Brando_SLT
Senior Member
- Joined
- Nov 8, 2018
- Posts
- 237
- Reaction score
- 105
- Location
- Orange County, CA
- Ram Year
- 2005
- Engine
- Hemi 5.7
So following my head replacement, the truck has been running great. Even for a 200k+mile engine I'm getting about 18.9mpg on the freeway, runs good, idles good, feels like the engine has new life.
But, now throwing codes. P0172 and P0175 - System too rich bank 1 and 2 respectively. Plus a small EVAP leak (at my gas tank). I am speculating that it may be old O2 sensors and worn CATs. Here's why: As part of my last project...
I replaced all 8 injectors.
I replaced the MAP sensor.
I installed a 180° thermostat (it had a 160° previously)
I replaced a faulty Engine Coolant Temperature sensor.
I replaced all seals on the top end (required as part of the last job).
Rich condition is typically when there is not enough air to the mixture, so it should not be related to an intake leak.
What do y'all think? Would be nice to get your guys' thoughts here. I saved my old MAP sensor and fuel injectors, but they're all gummed up with oil and carbon.
But, now throwing codes. P0172 and P0175 - System too rich bank 1 and 2 respectively. Plus a small EVAP leak (at my gas tank). I am speculating that it may be old O2 sensors and worn CATs. Here's why: As part of my last project...
I replaced all 8 injectors.
I replaced the MAP sensor.
I installed a 180° thermostat (it had a 160° previously)
I replaced a faulty Engine Coolant Temperature sensor.
I replaced all seals on the top end (required as part of the last job).
Rich condition is typically when there is not enough air to the mixture, so it should not be related to an intake leak.
What do y'all think? Would be nice to get your guys' thoughts here. I saved my old MAP sensor and fuel injectors, but they're all gummed up with oil and carbon.