mudhound32
NAXJA Forum User
- Location
- Long Island NY
I just got back from my emissions test and have some hi readings which caused a failure. The mechanic suggested I change the O2 sensor. Here are the numbers the jeep posted:
HC 4.27 gpm
CO 91.21 gpm
NOx 2.07 gpm
Here are the acceptable numbers:
HC 1.60 gpm
CO 40.00gpm
NOx 2.50 gpm
Before I had it tested I changed the plugs, wires, rotor, cap, air filter and added techron to my last fillup.
In addition to the O2 sensor, (which was never changed and has 210,000 miles) I was also thinking of changing the following since the Jeep when warm seems like it misses a little and sputters. I also have an intermittent startup issue and if I unplug and replug the tps it will start up.
-tps
-cps
-fuel filter
-oil change
Does this sound like it will bring down the numbers above? I have an 89 XJ auto, 4.0L stock
HC 4.27 gpm
CO 91.21 gpm
NOx 2.07 gpm
Here are the acceptable numbers:
HC 1.60 gpm
CO 40.00gpm
NOx 2.50 gpm
Before I had it tested I changed the plugs, wires, rotor, cap, air filter and added techron to my last fillup.
In addition to the O2 sensor, (which was never changed and has 210,000 miles) I was also thinking of changing the following since the Jeep when warm seems like it misses a little and sputters. I also have an intermittent startup issue and if I unplug and replug the tps it will start up.
-tps
-cps
-fuel filter
-oil change
Does this sound like it will bring down the numbers above? I have an 89 XJ auto, 4.0L stock