p0171, p0174

[2002 v6 camaro uncharged]

Fuel trim system lean bank 1 and 2. What the heck would cause this? Right now my car idles like crap and smells like it is running real rich but drives fine.

[camaroman1181]

cheapest and easiest thing i cna think of would be to change your fuel filter.. it could be blocked and not letting enough fuel to your engine. However, it could also be your mass air flow sensor giving a bad reading or a fuel pressure regulator going bad or even both of your O2 sensors, tho the O2's tend to set off other codes as well.. check your vaccuum lines on the fuel pressure regulator to make sure it didnt pop off or get a hole in it... however, givin your mod list, it could just be one of your mods throwing off the computer... oh, and one last thing, are you running teh jet chip with the supercharger??? i didnt htink that those chips were recommended for use on FI applications??

[Question]

When you have lean codes for both bank 1 and bank 2 you probably either have a vacuum leak somewhere or you MAF sensor is dirty or on its way out. You could also possibly have a fuel problem if you notice a lack of performance. So change your fuel filter if it has been awhile.

[2002 v6 camaro uncharged]

Well, for the heck of it I unplugged my MAF and drove to work. Ran HPT scanner and the car ran perfectly normal. The only codes the scanner read after my drive were the ones for the unplugged MAF, no more lean codes. I scanned the car all the way to work for a total of 45 minutes. So, maybe it is my MAF .
Can anyone tell me wich sensors or if any become inactive when the car goes into speed density.

[2002 v6 camaro uncharged]

Now with the MAF unplugged it will not stay running in the morning. Stalls out every time I step on the clutch until it warms up then it runs great. All day Monday and in the morning Tuesday ran fine with it unpluggged. I have no idea what is wrong Can someone tell me what would cause this running in speed density?

I guess I will start searching for a vacuum leak now.