95gst running rich bad idle

[smileyltu75]

Ok i traced the problem to a fuel related issue i think. I removed the cat and ran a hiflow cat exhaust and did trow a cel. Now car runs like shit it idles bad then it dies but i can smell it getting alot fuel. Could the removed cat cause it to run rich and flood engine n choke it? Or could it just be the old fuel it had? It was sat down for few months and finally getting it fixed. Any help would be apreciated

 

[undefined0000]

A new cat wouldn't do anything but decrease back pressure, since you're boosted, it wont have any effect until you're hitting boost. Sounds like a bad O2 sensor messing up the afrs.

 

[smileyltu75]

Wich one though? The one after the cat converter or the one by exhaust manifold?

Well right now im sitting here in my car and trying start it. I can literally hear the pump coming on. But i also hear the injectors too flooding it. And not letting it start it wants to though. Then if it starts id die back again. I know it could be alot things but where start?

 

[snowborder714]

The front o2 sensor (in o2 housing) controls fuel trims.
The rear o2 sensor (in exhaust behind cat) just verifies that the cat is working. If you removed the cat but still have this sensor hooked up, it could be throwing a code.

 

[smileyltu75]

Could that code also make the car run way to rich? Or could it just be first o2 sensor?

 

[snowborder714]

Go get it read and see what is throwing it. I could guess all day, but you won't know until you get it read.

 

[greydelta38]

Downstream O2 sensor. It wouldn't hurt to check the upstream but it sounds more like a DS.