car running way too rich out of nowhere?

[chasmat2316]

Drove my GN today ran great- then shut it off & restarted about an hour later, now the car is dumping way too much fuel? Car has a Fast bank to bank. I tried to pull alot of fuel out of the fuel table, but didn't seem to make a change- WTF? A/F is pig rich & won't change. Car won't run in open loop at all? looked at main dash and sensors seem to be working? Why can't I pull fuel out to make it run? Why rich all of a sudden out of nowhere?

 

[TurboBuRick]

Take a close look at the map signal. If that checks out, you may have a blowen fp regulator diaphram or a hung injector..

 

[JCotton]

Drove my GN today ran great- then shut it off & restarted about an hour later, now the car is dumping way too much fuel? Car has a Fast bank to bank. I tried to pull alot of fuel out of the fuel table, but didn't seem to make a change- WTF? A/F is pig rich & won't change. Car won't run in open loop at all? looked at main dash and sensors seem to be working? Why can't I pull fuel out to make it run? Why rich all of a sudden out of nowhere?

Give me a call at the shop, sounds like you lost the map sensor...

 

[chasmat2316]

I pulled up the main dash & all looked ok? looks like all injectors stuck open? I was thinking maybe injector driver - or cam sensor? What do ya think? Thanx for all info! Charlie

 

[chasmat2316]

Well it turned out to be the 2 week old magnafuel pressure reg! Leaking fuel out of the boost ref port!