bigdjatom416
TYF Newbie
Hey gang!!
Hoping you all can help. I have a 2009 Tahoe LTZ 5.3L and its having a cold start issue. In the morning when I first start the engine its really rough and sometimes takes a few tries to start. After a few minutes it warms up and seems to run perfectly. Its been throwing P0172 and P0175 System To Rich Banks 1 and 2 codes.
I have installed new air filter, Mass Air Flow Sensor and Vapour Canister Purge Valve. I also cleaned out the throttle body. Anyone have any idea what to look at next?? I'll post the freeze frame data from the scanner in case it helps.
Freeze Frame Data:
DTCFRZF P0175
FUELSYS1 CL
FUELSYS2 CL
LOAD_PCT(%) 17.6
ETC(F) 192
SHRTFT1(%) 5.5
LONGFT1(%) -30.5
SHRTFT2(%) 4.7
LONGFT2(%) -30.5
FRP(psi) 43.5
MAP(inHg) 13.2
RPM(/min) 962
VSS(mph) 16
SPARKADV 12
IAT(F) 86
MAF(lb/min) 0.985
TP(%) 17.6
RUNTM(sec) 157
EVAP_PCI(%) 0.0
FLI(%) 24.7
WARM_UPS 1
CLR_DST(mile) 4
EVAP_VP(Pa) 16369
BARO(inHg) 29.4
CATEMP11(f) 1124.60
CATEMP21(f) 1124.60
VPWR(v) 14.168
LOAD_ABS(%) 28
EQ_RAT 0.999
TP_R(%) 3.5
AAT(f) 73
TP_B(%). 18.0
AAP_D(%) 20.8
APP_E(%) 10.2
TAC_PCT(%) 5.1
Hoping you all can help. I have a 2009 Tahoe LTZ 5.3L and its having a cold start issue. In the morning when I first start the engine its really rough and sometimes takes a few tries to start. After a few minutes it warms up and seems to run perfectly. Its been throwing P0172 and P0175 System To Rich Banks 1 and 2 codes.
I have installed new air filter, Mass Air Flow Sensor and Vapour Canister Purge Valve. I also cleaned out the throttle body. Anyone have any idea what to look at next?? I'll post the freeze frame data from the scanner in case it helps.
Freeze Frame Data:
DTCFRZF P0175
FUELSYS1 CL
FUELSYS2 CL
LOAD_PCT(%) 17.6
ETC(F) 192
SHRTFT1(%) 5.5
LONGFT1(%) -30.5
SHRTFT2(%) 4.7
LONGFT2(%) -30.5
FRP(psi) 43.5
MAP(inHg) 13.2
RPM(/min) 962
VSS(mph) 16
SPARKADV 12
IAT(F) 86
MAF(lb/min) 0.985
TP(%) 17.6
RUNTM(sec) 157
EVAP_PCI(%) 0.0
FLI(%) 24.7
WARM_UPS 1
CLR_DST(mile) 4
EVAP_VP(Pa) 16369
BARO(inHg) 29.4
CATEMP11(f) 1124.60
CATEMP21(f) 1124.60
VPWR(v) 14.168
LOAD_ABS(%) 28
EQ_RAT 0.999
TP_R(%) 3.5
AAT(f) 73
TP_B(%). 18.0
AAP_D(%) 20.8
APP_E(%) 10.2
TAC_PCT(%) 5.1