Question about 2007 Toyota Tacoma
Replaced brake booster with new part. brakes pull a vacuum and won't release after the first time the brakes are applied or after the engine has idled
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Posted on Jan 02, 2017
It would be extraordinary for a technician to recommend a booster and a master cylinder with no previous mention from you of a possible problem in this area. In other words, the technician had no business looking at the m/cyl or the booster, unless you told him that your braking was deficient.
Here is what REALLY happened: Somewhere, I'd bet, your brake light came on, and somebody "topped off" the master cylinder, to shut the light off. Now, please understand that the brake fluid level in the master cylinder reservoir DROPS PROPORTIONALLY to the wear of the brake pads. When the tech replaced the front brake pads, he obviously had to squeeze the caliper pistons into the housings to allow the insertion of the new pads. This action forced the brake fluid from the now-compressed caliper pistons BACK into the master cylinder, and it sprayed out from under the cap, coating the cylinder and the booster. Tell that repair service that you do NOT need a booster and a master cylinder, THEY caused the problem with the fluid being everywhere. I am confident that I just saved you a significent amount of money that you do NOT need to spend. Have a great day.
Posted on Dec 29, 2008
Your dealer is not lying to you.
All of the Toyota product line with ABS has this phenomenon. What Toyota has done is incorporate "Brake Force Distribution" into the braking system. What that means is there is now a sensor on the brake pedal/brake rod, going to the master cylinder. The sensor measures how FAST you press on the brake pedal. This activates the ABS pump, and supplies more brake fluid, harder, to reduce the time needed, such as a "panic stop"; the pedal travel is much longer than you are used to, because of the way they have to measure the speed of the rod being depressed. In actuality, this system is much better than the old system, as it also prevents wheel drag. It just takes a while to get used to. Really, there is nothing to worry about, I explain this same thing to my customers every week.
I hope this helps you out.
Thanks for choosing FixYa for assistance.
Posted on Mar 05, 2009
HI, i would advise to check the following areas for faults. replace any part that is fouled or malfunctioning.
1. Check the air filter- This device may be clogged or dirty. replace if visibly fouled.
2. Check the fuel pressure regulator- pull the vacuum hose of the regulator. if there is gas in it, replace the fuel pressure regulator.(if there is no fuel present in the lines, move on to the next check point)
3. Replace the fuel filter and, check the voltage at th fuel pump. you should get 12V at the pump. if its lower than twelve, chekc the ground for corrosion as well as the entire wiring harness as well. all the way to the relay for fualts.
4. Check the Intake Manifold Gasket for worn or damged edges. this ware and tare will cuase leakge. replace this gasket if found to be fouled in any way.
5. Check the freash air intake hose. this hose may be clogged or damaged.
6. Last but not least, check the injectors for leaking seals and, correct pulse as well. replace any injector with a weak pulse or , leaky seal.
Posted on Jul 19, 2009
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