Need Some Help Bad

swilliams1005 · September 9, 2006

I ve been having check engine flashing at me but i knew what the code was P0175 Bank 2 Rich well just out of curiosity i scanned my truck again and now im getting P0172 and P0175 bank 1 and 2 running rich any reason this is going on,,read my other posts to see what items have been replaced,,,

http://www.gm-trucks.com/forums/index.php?...topic=44288&hl=

ChevyTech007 · September 13, 2006

A couple things to check. Pull the vacuum hose off the fuel pressure regulator and check for gas. Probably the most common cause of a rich condition is the mass air flow sensor. I see you have a K&N filter. The oil from the filter can coat the wires of the MAF sensor and cause all kinds of problems. Take the sensor off and spray the wires with carb cleaner and toss the K&N. There is a GM bulletin advising not to use a K&N.

skills4lou · September 13, 2006

Swilliams,

If you decide to get new injectors, I'd suggest using five0motorsports.com. $300 for a complete set (I just replaced all 8 in my 98 K3500 with the 7.4 Vortec). They work great, and are fairly easy to replace.

swilliams1005 · September 17, 2006

A couple things to check. Pull the vacuum hose off the fuel pressure regulator and check for gas. Probably the most common cause of a rich condition is the mass air flow sensor. I see you have a K&N filter. The oil from the filter can coat the wires of the MAF sensor and cause all kinds of problems. Take the sensor off and spray the wires with carb cleaner and toss the K&N. There is a GM bulletin advising not to use a K&N.

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I have heard about the problem with k and n and have removed it and cleaned the wire and still no help,,,i will check the vacum hose and repost on progress,,,

swilliams1005 · September 17, 2006

Swilliams,
If you decide to get new injectors, I'd suggest using five0motorsports.com. $300 for a complete set (I just replaced all 8 in my 98 K3500 with the 7.4 Vortec). They work great, and are fairly easy to replace.

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Thanks for the hookup i will definetly check into it if i have to replace them thanks,,