damiendaz

When I am driving and I come to a stop the RPM's on my car goes down to 0 causing the car to hesitate on acceleration. What could be the problem?

jasonb75

iTrader: (1)

Search button is your friend.

Also, if your RPM goes to zero, your car wouldn't be running.

lexusben

iTrader: (3)

Low RPM's at idle are usually caused by a dirty MAF (Mass Air Flow Sensor), and a Dirty Throttle Body. There are tutorials on this. It could also be dirty Oxygen Sensors that aren't throwing codes yet.

damiendaz

I have changed all of the oxygen sensors, MAF sensor, and the TB sensor. The spark plugs and wires were also changed.

oysgs430

iTrader: (2)

What do you have 300/400/430 that may help

damiendaz

I have a gs300

dejavu157

iTrader: (2)

did u recently spray ur engine bay down?

damiendaz

The engine has never been sprayed down.

AYEmike

you sure the spark plug wires are OEM fit? bad fitting can cause rpm drop, as well as ignition coils going bad.

lexybaby77

did it happen just right after you've done all those work?

damiendaz

The spark plugs are OEM fit. I got them from the dealership.

damiendaz

It happen before I done all the work that was performed.

lexybaby77

Spark plug wires OEM too?

damiendaz

Yes! Everything was OEM

raytseng

Fuel filter? did you get that done? Search for the DIY on that (and read service manual instructions).
It helped with a very slight lag in my car as it looks like you've done everything else.


Or you can also try resetting your ECU to see if that makes a difference (disconnect battery for 30min). It may take some a short time for ecu to relearn; and fair warning about losing your presets.

One final suggestion, maybe run a tankful of high PEA fuel injector cleaner through(Redline/Gumout/amsoil)