Basically my engine died after I made it home. (My 98 F150 had been flashing code 133 for a couple of days).
Here is how it started, I went to 60 mph for about half a mile then after a left turn i went down to 35mph at this point my "check engine" began to flash. I took the turn into my driveway and place the truck to Park and that's when my truck started to act out: first it felt as if it was loosing power, then there was white smoke coming out of my tailpipes, shortly after that my engine died...
I got the codes:
133 - O2 Sensor CKT Slow response (Bank1 Sensor1)
420 - Catalyst Efficiency below threshold Bank 1
301 Cylinder 1 Misfire Detected.
I have already replaced the O2 sensor but that did not fixed it. Now I am wondering if my cat is basically clogged? I have heard that at times this can be unclogged if you add lacquer thinner when your tank is half full/empty and run the vehicle. Just wondering
after I replaced the O2 sensor the engine felt as if was going to start but it only struggles for a second and then it shuts off.
Thanks for your help
98F150 4.2 195,000miles
About two months ago I had a short on the A/C wiring and the place of the short was right at the O2 sensor, which I suspect is what got my O2 sensor messed up.