manually by a professional, or yourself using specifically" Throttle Body Cleaner "
Clean your throttle body. Once the battery is disconnected and the computer reset, it no longer increases power to make up for a dirty throttle body. Get a $4 can of carb cleaner. If you go to a mechani9c they will tell you that it is the ac compressor.
THis has happened to me in the past. My fix was to clean the throttle body. The problem began after my battery died. The computer was defaulted back to its original settings after replacing the battery. Once I cleaned the throttle body, everything was fine. This happened at about 85,000 miles.