Cold start on cold morning ok. On warm morning, not so much...

[EfiniX]

I'm sitting in my car this morning warming it up and unlike was previous few weeks of morning, no issues. The difference: it's fairly cold at the moment.

As the weather began to warm, I started getting hard starts. Car would fire up OK, then idle for 10-15 seconds, at which point it would go lean, start to surge with the idle dropping lower and lower, then die. It was possible for me to lightly press the gas and get through this. Now if I let it die, I could fire it right back up and it would be fine.

I've checked the ISC, ECU, BISS, and even bumped up the cold-start enrichment in link. FIAV? I just don't know...

 

[transparentdsm]

coolant temp sensor.

 

[EfiniX]

Looks fine in link.

Warm day cold start stall log

Or should I be looking at a different value somewhere?

 

[mitsuturbo]

Quoting EfiniX:
I'm sitting in my car this morning warming it up and unlike was previous few weeks of morning, no issues. The difference: it's fairly cold at the moment.

As the weather began to warm, I started getting hard starts. Car would fire up OK, then idle for 10-15 seconds, at which point it would go lean, start to surge with the idle dropping lower and lower, then die. It was possible for me to lightly press the gas and get through this. Now if I let it die, I could fire it right back up and it would be fine.

I've checked the ISC, ECU, BISS, and even bumped up the cold-start enrichment in link. FIAV? I just don't know...



My car does pretty much the same thing. If it's a fresh start after sitting overnight, it usually dies about 8 seconds after starting up. If i use my remote start, it fires up, runs for a few seconds, and dies. Then it automatically starts again, stumbles a little bit and starts idling like it should on a cold start. Weird.

I barely drive it so i haven't put much time into trying to figure it out. I honestly thought it may have something to do with my externally mounted ISC. I'm not sure. If the car has been run in the past couple hours, it doesn't do it. I'll dig more into it once i get my new goodies installed.

 

[EfiniX]

Well, mitsu, you are certainly describing exactly what's happening with me.

Are you running speed density?

 

[MellowVR4]

Do you have the fiav deleted?

 

[transparentdsm]

Quoting EfiniX:
Looks fine in link.

Warm day cold start stall log

Or should I be looking at a different value somewhere?




cant view log, but if its reading correctly then its probably right.

 

[thomcasey]

Your voltage is dropping almost to 9 volts at times.

 

[mitsuturbo]

Quoting EfiniX:
Well, mitsu, you are certainly describing exactly what's happening with me.

Are you running speed density?



SD. Magnus cast. S90. FIAV delete.

 

[EfiniX]

Quoting thomcasey:
Your voltage is dropping almost to 9 volts at times.



It is, but that correlates with the drop in RPM's. I think it's a symptom, not causal. I don't have any voltage issues after the motor warms up a bit.

 

[EfiniX]

Quoting MellowVR4:
Do you have the fiav deleted?



I do not have my FIAV deleted. Is that really what could be going on here? I'm having problems on warm mornings, not cold ones.

 

[tektic]

Still have a fps in use?

 

[EfiniX]

I do have a FPS still in use.

 

[tektic]

That's life without a maf sensor. I'd guess your iat comp needs to be tweaked. Maybe send Kim a pm, he's the authority on SD but then again he writes his SD software. Doesn't use ecm link.