I've had an air hose problem before (similar engine problem come to think of it, but not a brake problem). Would this be the hose that's right up against the middle of the firewall, or would you know that much about an '02 focus?
I'm just trying to get as much info as possible, since we're about 3 hours away from our regular mechanic, and I don't have the resources to get under the hood and check everything out right now.
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Re: More on engine shaking/brake problem
Dont know a whole lot about the focus.But I think there is a junction block on firewall where your talking about where a bunch of hoses hook up? Look at this and see if you see a hose off Thye power brakes run off of vacuum so if you are losing vacuum this can effect brakes.Look at brake master cylinder,it hooks to a round looking thing this is your brake booster you should see a vacuum hose on it follow it and make sure it is all connected
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Take to your favorite autoparts store, ask them to read any error codes. I would guess you have some rubber hoses that are leaking air into the system. I'd replace all the small hoses to make sure I didn't have a similar problem later on. A more extreem problem will be leaks in gaskets in the air intake system. Possibly the intake manifold, or Throttle body connection to the Intake manifold. Spray water all around these connections. slowly, noteing any change in engine speed or behavior. if there is any change, more than likely you will need to change the gasket. or have a reliable mechanic replace, but have him double check this is the problem.
I would start with a complete tune-up then if its running rich(black smoke) need to fix the problem like new air filter(s) and such do a compression test of each cylinder (one at a time) and see if readings all come close..may have burnt valves or blown head gasket also look at vacuum systems and see if any hoses are off missing or broken repost on this please thanks...
it may be engine related,such as tune up.do you have a check engine light on? vibration from a stop at red light indcates you have a miss in the engine, does it sputter going down the road?please be more specific with make,model,engine size. it does matter. sometimes a simple tune up repairs issues like you've described. if no check engine light on,you may only need plug wires and plugs or may be a broken vacum line to the engine. look for small vacum hoses that are broken or disconnected around the air induction system. or OLD SCHOOL. where the carb, used to be. thank you for choosing fixya.com
hi this could be a few things, i would check your idle as a very low idle will cause engine shaking when the engine is near stalling, idle should be around 700rpm approx when warm. If that checks out all good check the leads and that one is not getting worn and causing a misfire or a vaccum hose is not off, both will cause similar problem. The last thing i can think of is a broken engine mount causing problem as when motor idles or runs at a certain rpm it will shake harder and may be the cause aswell
Hopefully this may be of use to you. I've just had similar symptoms with a 2003 MPV. It shook when it warmed up and with brakes applied. It also turned the check engine light on with codes P0171, P0174 and P0300 which were bank 1
No, it is not anything to do with the gas. Most likely cause is a vaccum leak look at your brake booster. open the hood look at the fire wall right in front of where you sit. The brake booster will have a hose comming out of it going to the engine this hose is loose or has a hole in it. when you step on the brake it **** air causing the engine to trun off sometimes.
i just fixed a similar problem on my van there is a rubber elbow on the end of the pvc hose that connects to the valve cover you can only buy the elbow with the hose and it costs about 100 bucks but i guess they have had to replace a lot of these because the new one looks twice has strong you just have to check and see if its collapsed in on itself preventing air movement or leaking the shop will charge you 175 dollars to fix it plus the part but it only takes 20 minutes good luck
Bleed right rear,left rear, right front, left front in that order to be sure of good bleed but the brake booster makes it easy to push pedal. Make sure of no leaks from master cylinder. Otherwise brake hoses being soft will also hurt baking quickly.