Hi purchased a diag lead and i got these readings not sure what to make of them car does have problem starting from cold and hot can stall till warm, but runs fine nice and smooth power seems fine.

 

Idle RPM 988

Closed Throttle Position

TPS 0.44-0.46

Timing set at 35 Deg

IACV-AAC/V 90%

Injector Pulse 2.79 msec

Injector Duty 2.30%

A/F Alpha 100%

Mas Air Flow 1.36v

 

Thanks Tony

I take it those readings were taken when cold. Repeat when up to temperature.

Yes the car had not warmed up will do again tomorrow.

 

Thanks

Yup, coolant was below 40°C :smartass:

 

Timing will sit at 35° until engine temp hits 40°C. That is fine, nothing wrong there.

 

With regards to the idle speed & AAC voltage, is it running a manual or automatic ECU? Were the readings taken immediately after starting or had it warmed up a bit?

Is the answer 15 hahahaha

Is the answer 15 hahahaha

 

:lol: :lol:

Yeah temp was about 15. It is an auto

I could not wait till morning here we go the correct info

 

Idle RPM 870

Closed Throttle Position

TPS 0.42-0.44

Timing set at 15 Deg

IACV-AAC/V 15%

Injector Pulse 2.30 msec

Injector Duty 1.65%

A/F Alpha 103%

Mas Air Flow 1.26v

M/R F/C MNT LEAN

O2 Sensor 0.56 V

Ok. Your idle is too low when cold. At 15°C it should be at 1213 RPM, at 30°C it should be 1200 RPM. Assuming it's not been mapped differently, the AAC valve is unable to open enough when the engine is warming up, hence the stalling and 90% value. Once the car warms up, the engine requires less additional air to maintain idle conditions, hence AAC% decreases to obtain the correct idle RPM.

 

However, readings when hot are spot on (RPM is a little high). Inj pulsewidth difference between hot & cold is good, timing, AAC, MAF voltage are all where they should be for a stock fuel system.

 

The last two are of no help as they are transient values (constantly changing due to lambda feedback).

 

If you adjust the AAC to raise the idle RPM and stop it stalling when cold, it will idle high when warm. I would suggest removing & cleaning the entire IACV assembly.

Thanks nice to know those settings are ok, hope weather holds will clean the IACV assembly.

Thanks again.

here is mine looks the same as you on conzult I have removed my IACV THO

Yes looks the same is it worth buying the program.

if you can find a copy seem you can only order it from the usa