My car doesn't idle when started in the Morning

P0120 - Throttle Position Sensor (TPS) circuit malfunction.

P0161 - Heated HO2S sensor heater circuit, can be either a bad sensor or missing power supply.

P0300 - Random cylinder misfiring detected. Possibly related to P0120 and P1120.

P0450 - EVAP pressure sensor sensor malfunctioning.

P1120 - Accelerator Position sensor ciruit malfunction.

P0120 and P1200 are the main problems you need to address before you go to others. Both are critical for engine performane and idle controls.

These problems were not mentioned in earler post so I guess they were a result of you working on the vehicle. Recheck the wiring connections and ensure they are clean and secure. Ensure connectors are correctly plugged in and you would need to perform diagnostics if you can't find any faults, which would be easier if you have a scan tool.

Here are the schematic for the O2 sensors. Ensure you have battery voltage to the Black/Red wires with ignition switch turned on.

Yes, you can donate via Paypal. Tell whomever is doing this to click this post and click the " Upgrade Question " link to proceed with the donation.

I will send the engine management wiring schematic set to your email.

Thank you for the donation.

My internet connection to our database is rather lagging presently so it might be a while before you get the documents.

Refer to my February 15 reply for the vacuum diagrams.

Those are in PDF mode so you should be able to enlarge the view. Sorry I don't know how to make them larger when converting from Onenote to Acrobat and if you know how, tell me and I will see what I can do.

P0130, P0133, P0150, P0153 and P0161 are all faults with the HO2S circuits. Either you have a fault with the wirings or the sensors are not working.

None of the codes are related to the throttle controls which do not need any programming. The computer would relearn after some running and the O2 sensor codes are not going to make that occur. You need to get them resolved first.

If you had removed the TPS or meddled with the throttle control stop screws, recalibration would be necessary.

There are many things that needs to be taken into considerations but I would suggest getting the trouble codes rectified first. No point in going on a wild goose chase.

Don't worry about that first. Get the O2 codes resolved first.

I have sent the files to you, hope they come out better. I thought pdf files can be enlarged?