I'm having issues with cold start and warm up. I have a microsquirt from efi source. I'll start by listing my engine details
1992 5.0
speed density
gt40p heads
explorer intake with IAT sensor in #5 runner
GM IAT and CLT
Anderson N41 cam
Ford 24lb injectors
AEM 30-4110 wideband
Timing verfied with timing light
180F T-stat
I've been working on this project for a few months now off and on. It idles great warm, good drivability, and pulls nicely. I had warm up dialed in closed loop, then build my closed loop following a91what's channel. I thought i was getting somewhere, but then today it started acting strange on cold start. My idle advance kicks in at 100F, but before then, it is all over the place. The strange part is, during initial warm up, my timing is jumping around and i don't know whats triggering it. When I check my rpm and map in data-logs, it does not match what my ignition table is calling for. My timing should be flat at 18 from 850-1200 rpm, and its jumping high as 20, and low as 14, but i cant figure out were some of these values are coming from. Also, something is triggering ASE again after the engine is already started. Once the engine gets to about 100F and the idle advance come on, everything settles out. I could not find anything that stands out that would be causing this. I know im a bit lean when cold, but autotuning WUE when this is happening goes all over the place. It doesn't seem to be closed loop related from what i can tell. I have not had a chance to switch back to open loop. Its so warm here, i don't get many opportunities to start it cold. I can get my garage down to 75-80 at the coldest.
I've tried getting myself to this point without posting to ask silly question, but this one has me stumped. Ive attached my tune and datalog of a cold start, if someone could take a look, it would be greatly appreciated. I was completely new to tuning 2 months ago and have come a long ways, but im sure there are things that are off. I will appreciate all help and suggestions. Thanks guys
1992 5.0
speed density
gt40p heads
explorer intake with IAT sensor in #5 runner
GM IAT and CLT
Anderson N41 cam
Ford 24lb injectors
AEM 30-4110 wideband
Timing verfied with timing light
180F T-stat
I've been working on this project for a few months now off and on. It idles great warm, good drivability, and pulls nicely. I had warm up dialed in closed loop, then build my closed loop following a91what's channel. I thought i was getting somewhere, but then today it started acting strange on cold start. My idle advance kicks in at 100F, but before then, it is all over the place. The strange part is, during initial warm up, my timing is jumping around and i don't know whats triggering it. When I check my rpm and map in data-logs, it does not match what my ignition table is calling for. My timing should be flat at 18 from 850-1200 rpm, and its jumping high as 20, and low as 14, but i cant figure out were some of these values are coming from. Also, something is triggering ASE again after the engine is already started. Once the engine gets to about 100F and the idle advance come on, everything settles out. I could not find anything that stands out that would be causing this. I know im a bit lean when cold, but autotuning WUE when this is happening goes all over the place. It doesn't seem to be closed loop related from what i can tell. I have not had a chance to switch back to open loop. Its so warm here, i don't get many opportunities to start it cold. I can get my garage down to 75-80 at the coldest.
I've tried getting myself to this point without posting to ask silly question, but this one has me stumped. Ive attached my tune and datalog of a cold start, if someone could take a look, it would be greatly appreciated. I was completely new to tuning 2 months ago and have come a long ways, but im sure there are things that are off. I will appreciate all help and suggestions. Thanks guys