4 replies to this topic

[andyteethyea]

hey hey hey got a rough idle on 97 mpi and plugged in the diag tool and lambda sensor comes up if i unplug or remove and blank will it correct or do i have to get a new one also got a temp sensor error i fink was a green one on the right of the engine standing in front of the vehicle but that ones fairly cheep but the connector showed voltage but no resistance that good?

[Island Mini]

Your engine needs a lambda/o2 sensor in order to determine the amount of unburnt fuel in the exhaust gasses and correct fueling. If you just unplug it you will get a very rough and rich running as the engine essentially goes into limp home mode. Take it out check the wiring and connector and clean the tip of the sensor (will probably be caked) in carb cleaner and reinstall before replacing this as this is a common issue that they are just dirty.

Your temperature sensor I believe also affects engine fueling so if that is also giving an error replace that too, after checking the wiring and connector of course.

Dont wamt to spend money unnecessarily!

[andyteethyea]

Ill give it a good clean ect was hopeing there wpuld be a way to bypass it

[Gremlin]

Ill give it a good clean ect was hopeing there wpuld be a way to bypass it

Its there for a reason, otherwise how does it know how much oxygens coming out

[Fast Ivan]

Use the diagnostic reader to check the lambda voltage, it should be fluctuating quickly from low to high if working correctly