jeepcherokee95
NAXJA Forum User
- Location
- Missouri
As some of you may know from my posts I have a 95 xj and I have been running down a mileage problem for about a month. My 4.0 is running rich - mechanic says the injector pulse is too long. I have changed the CCV system and temp sensor but no change has been evident.
When he checked the 02 sensor it shows good but I am curious about the open and closed loop thing. My engine runs at around the 190 mark usually - however, I am in the middle of a fan swap and have driven it on short jaunts with just the stock electric fan hooked up and temps get into the 210-220 mark but I still hear the engine ping like it did when I had the stock fan in.
Will an 02 sensor show good and still not work correctly? and there seems to be some debate about my year - is there one or two sensors on a 95 jeep XJ country.
Thanks,
JC95
When he checked the 02 sensor it shows good but I am curious about the open and closed loop thing. My engine runs at around the 190 mark usually - however, I am in the middle of a fan swap and have driven it on short jaunts with just the stock electric fan hooked up and temps get into the 210-220 mark but I still hear the engine ping like it did when I had the stock fan in.
Will an 02 sensor show good and still not work correctly? and there seems to be some debate about my year - is there one or two sensors on a 95 jeep XJ country.
Thanks,
JC95