Hey guys, my check engine light appears a couple of days. Then shuts off for weeks at a time, then eventually will come back on.


I borrowed a code reader and it read the following
P0133
O2 Circuit Slow Response
Bank 1 Sensor 1

1999 4.6 v8 2WD

 

whats the mileage? its the front sensor on the passenger side. check the sensor connections. and inspect the harness. may just be a connection issue. if all looks good then it may be the sensor. have they ever been replaced? does weather seem to affect it any? driving conditions affect it?

 

If you have over 100k, there's a good chance that the sensor needs to be replaced. It would be best to replace both front sensors if you do it. Use only a Bosch or Motorcraft sensor.

 

Thanks guys, I am at 370,00 K.
Weather , and driving conditions dont seem to matter, it just pops up now and again on its own.
I had one replaced at the dealership a couple of years ago, but i cant remember which one.

Where are these sensors located? will it be in my hanes manual? Approx, how much is a sensor.

Thanks

 

on rockauto.com they are 52 bucks each for motorcraft sensors. and they are right by your catalytic convertors on your exhaust system. your haynes manual should show them.

 

We should publish our own manuals u know it.

Something Like ~ The F150 online community manual

I know we have enough pics/ illustrations.




5 & 6 ^^^^


Between us all , we may make millions

BTW - My friend in Alaska dundid a write up on changing the forward o2's -

https://www.f150online.com/forums/ar...r-install.html

 

there is definately enough pics and info. all we would need is someone who can type a book and make it sound half way intelligent

 

Yea, we would half to hit up one of the moderators.. Butuh, they would probably want a piece of the action.

 

Nice pic guys " changing o2 sensors for dummies" Like me. Now, to get at these sensors, does anything have to be removed? or is there somewhat easy access?

Also, my check engine light has not been on for awhile, today we had lots of rain, the light came back on. Not sure if water would set it off!

 

Go get the codes checked and see what it is this time.

 

wutagoalie,

FYI the O2 sensor uses a 22mm nut. Expect it to be stuck on if you have 370K on the vehicle. Do you know how to double wrench? Put that in the manual.....

.

 

checked it out today, same codes came up

 

I gave you the link. Shoot man, read it, it has eveything you need to do - Is helping you worthless or what?

Alaska covers it all.

 

I would replace both front O2's, use only Bosch or Motorcraft.

 

Clean the MAF, disconnect the battery for a minute and start it up and check to see if the light comes back on.

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