toms93lx

ok here you go ......

start the car and O2's will run at about .01 for 2 minutes then jump to .8 and fluctuate up and down the scale like it should......

here is the weird part.....i ran the KOER started the test within one minute of starting engine while O2's are reading .01 and i got codes 41 and 91(lean)

next ......i waited 2 minutes till the O2's started to read .8(fluctuating)to .1 up and down the spectrum like it should........i got code 45......no 41 and 91

WTF ........makes no sense or does it to you guys

94ford5liter

how old are your 02 sensors? Could just be warn out. Do you know what kind of shape your cats and fuel injectors are in? How many miles are on your car?

toms93lx

the O2 sensor are new

original cats and fuel injectors

i have about 70,000 miles on it i think.....i dont think its 170,000 car is in to good of shap and nothing has been changed i mean nothing same parts from when the old lady bought it

the cats dont rattle and i had the fuel preasure tested ..ok
ran the ballance test on the car and it passed

94ford5liter

If you treat them right, they can still be running pretty smoothly with 170k. A lot of people with fox bodies pull that crap on people when they sell them. My brother bought one that supposedly had 60k, turns out it had 160k. However, it still ran pretty strong at 200k when he sold it. A couple of your injectors could be warn out. If you pull them off the car, anywhere that cleans them can do a check on them for not much. I had 2 faulty 24lb injectors on my car around 120k.