Cold Start Issues

DevineCRX · Post by **DevineCRX** » Wed Nov 19, 2003 9:21 pm

Is there any way to tune the s200 so that the car will idle when it is cold outside? The car has a h22 with a euro type r manifold and 70mm Ericks racing throttle body. The throttle body does not have a FITV so the car will not idle when the weather is cold really cold. I need to keep my foot on the gas for a minute then the car will warm up to idle on its own. Anyone have any ideas?

DaX · Post by **DaX** » Thu Nov 20, 2003 8:27 am

FITV? sorry to sound naieve...

I think I remember hearing some people say that they had some cold start issues and unplugging the charcoal canister purge valve's electrical connection fixed it. Dunno...it's worth a shot.

DevineCRX · Post by **DevineCRX** » Thu Nov 20, 2003 9:04 am

FITV = Fast Idle Thermal Valve

hmm, the purge valve is already disconnected...Ill try and plug it back in and see if it makes a difference..

DaX · Post by **DaX** » Thu Nov 20, 2003 12:37 pm

Ah, I had a problem with my FITV...but that's besides the point.

Perhaps upping the IACV duty cycle?

DevineCRX · Post by **DevineCRX** » Thu Nov 20, 2003 12:57 pm

ill give that a try as well...thanks

jbbauer · Post by **jbbauer** » Mon Dec 01, 2003 9:14 pm

have you found your cure yet? .. I'm having this problem as well. Runs great except the first minute or two after startup. Sometimes it starts good and sometimes I have to keep my foot on the gas

I do have an O2 meter showing that I'm running rich, 10-11... after a few minutes it's idling perfectly, 14.7

turbosi92 · Post by **turbosi92** » Tue Dec 02, 2003 6:23 am

jbbauer wrote:have you found your cure yet? .. I'm having this problem as well. Runs great except the first minute or two after startup. Sometimes it starts good and sometimes I have to keep my foot on the gas

I do have an O2 meter showing that I'm running rich, 10-11... after a few minutes it's idling perfectly, 14.7

Turn the cold start enrichment down.

jbbauer · Post by **jbbauer** » Tue Dec 02, 2003 8:19 pm

thanks turbosi92,

Is the "cold start fuel enrichment" something I configure from Hondata's RomEditor software?

turbosi92 · Post by **turbosi92** » Wed Dec 03, 2003 6:43 am

jbbauer wrote:thanks turbosi92,

Is the "cold start fuel enrichment" something I configure from Hondata's RomEditor software?

Yes.

jbbauer · Post by **jbbauer** » Wed Dec 03, 2003 8:34 am

where is this in the RomEditor, I looked last night and couldn't find where you configure "cold start fuel enrichment"... thanks again

turbosi92 · Post by **turbosi92** » Wed Dec 03, 2003 11:26 am

jbbauer wrote:where is this in the RomEditor, I looked last night and couldn't find where you configure "cold start fuel enrichment"... thanks again

It is on the same tab as the injector multiplier. 2nd from the bottom. I can't tell you for sure until I get home nor can I tell you the name until I get home.

jbbauer · Post by **jbbauer** » Wed Dec 03, 2003 7:15 pm

Sure enough, I found too possible candidates:

ECT Enrichment and Post Start Enrichment, right where you said they'd be. THANKS! I'm guessing my problem is more related to Post Start Enrichment because sometimes I have the problem when the car is still warm.

What AFR range is your car usually at on a cold start and/or post start? I'm assuming 10AFR is way too rich?

turbosi92 · Post by **turbosi92** » Wed Dec 03, 2003 8:49 pm

jbbauer wrote:Sure enough, I found too possible candidates:

ECT Enrichment and Post Start Enrichment, right where you said they'd be. THANKS! I'm guessing my problem is more related to Post Start Enrichment because sometimes I have the problem when the car is still warm.

What AFR range is your car usually at on a cold start and/or post start? I'm assuming 10AFR is way too rich?

Yes, those are it. I have mine set at .57 but I have 800cc injectors. Mine idles at 12 to 1.

jbbauer · Post by **jbbauer** » Thu Dec 04, 2003 12:10 am

So you set both of them to .57?

I guess I'll aim for 12AFR and start with .8

Thanks again !

turbosi92 · Post by **turbosi92** » Thu Dec 04, 2003 6:38 am

jbbauer wrote:So you set both of them to .57?

Yes