RPM light 6250 to 7000 staying on?

[LavaSlide]

As the title says the last couple drives the RPM light 6250 to 7000 staying on?

What could cause this. I tried to search and I know it is supposed to go out when the engine is at 170 but has not gone off the last 2 commutes to Dallas. As far as the gauge and NGauge show that while I am cruising at 70mph my engine temp is between 190 to 200. My IAT2 is about 30 over ambient.

Oil level is good and no CEL.

 

[LavaSlide]

I think I found the issue.

I am going to replace both front O2 but with the Kooks LTH I have heard that that you can get some from a truck that are longer that I don’t need the extension that looks supplied.

Can someone help with part number and recommendations?
TY


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[biminiLX]

You can use an F150 6.2 Raptor O2 sensor which is longer. It’s the driver side GT500 sensor that is tight getting over the bellhousing. With LTHs it’s just a common maintenance item, replacing O2 sensors every few years.
-J

 

[LavaSlide]

I wanted to follow up on this issue. I never had a check engine light just the LC and the 6250 RPM light issue.

I discided to get the OEM O2 from Ford. I replaced both of them today. Car runs better than before and issues are gone.

 

[biminiLX]

Also to follow up, you still are using the stock O2s and Kooks extension harnesses? Or did you eliminate the extension harness and try the longer 6.2 oxygen sensors?
-J

 

[LavaSlide]

Also to follow up, you still are using the stock O2s and Kooks extension harnesses? Or did you eliminate the extension harness and try the longer 6.2 oxygen sensors?
-J

I just bought the OEM O2s from Ford. Left the extensions on it. They looked good and whoever installed them did a really nice job routing them.

Just blows my mind that it was an O2 code but no CEL just the over RPM light issue.