Fuel Sys 1 status CL-Fault 1999 Expedition

[MikeA]

Anyone with a service manual, can you tell me what all can trigger this fault?

I know a OL is for cold starts, a CL is when the O2S/HO2S is at a certain temp, the pcm starts to control and manage fuel/air, that is the short version of what they are.

I got the CL-Fault , showing up on live data on cold start, when it should be in OL.

I am thinking the O2S is the problem, but what else would trigger this fault?
What are the numbers to check the O2s?

I do not have a service manual to look it up.

 

[Bedrck47]

http://www.google.com/url?sa=t&rct=...codes/&usg=AFQjCNGgu14lkZiN5_3eoxhrdCvSPlhj4w

 

[MikeA]

That site states,
For our Pulling Codes case study this month, our subject vehicle is a 1999 Ford Expedition, and we will address the following codes in reference to open loop fault: P0171, P01741, P1131 and P1151 for Ford products.

I do not have a open loop fault and there is no codes popping up, which is why I am asking if anyone with a service manual, can tell me what, if anything , that can trigger a closed loop fault condition, specially at cold start.

I am leaning towards the O2S, but would like to know what the service manual says.

 

[MikeA]

Just ran another live data, longer time running, looks like it may be caused by O2S,
bank 1 sensor 1 , shows 0.000
bank 1 sensor 2 , shows 0.500 - 0.750
bank 2 sensor 1 , shows 0.500 - 0.750
bank 2 sensor 2 , shows 0.5000 - 0.750

b1s1, looks dead, will change O2S .

Still would like to know what the service manual says can cause the CL-Fault, just for the knowledge of knowing.

 

[MikeA]

I was hoping the service manuals would have something on this.

Thanks anyways.

 

[Bedrck47]

http://www.expeditionforum.com/threads/factory-service-manuals.25089/

 

[MikeA]

Thanks, but I don't need a service manual, atleast not right now.

Am I to assume correctly the service manual has no info on what causes a CL-Fault, since you didn't, mention anything about it?

Was hoping there would have been something on the issue.

 

[Bedrck47]

Well if you had one you would be able to look things up

 

[MikeA]

So you won't tell me , just to make a sale?.

 

[Bedrck47]

You can get one on e-bay

And sorry I'm just to lazy to look it up today Its a Holiday