So, I kinda hit a speed bump at 40 mph and now my ABS light is on. What should I look at for what may have happened?

 

Hi take a look at your abs speed sensor in the rear axle on top of the pumpkin ball if you have a voltmeter test it first but that's probably what it is what year is your f150?

 

What should I see? No resistance, lots of resistance?
Its a 2004.

 

You could always pay the dealer to hook up the computer and read out the ABS code.

2004's are 4 wheel ABS, so there are also sensors on each front wheel.

 

If I'm not mistaken iyou set it on two ohms and it should read 512 if it's good although I think taking it to a shop would be your best bet good luck in getting it fixed I'm going through the same issue with my 95 f150 4x4

 

Hi would the abs light coming on cause bad fuel milage?

 

Not by itself unless the brakes are dragging. If that were the case, your hubs/wheels would be hot.

 

Hi yeah i dont think they dragging, just my milage has been crap lately but probally just the winter fuel. Cause truck has good power ect and light comes on after a bit of driving