po172, and po175....

Reply Subscribe

Thread Tools

Search this Thread

Jul 17, 2005 | 01:35 PM

natronathon

Thread Starter

TECH Fanatic

Joined: May 2004

Posts: 1,030

Likes: 0

From: Wichita KS

po172, and po175....

could this be caused by bad spark plugs? I also know my maf has been reading low, but i had the maf tables readjusted to bring the readings more into line. Any suggestions?

Jul 17, 2005 | 02:43 PM

DanaliHD

TECH Addict

iTrader: (5)

Joined: Jun 2003

Posts: 2,978

Likes: 0

From: New Hampshire

i've asked this question before and gotten no good answer. i'm thowing the same 2 codes right now. hopefully someone will have an answer

Jul 17, 2005 | 03:06 PM

jlrz28

10 Second Fun Car

iTrader: (7)

Joined: Nov 2002

Posts: 2,045

Likes: 1

From: Pearland, Tx

got the code also, 20-30 miles after removing the screen out of the MAF

Jul 17, 2005 | 03:57 PM

SUPRYZE

On The Tree

Joined: May 2005

Posts: 132

Likes: 0

From: North Carolina

P0172 and P0175 are fuel trims rich, banks 1 & 2. Spark plugs won't do that.

If you know your MAF is reading low or is modified in any way, then the MAF needs to be re-calibrated.

Jul 17, 2005 | 07:05 PM

natronathon

Thread Starter

TECH Fanatic

Joined: May 2004

Posts: 1,030

Likes: 0

From: Wichita KS

Quote:

Originally Posted by SUPRYZE

P0172 and P0175 are fuel trims rich, banks 1 & 2. Spark plugs won't do that.

If you know your MAF is reading low or is modified in any way, then the MAF needs to be re-calibrated.

i know the maf was origionally reading low, but i had a knowledgeable tuner help me get it much closer than it was previously, yet it never threw a code before, only after... i cleared the codes, maybe they will stay gone...

can the problem be fixed with VE tuning?

Reply Subscribe