My husband just purchased a 2007 Ford Sport Trac 4WD. He says that after it sits awhile, he'll get in and, say, pull out of a parking lot. As he applies the brakes at that slow speed, they "air out" and press flat to the floor and the truck keeps moving. Pretty unnerving. He's taking it in in the morning, but I'm just wondering if anyone's heard of this? Air in the brake line? He's had it 2 weeks!
2007-09-05 13:00:58 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
If there's brake fluid in the master cylinder the brake lines aren't leaking. Have it towed immediately and dump it on the dealers step.
The power brake master cylinder or power brake booster must be faulty. Possibly there could have been a (PP) job of pressure bleeding the brakes when it rolled off the assembly line.
If you had been in an accident with your 2 wk. old Ford Sport Track you'd be calling the shots at Ford.
2007-09-05 13:36:10 · answer #1 · answered by Country Boy 7 · 0⤊ 0⤋
autos have 3 varieties of brake:- provider or foot Hand or emergency and Park brake. AS to the serious warning call There are 2 motives:- one million. the noise brakes while utilized and released make a pointy short sound which could alarm those at the back of if no longer conscious. 2. Truck brakes like those on all super autos artwork in 3 techniques, the Park brake is many times mechanical cable or spring canister. The emergency or hand brake is atmospheric, in that the brakes are utilized via spring rigidity which holds them on. Air is generated via the compressor on the engine which fees the air tanks and the air lines. because of the fact the rigidity rises above 2 bar it starts to compress the springs and lifts the brakes. the motor vehicle can then roll. provider brakes use springs to advance the brakes and so air is directed from the reservoir and utilized to the equipment to prepare braking rigidity many times in a techniques better than 4 to six Bar. purely the provider brake is hooked as much as the brake lighting fixtures which point out to those following that the provider / foot brakes have been activated. what happens in case you have a leak or failure. on the provider brakes loss of air ability that there in no braking from foot attempt so the motor vehicle heavily isn't waiting to be retarded. on the Emergency or hand brake ( many times referred to as the lifeless guy on a prepare) a leak reasons loss of air rigidity so the springs conquer the actuator and prepare the brakes immediately on the park brake spring canister failure will prepare the brake while cable failure on the park brake will propose no park brakes in any respect. ( different than the emergency brakes will nonetheless artwork). So with a semi trailer could there be entire air loss the emergency brakes might come on suddenly and unexpectedly without seen warning of it occurring to those following so which you will become very attentive to the component on the bumper stickers on the returned in case you weren't paying interest :-)
2016-10-10 00:56:58 · answer #2 · answered by ? 4 · 0⤊ 0⤋
I would say a bad master cylinder, if it only does after it sits, and is then fine once warmed up. Never heard of this as an issue on that vehicle, and didn't see any service bulletins on it. Hopefully the dealer will get it fixed right away, because he really shouldn't risk driving it....
2007-09-05 13:07:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
That's Ford tough quality for you.Air in brake system or possibly some sleepy UAW Ford employee didn't tighten up a brake bleeder screw or fitting.
2007-09-05 13:13:13 · answer #4 · answered by ? 5 · 0⤊ 1⤋
I cannot imagine that he would not call a tow truck and take it straight back to the dealer
2007-09-05 13:06:59 · answer #5 · answered by bungee 6 · 1⤊ 0⤋