Low end Sputter

Reply Subscribe

Thread Tools

Search this Thread

Dec 29, 2009 | 04:38 PM

Midnightnova

Thread Starter

Staging Lane

iTrader: (1)

Joined: May 2007

Posts: 68

Likes: 0

From: Houston, TX

Low end Sputter

Hey was seeing if anyone could help having a low end sputtering problems and part throttle. Not sure if it is the tune or sensor problem or what. It runs great at WOT. It is a 5.3 and I just did a cam swap in it. The check engine light came on the other day it was the MAP sensor and TP sensor. Tried to save DTC's but lost the file. I cleared them they have not come back yet. Not sure what to do please help.

Dec 30, 2009 | 03:14 PM

stevensLS1

TECH Addict

iTrader: (2)

Joined: Jun 2004

Posts: 2,303

Likes: 0

From: houston tx

Anyone? Could it possibly be a MAF issue? THe Maf sits basically right after the T.B

Dec 30, 2009 | 04:28 PM

Midnightnova

Thread Starter

Staging Lane

iTrader: (1)

Joined: May 2007

Posts: 68

Likes: 0

From: Houston, TX

Pulled plugs very black.

Dec 30, 2009 | 07:41 PM

Midnightnova

Thread Starter

Staging Lane

iTrader: (1)

Joined: May 2007

Posts: 68

Likes: 0

From: Houston, TX

Do I need to post my tune or some scan files. Can anybody help me please???

Jan 2, 2010 | 08:25 AM

Midnightnova

Thread Starter

Staging Lane

iTrader: (1)

Joined: May 2007

Posts: 68

Likes: 0

From: Houston, TX

Here are the DTC's.

Attached Files

sputter problem 12-31.txt (1.2 KB, 98 views)

Jan 2, 2010 | 09:14 AM

69LT1Bird

11 Second Club

iTrader: (1)

Joined: Sep 2007

Posts: 2,310

Likes: 6

From: Lapeer, MI

The code is related to a vacuum leak. Check everything you had off for the swap, check the MAP seal, PCV hoses etc.

Gearchatter.com has codes, they aren't for the truck 5.3 but OBD II codes are generic. Take a look over there.