L67 wont Idle now stalling HELP!!!!!!!

[vsl67]

My l67 has started to idle rough when cold now its to the point its hardly driveable ,It is loping badly like it has a big cam
It is throwing codes 23 & 32 one is a Maf sensor code but Im not sure if the maf would cause this ,I have already searched for vaccuum leaks with not luck and tried another IAC with no luck help anyone

 

[acarmody]

Yeah the MAF could definitely cause this. If it doesn't know how much air is going in than it ain't going to go so well.

Code 23 is Air Temperature Sensor.

 

[acarmody]

AIR TEMPERATURE SENSOR
CODES 23,25,26

Codes 23, 25
1. Disconnect the air temperature sensor wiring harness.
2. With the ignition On, check the voltage between the harness connector terminals.
If the voltage is not approximately 5 volts, check the wiring between the ECU and the air temperature sensor for continuity and shorts. If no fault can be found, renew the ECU.
3. Check the resistence between the sensor terminals, and compare to Specifications.

Air temperature sensor resistence:
At -5°C...........................12.414 k/ohms
At 10°C............................5.729 k/ohms
At 20°C............................3.555 k/ohms
At 30°C............................2.268 k/ohms
At 40°C............................1.483 k/ohms
At 70°C............................0.475 k/ohms
At 90°C............................0.245 k/ohms
At 100°C..........................0.180 k/ohms
At 110°C..........................0.135 k/ohms


AIR FLOW SENSOR (CODE 32)
1. Disconnect the air flow sensor wiring harness and check the voltage at the harness connector terminals A and C. There should be battery voltage at Terminal C and 4-6 volts at Terminal A.
2. If the voltage is not correct at terminal C, check fuse No. 33 and the associated wiring.
3. If the voltage is not correct at terminal A, check the wiring between the air flow sensor and the ECU terminal D1 for continuity and shorts. Renew the ECU if no fault can be found.
4. Check for continuity to earth at the air flow sensor harness connector terminal B and the ECU connector terminal A1.
5. Ensure the air flow sensor wiring harness is routed clear of the high tension leads. If all other components are satisfactory and the codes reset, renew the air flow sensor.

 

[vsl67]

Problem fixed it turned out to be the MAF even though it was doing a good impression of a bent valve/push rod or worn cam lobes