Results 1 to 7 of 7
11-11-2011, 01:33 PM #1
new guy here, i got a code 171 and 174
my 2000 silverado has been a little slow to start up latey. check engine light came on today. has a code 0171 and 0174, i looked them up and it's a lean right and left bank. i'm not that great on diagnosing problems so i did what i knew. i changed the fuel filter(was very dirty), cleaned the map sensor screen(just a little dusty), cleaned the throttle body, and washed& dryed the reuseable air filter(very dirty). changed the oil and filter while i was at it. cleared the codes and drove the truck. the check engine light came on again. so now what might it be? i had the fuel pump replaced about 3 months ago.when it was taking a while to start.
11-11-2011, 02:00 PM #2
5.3 l 3.73 l G80
BLACK BEAR CUSTOM TUNE
SNUGTOP l COLORMATCH l KATZKIN
11-11-2011, 02:42 PM #3
i replaced all 4 o2 sensors about 6 months ago when i had a calitic code. could these go bad or get dirty this soon ?
11-11-2011, 03:07 PM #4
11-11-2011, 03:17 PM #5
i got them from rock auto,made overseas,can't remember the brand. i'm going outside now to pull them, and see what they look like
11-11-2011, 05:15 PM #6
Those codes and your driving symptoms are classic for low fuel pressure. Get a gauge and test it.When you hear hoofbeats, look for horses not zebras.
11-12-2011, 11:35 AM #7
i've never done that before. is it a simple procedure to do ? if it is, i'll go down to autozone and see if they have a gauge that will work on my truck
By A5150 in forum GM PowertrainReplies: 1Last Post: 09-16-2010, 10:30 PM
By campuscop2003 in forum GM PowertrainReplies: 3Last Post: 08-06-2010, 10:08 PM
By Oscarvan in forum Chevy Suburban Forum (GMC Yukon XL)Replies: 7Last Post: 02-08-2010, 07:49 AM
By hkinsland in forum Chevy Silverado Forum (GMC Sierra)Replies: 7Last Post: 03-10-2009, 01:50 PM
By TrailFiend in forum GM PowertrainReplies: 2Last Post: 12-31-2007, 08:11 PM
Tags for this Thread