Code 25 and 26 caused by CPS?

[Angry7M]

I was getting code 12. 25, 26. Code 25 and 26 means running rich and lean. So I replaced the O2 sensor since some wiring on the O2 was messed up( bought a Denso O2), to fix code 25 and 26. Code 25 and 26 came up again, and code 12 usually takes a while to come up(it will eventually come up again). Now that I know its not my O2 sensor for fault code 25 and 26. Can my CPS be causing code 12 25 26? The wring on the CPS is very hard(toasted) and it has alot of oil in the housing.

Also sometimes my car wont start it clicks but the starter will crank the engine alittle till it starts. Pretty sure its the starter contact points.

 

[Angry7M]

Anyone???

 

[jdub]

The code 12 is caused by the CPS or it's circuit (most likely wiring in your case) or a starter signal circuit.

The trouble areas are more varied for codes 25 & 26:
- Injectors or the circuit
- Fuel pressure
- Air Flow Meter
- Air Intake System
- O2 sensor or the circuit
- Ignition System
- Water Temp sensor

Doubtful fixing code 12 will impact the other two.

 

[Nick M]

Are you done putting parts on the car without diagnostic work?

A lazy oxygen sensor can cause a problem. So might a unit mounted too far down stream. Is your car stock? Your ECU is trying to correct a problem.

 

[Angry7M]

Are you done putting parts on the car without diagnostic work?

A lazy oxygen sensor can cause a problem. So might a unit mounted too far down stream. Is your car stock? Your ECU is trying to correct a problem.

I just replaced the O2 sensor since the stock one on the car was no good anyways. So im not just throwing parts at it.

My mods are
10 psi on stock CT
3" Downpipe
2.5" intercooler hard piping
K&N intake
No Catalyzer
And thats it, I think.

Stock Turbo Elbow.

 

[Angry7M]

The code 12 is caused by the CPS or it's circuit (most likely wiring in your case) or a starter signal circuit.

The trouble areas are more varied for codes 25 & 26:
- Injectors or the circuit
- Fuel pressure
- Air Flow Meter
- Air Intake System
- O2 sensor or the circuit
- Ignition System
- Water Temp sensor

Doubtful fixing code 12 will impact the other two.

I do remember once a mechanic I took it to, telling me that it had low fuel pressure. He told me it was probably my fuel pump. I haven't done the fuel pressure test though, since I couldn't find the fittings to hook up my fuel pressure tester to the supra.