Brake pedal pulsating after new rotors and pad install plus ABS light comes on.
What is your question?
I changed out the rotors and brake pads on my 2007 Ford F150 a few months back. After install I went to do the break in on the brakes. The pedal started to pulsate and the ABS light came on. I have read that, that basically converts you to manual brakes. Here's my problem. I bought an Autel Maxicheck Pro and did the ABS bleed through it. Problem still persist. I checked for codes it had 2. C1297, C1297-F0. Right front wheel sensor input signal fault. I decided to switch the 2 sensors left with right and right with left. Still getting same fault codes. Confused on what else it could be. I have not driven the truck since the problem started. I would rather be safe than to drive it. Any help you can give would be deeply appreciated. I bought Power Stop drilled and slotted brakes as a replacement for stock.
What makes this problem better or worse?
Don't drive it to know
How long has your 2007 Ford F-150 had this problem?
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Hello, is this a 2WD or 4WD truck?
A diagnostic tool can help determine if you have a wheel signal issue as it can read the wheel speeds actively. This is an essential part of diagnostic testing for failure codes related to the ABS system.
Checking the wheel sensors, wiring harnesses and the tone ring, as well as the proximity of each sensor to it's corresponding ring is the first thing I would do.
Your pulsation -- if it is rhythmic from high speed braking, the rotors need machined (if possible).
Resolve your ABS concern first and recheck.
Codes were in my original post. C1297, C1297-F0 (Right front wheel sensor input signal fault). Swapped sensors from left to right. Still getting same code. I can pull out of my drive to the stop sign which is about 50 yards, apply the brakes, it pulsates, the ABS light blinks and stays on then it's like there's nothing wrong after that. It brakes fine just no ABS. Oh it's a 2WD.
If sensor swap didn't fix it, the ring on the right may not be reading. Check using the ability to monitor wheel sensor operation using a high end diagnostic tool.
Or, you could have a wiring concern.
This isn't cryptic mysterious stuff. Honestly, testing and referencing proper shop manual materials will yield an answer.
In other words - why replacement brake rotors?
Truck is rear wheel drive I assume - front brake rotors with integral ABS tone ring.
Closely inspect wheel speed sensor magnet for ANY signs of damage - contact with tone ring.
Difficult to determine here online if brake pedal pulsation is from ABS activation or excess rotor runout.
Good luck!
Old rotors had deep grooves from ware and were warped. I bought the truck new in 2007. This is only one of two things that have been done to the truck. Yes I've had it 12 years lol. I've inspected rotors, pads, tone rings and like I said swapped the sensors to opposite sides. Sensors have no damage. Truck only has 67,000 miles. If I created the problem and know that I did it would be fixed. My father has the same year model but different body style an had to have his replaced due to the rotors doing the same thing. He took his in to have them fixed. I preferred not too. The truck brakes fine without the abs I just prefer not to drive it because of that. There has been no ware put on the new rotors are pads because I parked it soon after the pulsating and ABS came on. It was immediate after the break in so the trucks been driven for like 30 minutes the past 4 to 5 months. I'm going to go ahead and replace all the ABS Sensors and go from there. Sensors show no damage, but, are 12 years old. Won't hurt to change them out. Thank you for your help.
Codes were in my original post. C1297, C1297-F0 (Right front wheel sensor input signal fault). Swapped sensors from left to right. Still getting same code. I can pull out of my drive to the stop sign which is about 50 yards, apply the brakes, it pulsates, the ABS light blinks and stays on then it's like there's nothing wrong after that. It brakes fine just no ABS. Oh it's a 2WD.
If sensor swap didn't fix it, the ring on the right may not be reading. Check using the ability to monitor wheel sensor operation using a high end diagnostic tool. Or, you could have a wiring concern. This isn't cryptic mysterious stuff. Honestly, testing and referencing proper shop manual materials will yield an answer.
Problem found. It is the right sensor ring. Thanks for all your help.
Awesome. Makes sense. Best of luck!