Hey guys, My name is Josh and well I have 2005 Scion tC and can't seem to figure out what the problem is. It idles fine but as soon as I hit the gas it bogs down and stalls out. Sometimes in neutral I can get it to about 4000 RPM but most of the time it stalls out around 2000 RPM. But if I put in gear it stalls almost immediately. I have replaced my fuel pump, cam shaft position sensor, it has new spark plugs, it has plenty of gas in the tank and just recently had the engine rebuilt. I also just re did the wiring for the ignition coils. I am not sure what it could be causing this, everything I thought it might be I have either tested or replaced. So if anyone has any ideas of what it could be or what I can do or check to fix this please let me know. Here is a couple videos of the car and what it does. Anything helps. Thanks.

 

I had a car that we were wiring a standalone and DBW (drive by wire) setup into do this. The drive by wire was out of range and would go into protection mode. Unfortunately this was on a totally different car so I don't have any wiring diagrams or info that will relate to your car. You might check your MAF sensor also, if it has a spot that's out of range it can shut you down too.

 

Found out that the first and fourth cylinder are not firing any one have any ideas on how to fix that?

 

You said that you rewired the ignition coils. Was there wiring problems with the car? I would check the whole harness or grab one off a junkyard car.

 

I was gonna say that it sounds like you are on 3 cylinders. Try swapping the coils with cylinder 3 and see if the problem switches to that cylinder. If it does, then you have a bad coil. If it is still cylinder 4 with the problem, it is either your wiring to the coil or a stuck injector.