2003 Yukon 5.3L coding issues
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Joined: Nov 2020
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2003 Yukon 5.3L coding issues
I've had a coding issue for a few years. went away once a while back had done none and now it's back.
Codes P074 and 071 both banks lean. The truck runs good, gas mileage ( not from on board) going 75-80 mph 15.7mpg.
I plugged in my scanner and this is what I have.
MIL status Off ? temp was up to 195
TPS 5.9% no movement
RPMs 530-560
MAF .83
MAP 11.2
Timing 17.5
Bank 1 LT trim 9.4
Bank 1 ST trim 0 - +1.6
Bank 2 LT trim 25 pegged no movement
Bank 2 ST Trim 23 - 27
I've done all the leak tests smoke - air pressure - propane didn't find any.
Can you tell me what the values should be for this 5.3L NA at idle?
Codes P074 and 071 both banks lean. The truck runs good, gas mileage ( not from on board) going 75-80 mph 15.7mpg.
I plugged in my scanner and this is what I have.
MIL status Off ? temp was up to 195
TPS 5.9% no movement
RPMs 530-560
MAF .83
MAP 11.2
Timing 17.5
Bank 1 LT trim 9.4
Bank 1 ST trim 0 - +1.6
Bank 2 LT trim 25 pegged no movement
Bank 2 ST Trim 23 - 27
I've done all the leak tests smoke - air pressure - propane didn't find any.
Can you tell me what the values should be for this 5.3L NA at idle?
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Ianmac
1988 - 1998 (GMT400)
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Mar 22, 2020 11:34 AM