George's 2003 Sub "lucky7"

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
More testin has indicated that bank one and two front O2 sensors are reading like they should and with the cats lit the rear sensors are aslo reading as they should. As the front ones follow the fuel trim the rears stay nice and steady. So the cats seem to be liting and working the same since the numbers match for both sides. I guess they are just not quite efficient enough. I changed the stat so now I reach 186 deg at idle and I plan to try some Cataclean on a 1/4 tank to improve the cat function. Will see....
 

1low4x4

Full Access Member
Joined
Feb 14, 2011
Posts
2,409
Reaction score
716
Location
Texas
First Name
Nick
Truck Year
1984
Truck Model
K10
Engine Size
5.7
Was talking to a cousin today about all this, he spent years in Maryland, with emissions...he was saying drive the thing like 2 hours before you have it tested and don't sit too long beforehand...also can run ever clear (100% alcohol) in the tank and it will clean the sucker out too
 

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
Thanks for the tips. I have done the alcohol trick too on other vehicles. Befoe they changed to doing the OBD test anything newer than 1967 required inspection and alcohol was the go to trick to pass.
Right now I am struggling to get this truck to pass it's self tests so it's considered ready for inspection. I need it to switch one more moitor to ready before I can even be considered ready or I get rejected.
I figure the cats are working but must be marginal at storing O2 during the self test for efficiency when the computer does the rich/lean catalyst test. It takes up to five drive cycles to get it to run the test and my normal commute to work doesn't include the speeds or distances required to get it to do it so I have been leaving early and taking the long way to work. Like 30 miles longer. I must say I know more about how the system works than I ever cared to know!
 

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
The saga continues. I have had 5 P0101 MAF sensor circuit voltage low DTCs pending in the last 8 days so I will be replacing that this evening. And I have had 3 hard P0420 bank one catalyst efficiency low DTCs set.
I ran down to 1/4 tank last night, added two bottles of Cataclean and ran it until the low fuel light came on then went and added 20 gallons of fuel. I want to stay below 3/4 and above 1/4 tank so I have a chance at setting the EVAP monitor to ready.
I will see what happens once the MAF is changed and if it will set the catalyst monitor now that I ran the cleaner through it.

Tired of this already!
 

flyboy1100

Full Access Member
Joined
May 23, 2014
Posts
1,024
Reaction score
9
Location
UsA
First Name
me
Truck Year
1986
Truck Model
k1500
Engine Size
305, 700r4??, 3.42 gears
what year is yours? how many miles?
 

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
Anyone ever use these plugs? Can get a set of eight with wires for $35.00 but I am not sure about them. I have always been a die hard AC Delco plug guy for my GM rides. Plus Knowing the spark will only jump one gap at a time I feel the four grounds is more of a gimic than a benefit.
 

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
Yup! I am fried for the day. Heres what I mean.
 

Attachments

  • image.jpg
    image.jpg
    21.8 KB · Views: 132

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
And these wires. I can get the plugs and wires for $35.0"
 

Attachments

  • image.jpg
    image.jpg
    23 KB · Views: 127

mistaake

Full Access Member
Joined
Mar 20, 2015
Posts
651
Reaction score
18
Location
SF Bay Area, California
First Name
Michael
Truck Year
1999
Truck Model
Crown Vic
Engine Size
4.6
gotta use acdelco plugs anything else might have problems
 

Georgeb

Full Access Member
Joined
Apr 30, 2015
Posts
3,259
Reaction score
214
Location
Wisconsin
First Name
George
Truck Year
2003
Truck Model
K10 Burb Z71
Engine Size
5.3
my friend tried to run e3 plugs in his 02 gmc envoy 4.2l straight 6

FAIL

my rule of thumb has always been
AC Delco = GM
Autolite = Ford
Champion = Mopar
 

flyboy1100

Full Access Member
Joined
May 23, 2014
Posts
1,024
Reaction score
9
Location
UsA
First Name
me
Truck Year
1986
Truck Model
k1500
Engine Size
305, 700r4??, 3.42 gears
Mine has been
NGK = everything



Sent from my Nexus 6 using Tapatalk
 

Forum statistics

Threads
44,173
Posts
950,848
Members
36,288
Latest member
brentjo
Top