I'm posting this here as I bought a s300(version 3) to try and figure out why my car is running rich and having other fuel issues. A bit about the issues...on a cold start up the car sounds like it has VTEC-Killers and as soon as you go to give it a bit of gas under load(car in gear) it falls flat on it's face. And then just to get it going you have to hold the throttle open/at 2K rpms till it car idle a bit better and even then it sounds like ****. If you drive it, it seems to be better but will randomly bog in/out for a while. Now about the car 94 gsr bolt on's & 255 walbro other then that it's stock fuel pressure is at 45psi all new ignition system(replaced with new OEM parts). my s300 should be ready this week so what should I bet looking for/at MAP reading or what sorry not familiar with s-manager yet car is currently running on a chipped p30 from a reputable tuner around here.

 

bump...

 

Was this professionally tuned or are you trying to tune it yourself?
Whats the AFR on cold start?
Have you reduced the cold start enrichment fuel trim?

 

It has a basemap loaded on it right now similar to the chipped p30 map.


I don't have a wide band hooked up, does it show on the "parameters" or "sensors" sheet of smanager ?

How would I do that ? sorry just got the thing this weekend and have 0 prior experience with this stuff.

 

You need a wideband to tune fuel.
It sounds like youre over your head. I recommend you take it to a professional.

 

i'm not sure how you're trying to tune it without even knowing what a wideband is.

 

sounds more like a spark issue, but you could just have a bad main relay as well - assuming you checked and fixed the engine codes - right?

 

I know what they are I have one even (AEM uego) I just don't have it hooked up.

there were no codes I did every trick imaginable for steadying the idle, it just roams/hunts when the car can actually get going.


also a bad main relay can do this ? it cranks every time just can't stay running for an unknown reason idle is set at 1.2K. I think the title should state ALL THE TIME as it was really warm yesterday and even after a good long drive the engine being hot and all it still wanted to die.

 

car's not running rich at all....played with the idle screw things are better-ish, going to get a new distributor cap that's the only thing that isn't new