My 98 was running rough(not the idle but under load or when I really stepped on it) felt like it was missing. Then I got a check engine light. I pulled the code and got:
P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1.
Bank one is the passenger side so when it stops raining I guess I’ll check the plugs on that side, I still have the original plastic intake, so I’m wondering if it could have cracked and caused a vacumm leak? But if so why do I only get the code for one side? Can I get some advice on what to try?
The car has 70K so I guess it could actually be the sensor so this weekend I’ll try switching them from side to side, is this one of those tough jobs? If it’s a pain(hidden, always stuck, knuckle busting) I want to know so I’ll just replace both sides while I’m doing it anyway, but if it’s easy I’d rather not buy parts I don’t need.
Thanks,
Don
P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1.
Bank one is the passenger side so when it stops raining I guess I’ll check the plugs on that side, I still have the original plastic intake, so I’m wondering if it could have cracked and caused a vacumm leak? But if so why do I only get the code for one side? Can I get some advice on what to try?
The car has 70K so I guess it could actually be the sensor so this weekend I’ll try switching them from side to side, is this one of those tough jobs? If it’s a pain(hidden, always stuck, knuckle busting) I want to know so I’ll just replace both sides while I’m doing it anyway, but if it’s easy I’d rather not buy parts I don’t need.
Thanks,
Don