Vostok
07-07-2011, 04:39 PM
I've had a couple symptoms.
1. When I start the car in the morning before work or anytime it sits for 4+ hours it bogs until it has idled for a little while and/or I give it gas and it smooths out for the entire duration of the drive and runs completely normal lacking no power at all when under load.
2. In the 35-45 MPH range under no load (before OD kicks in) there is a very slight bucking (not something most people would notice) and the level/intensity of the bucking increases if the A/C is on.
3. MPG sucks ass. Been getting like 14-16 MPG on tanks of gas that are mostly highway.
I've been trying to isolate it for a while now but could not figure it out due to no light and many possibilities.
Threw 4 codes all at one time yesterday after not having a check engine light for many months.
P0171 - System Too Lean, Bank No. 1
P0174 - System Too Lean, Bank No. 2
P0102 - MAF Circuit Low Input
P0113 - IAT Circuit High Input
I'm like 80% sure it is not the following issues due to testing
- Vacuum leak
- Fuel pressure
- Dirty MAF
- Dirty IAC
- 100% sure its not the plugs
Do our MAFS just plain go bad after a while beyond cleaning?
Don't really know much about the IAT, that one troubles me as I know its somewhat of an uncommon code to see which could be a good thing or a bad thing...
Help :alone:
1. When I start the car in the morning before work or anytime it sits for 4+ hours it bogs until it has idled for a little while and/or I give it gas and it smooths out for the entire duration of the drive and runs completely normal lacking no power at all when under load.
2. In the 35-45 MPH range under no load (before OD kicks in) there is a very slight bucking (not something most people would notice) and the level/intensity of the bucking increases if the A/C is on.
3. MPG sucks ass. Been getting like 14-16 MPG on tanks of gas that are mostly highway.
I've been trying to isolate it for a while now but could not figure it out due to no light and many possibilities.
Threw 4 codes all at one time yesterday after not having a check engine light for many months.
P0171 - System Too Lean, Bank No. 1
P0174 - System Too Lean, Bank No. 2
P0102 - MAF Circuit Low Input
P0113 - IAT Circuit High Input
I'm like 80% sure it is not the following issues due to testing
- Vacuum leak
- Fuel pressure
- Dirty MAF
- Dirty IAC
- 100% sure its not the plugs
Do our MAFS just plain go bad after a while beyond cleaning?
Don't really know much about the IAT, that one troubles me as I know its somewhat of an uncommon code to see which could be a good thing or a bad thing...
Help :alone: