12/29/2023 0 Comments Ford focus booster pumpThis prevents dirty and unmetered air from getting into the engine. I also included a hose clamp here just to be safe, but this piece likely doesn't need it since it'll fit on so tight.įinally, we'll need to plug the OTE pipe with a cap where our old vacuum line used to connect to. This is slightly larger than 12mm, so this will take some muscle to get on. Then, connect the other end to the brake booster vacuum hose that comes from the firewall. I added a hose clamp on this just for extra safety, but it may not be needed. I cut mine right around where the yellow arrow was below.Īfter that, insert the piece you just cut into your 12mm ID vacuum hose. We need to cut the end of the existing vacuum hose that connects into the intake manifold so that we can reuse this piece for our new hose. Here's what I ordered: : High Performance Silicone Vacuum Tubing Hose, ID 0.47" (12mm), OD 0.71" (18mm), 5 Feet per roll (1.5 Meter), Black 60 psi Maximum Pressure: Automotive This is a little bit of a tight fit, but it gives me peace of mine knowing it won't come off easily. Once that's removed, go ahead and get your new vacuum hose. Now you can remove the rest of the vacuum hose that routes to the intake manifold, OTE pipe, and brake booster. If anyone has questions on this though, I can definitely update this here! I won't go into detail on how to remove the vacuum pump and it's mounting bracket for two reasons: 1 it's been documented before and 2, it's fairly self explanatory if you look at it, the bolts you need to remove are the only ones connected to it. It is recommended to replace with a straight vacuum line like I will show you. It is not uncommon for these valves to fail. The reasoning? If the check valve goes bad, you will likely lose your brake assist power. Originally, I deleted the vacuum pump by modifying the stock hose that was included on the car so I could keep the check valve. The pump makes the engine bay look cluttered, and many people have built custom air intakes with the airbox sitting right where the pump does. The reasoning behind this varies from person to person, but overall it seems that the general consensus is to delete the pump for looks and space. Many people on this forum have deleted their vacuum pump entirely. ![]() Again, the Ford Focus RS sold in Europe with the same (mostly) T5 motor does not have a vacuum pump. Volvo, bring the safety minded branded that it is, has supplied us with such pump so that in the situation where the motor shuts off and you need braking assist power, you have it. So why do our cars have it when most others don't? The answer… likely safety. ![]() The brakes will still work in this situation, but you will be using the full power of your foot and leg to do so, as the car will not assist you. Cases when this typically happens is if you lose power (engine shuts off) while driving and then attempt to use the brakes. The purpose of this pump is to supply adequate vacuum to the brake booster (also known as brake assist) system in the event that the motor cannot generate enough vacuum to do so. The Mazdaspeed3 (different motor but many shared components) does not have a vacuum booster pump. The Ford Focus RS sold in Europe with the same T5 motor does not have a vacuum booster pump. Well, from my understanding, most vehicles do not come with a brake booster vacuum pump. I was confused a bit by this and was asking myself questions like "is that safe?" And "will this change the car in any way?". I've seen a couple of threads that reference people deleting their brake booster vacuum pump. ![]() I am not responsible for any damage to the car, any loss of braking, or anything that may be caused as a result of you taking the actions in this post. Warning/disclaimer: The information in this thread describes modifying your vehicles brake booster assist system.
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