When's the best time to do this? In the evening when I get home? In the morning right before I start her? I was just going to do it this evening and then see what happens in the morning. Will that work?

 

I don't think it matters when you do this. Once the ECU is reset, it goes to a bunch of default paramaters and will be that way till it "learns" new ones and this won't happen till you drive it some more.
As an afterthought, I now recall having started a thread about a similar observation of my own in our local forum. Please have a look:

https://www.s2ki.com/forums/showthread.php?...&threadid=77283

As an update to this thread (note the dates), the last two mornings after my night shift, the temp has been around that magic 5-7*C mark when I started the car. The car has indeed learned and it starts normal now. FYI.

From this experience, I would say either allow the car to learn when it has the "hiccup" or reset the ECU so the new conditions don't present such a "learning impediment" for it. Either way, it's just two different routes to the same goal.

 

Cool, thanks bro.

 

I also have this problem sometimes.I s it recommended to reset the ecu if you have a v-afc?

 

[QUOTE]Originally posted by MacK430
[B]I also have this problem sometimes.I

 

[QUOTE]Originally posted by xviper
[B]
As I don't have a vafc, I don't have first hand experience but this is what I've read on another thread.

 

Well 2 mornings ago I tried pulling the Backup fuse for a few minutes and I am still having the same problem. Tomorrow I will try either priming the fuel system by turning the ignition key a few time prior to start. Or I'll try pumping the gas once before starting as well. Is this an issue that needs to be dealth with under warranty. In other words, is this indicating something that might fail once the car is out of warranty, but well under the liftime the part should last?

 

[QUOTE]Originally posted by baldy74
[B]Well 2 mornings ago I tried pulling the Backup fuse for a few minutes and I am still having the same problem.

 

Does the S2000 have an Electronic Air Control Valve (EACV) to act as the choke? My '91 Integra had one, and if it failed, the car wouldn't start normally.

 

Well, I'm still having the same problem, only now it stalls more often that just catching. I dropped it off at the dealership (Team Honda) all last week and they were unable to determine what the problem is. He said they tried reprogramming the ECU - didn't work. Then they thought it might be a bad fuel backflow valve (?, something that keeps fuel pressurized near the engine after the car is turned off). Then they took readings off of everything at startup and said they are all normal. He said they don't have a clue what's causing it. I guess the next thing they are going to do is have some special tech come out and take a look at it. All I know is that they better fix the damn thing. At one point he even tried blaming it on my amp. I quickly shut him down on that one, seeing as how when my amp was installed the fuel line was hit, so I had THEM replaced the fuel line and do the spark plug TSB at the same time. I asked him if they thought any of THIS work could be causing anything. Of course he dropped that subject real quick.

Well, any ideas guys? I'm trying not to get stressed about this, but I have a feeling that they are going to try and brush me off as usual and play the 'ol "since we don't know what the problem is, we don't have to fix it" BS. If anyone has any feedback, that would be great. TIA, guys.