Sr stinking like gas, NOTHING changed! help im stuck at work!

[ultimateirving]

So i leave work for my lunch break head over to mcD's to get some grub, and on the way i notice im running real rich.. i can smell the fuel and my wideband is reading 11-12 with very little load. Getting some loud backfires while decelerating. Idle is terrible struggles to keep running idle bounces from 100-1100 and stalls outs completely if i dont tap the gas. i have been running fine for the last month or so with a steady idle. havnt made any changes, what could have gone? im thinking random vac/boost leak which i can test when im off work. also i know the CTS going bad can cause similar issues. any extra thoughts would be appreciated since im at work and would like to make it home in one piece.

Mods: Sr20det with t28, stock maf injectors/ecu. walbro pump. fmic and freddy intake.

[KiLLeR2001]

Either the CTS or maybe an injector isn't functioning properly. Pull the ECU for codes.

[ultimateirving]

Either the CTS or maybe an injector isn't functioning properly. Pull the ECU for codes.

yeh ill check the injectors 4 sure,my ecu has no light on it so im kinda stuck there

2 hours left!! plz moar

[KiLLeR2001]

It should still blink the codes in the gauge cluster check engine light.

[ultimateirving]

It should still blink the codes in the gauge cluster check engine light.

negative cel in cluster never illuminates, i think i have to run a wire or relay or something to the cluster to give it a signal.

[RHDskyline]

Few things to check.

Fpr could be no good. If your running a stock FPR (fuel pressure regulator) try and replace it. If its aftermarket, replace with a stock one.

O rings on injectors. Fuel could be leaking passed one of the injectors. Its usually only 1 injector it happens too.

Check your oil. Does your oil smell like fuel? I sure hope it doesn't. But if it does i bet it has something to do with your fuel pressure.

[mattsil80wis]

sounds like a vac leak....a coupler could be torn....take starting fluid and spray it around your couplers and see if the idle jumps up

[colombianbryan]

all those above could be correct but also check your exhaust manifold. i was having a strong smell in my car too and when i would give it gas i'll have backfire and a crappy idle also. it just happens that i guess with pressure over time it loosened the 4 bolts and had a terrible exhaust leak. worth a shot

[ultimateirving]

thanks for all the input i checked what i could while at work didnt see anything obvious. drove it home and now its back to normal. idle was fine and rich condition gone. this sucks cuz i hate intermittent engine problems.

[st280]

Get a fuel pressure gauge. Has helped me out quite a bit in knowing if bad FPR, bad injector O-rings, etc.

[Jared0934]

just throwing this out there because I had the bad idle/stall problem as well. I bought some carb cleaner and took off the the idle air control valve and cleaned it out. RPM's at Idle stayed steady and strong after that. lol for a while I set my ecu to maintain idle at 1300rpm just so I wouldn't stall all the time.

edit: Forgot to mention earlier that there were also a few problems we smoothed out on my fuel maps.. if you have a ecu that you can look into that you might want to check it out.