idles fine, drops, then slowly rises

Tuning concepts, methods, tips etc.

Moderators: jsmcortina, muythaibxr

Post Reply
graverd
MS/Extra Newbie
Posts: 2
Joined: Mon May 18, 2015 6:33 am

idles fine, drops, then slowly rises

Post by graverd »

Car: 1994 Miata
ECU: Megasquirt2

I am am beyond confused with what I need to do to get my start up idle working correctly. I tried editing the ASE and WUE but neither seem to help. Here is what is happening, hopefully someone can point me to the settings i need to adjust.

The car starts and idles at 1100 rpms when its at around 86 degrees coolant temp (this is good). The car stays at this idle as the temps rise but once it hits 92 degrees it makes a noise and drops right down to 700, sometimes even stalling. If it doesnt stall the RPMs will slowly rise, very slowly, until it gets back up to 1100 rpms and everything is jolly again.

I datalogged this issue, it is pretty long but it shows the entire cycle. If someone can please take a look and point me in the right direction I would greatly appreciate it. Attached is the tune and the datalog
Post Reply