Cold start, IAT, ECT question.

[bmax]

Hopefully a simple question.

In the colder days of winter, I logged my cold start AFR's and corrected the ECT multiplier table A0008, COS5.

I had all the ECT temps from around 15F and up holding at 13.75 AFR.

Now when I go and start the car with 50F plus ambient temps, its holding around 12.5 AFR. Richer than I want.

I am running closed loop/MAF/VE so once it goes into closed loop the trims handle the rest. I am looking for a way to get repeatable cold start AFR in all weather conditions.

Thanks in advance.

Brad

[joecar]

Hi Brad, what does your A0008 look like...?

[bmax]

Joe,

Looks like this.


10094

90 and up is all 1s

[bmax]

Joe,

Put new IAT and ECT sensors and things are working OK again.

Thanks

Brad

[joecar]

Cool :cheers: that was easy.

How many miles were on your old sensors...?

[bmax]

Both had over 100,000 miles on em. :)