Ok guys I got a new one. Last week car over heated. Trouble shot and determined fan resistor was bad. Ordered Ford Racing fan upgrade and new plug. While waiting on that I decided to replace my HVAC actuators. To do that I almost completely disassembled the interior. With that completed. Everything put back together fan replaced I start the car. Now I have a low fuel message. 0 miles to empty. Gage shows 3/4 which is about where it should be because I filled it up before my last trip home. I tried reading codes but nothing. Any ideas? Is there a reset procedure to make it relearn?

 

The Fuel System is Pretty Quirky. It Has To Go Through Various Modes Before Either Resetting or Showing Codes. If Gauge is Reading Correctly I Would Wait Till After Next Fill Up Before I Was Concerned. Be Sure To Never fill Up With Key on Btw.

Here is a Little Sample of The System Diag.

https://themustangsource.com/forums/...2/#post7090583

Here is a Cluster Reset Link Which You Might Check Out!

https://themustangsource.com/forums/...3/#post7082946

The Instrument Cluster Pdf is on This Link. Mentions Low Fuel Indicator & Prove Out Also Fuel Gauge Operation

https://themustangsource.com/forums/...2/#post7088869

KC

 

That is kinda what I was thinking. But since I had disconnected the gage cluster wasn’t sure. Didn’t expect that. A/C and fan work right now. Lol.

 

After a few drive cycles this issue corrected itself. Must have been due to battery being disconnected for a week.