Cold start wont idle

After replacing the Mass air flow, #1 cyl coil pack and all 4 spark plugs on my 2005 Tacoma 2.7. At cold start the motor will not idle. After the engine is warmed up then it will idle. Codes are PO300, PO301, PO302, PO117. What should I look at next?

 

Welcome to TW. Man, you have a handful of codes. I personally wouldn't know where to start, but hopefully you'll get the answers you're looking for. Good luck

 

Than you very much for the welcoming.
I have looked at many forums and TW seems to be very professional. I'm glad to be here.

 

I'm unclear if you changed all these parts trying to solve this same issue, or if the issue started after all those parts were replaced. I'm going to assume the first option, and suggest you look here first:

http://www.customtacos.com/tech.old...06toyrm/06toypdf/06rmsrc/rm2006ta/0060020.pdf


A faulty ECT signal (engine coolant temperature) to the ECM will cause misfires and your dying at idle, so I'd rectify that first and clear your codes before worrying about the misfire codes. If they do persist after that, compression test the engine - adjacent cylinders misfiring can point to a head gasket failure between cylinders. Note that the most likely causes of the P0117 code are the sensor itself is faulty, or the wiring is damaged / shorted.

 

installed new ECT sensor, code is still there $61 for sensor , so i will check wiring, 5 volts is there ,which i should have done in the first place, Mr google said maybe

• Faulty engine coolant thermostat, any ideas, gauge on dash is in the middle