I've got po152 code. I hagve traced the wiring from all the sensors to the ECM everything is good I even got rid of my Bosch O2 sensors. I got ntk. There are no exhaust leaks. Replace the gaskets from egr tube and new egr. New pcv . .I'm struck

 

Plug in with a scanner, and see what the sensor is doing. If it is switching properly, you may have a leaky injector.

Welcome to DF!

 

Thank you. The po152 code will pop up pending within 4 min of starting the car. Forgot to mention that after it warms up I also get a PO137. Have gotten a p300 sometimes. Random missfire. Have also replaced the platen gaskets. How can I tell I have a bad injector.

 

Test fuel pressure with the engine off. Hook up the gauge, turn the key on, pressure should come up. See how quickly it bleeds off. If it goes quick, you may have a bad injector.

Of course, you are getting essentially the same code, for two sensors. That sounds a lot like a wiring problem to me. Especially if you have already replaced the sensors.

 

I have completely took all wires loose and checked from sensor to PCM. All wires are good. Also I don't have a fuel pressure gauge but gonna go get one. Also replace the plentm gasket so injecters was under pressure and I didn't see them leak. Pressure should be 58 I believe.

 

So, maybe the engine really IS running rich.... question becomes, why..... no matter how you slice it, it's too much fuel. If the sensors are good, and the wiring is good, then the problem has to be elsewhere......

 

Fuel pressure cause this? EVAP cause this?

 

I am not familiar enough with the engine to even hazard a guess......