Update: still getting P0113.
Update again: Delphi MAF was bad. Bad part right out of the box. A friend looked at the OBD2 live data and said the MAF wasn't working properly. Paid for the Hitachi MAF that came with the housing (tube), 3x more, but it worked.

Might actually keep this car long term and fix the rear main seal/upper oil pan leak. That job at a shop would cost more than the car is worth.

This is an early 03 car and has a different MAF sensor to all the later cars. Couldn't get just the Hitachi MAF sensor on its own.

I ordered 3 MAFs to fix this. 1st was the wrong style, second didn't work, 3rd worked.

Odd thing. drivers window wasn't working, now it is. IAT sensor reading is around 5v. but the live OBD2data says -40 degrees C. I'm stumped.

Symptom: start, rough idle and die. NO CODES.

• Cleaned MAF and throttle body. (forgot to reconnect vacuum line, came into play later)
• Didn't think I was hearing the fuel pump prime (not 100% sure in hindsight) but I Replaced fuel pump. Same issue.
• No MAF code, but thought I'd disconnect MAF to see if anything changed: Bingo.
• Disconnected MAF sensor, car ran, but rough, like it didn't have a MAF sensor. It threw a bunch of codes due to MAF unplugged. Cleared codes, plugged it in, ran and died. Replaced MAF sensor.
• I then got a P0113 code and car was still running rough. I tested voltage to the IAT sensor wire in the MAF plug and it was getting about 4.9v (service manual said about 5v ok). Finally realized a vacuum hose to the throttle body was disconnected. Operator error. Plugged in Vacuum line and it's running fine again.
• I was about to find/take out the ECM when I heard the loud vacuum noise.

Hope this helps someone in the future. Good site, I've used it a lot for troubleshooting.

Thanks.

https://www.nicoclub.com/service-man...F2003%2Fec.pdf

IAT Diagnostic Procedure ABS0005U from service manual for reference:

1. CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect mass air flow sensor (intake air temperature sensor
is built-into) harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between mass air flow sensor terminal 5 and
ground.
Voltage: Approximately 5V
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connectors.

 

Good on you for "membering-up" to share your experience!