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525i

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Extreme power loss, engine rattling.
Using 15w-40 instead of 5w-30 could be the cause of your problem. Your engine has very small passages that lead to the valve train. One components in particular, hydraulic lifters, require a good flow of oil through a small passage...
Question
I'm car shopping
Hey there, that is pretty low mileage for a 10 year old car. To be safe, I would suggest scheduling a pre-purchase inspection on the car before making a final purchase. This way, you can have a local expert give...
Question
Car been sitting in garage for over a year. Bad starter.
Hello. There are quite a few things that you should do. The extent to which you do them will depend on need as you prioritize it with the budget you have. After replacing the starter, you will also want to...
Question
Does a transmission module needs to be reset after replacing the transmission?
Hello there, in some cases the transmission control module will need to be reflashed or programmed to the new transmission or it will need to be updated with the newest software. Usually, only dealers have the ability to program the...
Question
In mornings before work (cold usually), my car acts like it wants to stall in idle/park. Give it gas 1-2 minutes. No more issues
Hello and thank you for contacting YourMechanic. What seems to be happening is the EGR valve is sticking open and when it gets hot, the valve shuts. This will cause an engine to stumble when first turned on. Anther thing...
Question
Steering does not respond properly, do i need to replace the gear box?
As you know, the sway bar connects suspension components on opposite sides of the vehicle. The stabilizer bar should be checked for stiffness. This causes side-to-side motion in the car which affects steering and handling of the vehicle. Failure to...
Question
My car is sometimes hard to start
With a car this old the first thing I would look at is the service history. By 180 thousand miles, the car should have had a couple of major services and if one is long overdue, that could easily be...
Question
working on a 1991 bmw 525i. belt shredded and got everything replaced and back togther. I did notice the water pump will not spin
BMW has been using plastic water pump impellers for a very long time. It has lead to a whole new range of water pump issues. Sometimes the impeller disintegrates into a pile of plastic shreds, locking the pump up. Other...
Question
My car lost power whilst driving it its a 525d manual called the AA but they couldnt fix it just towed me home 2005 BMW 525d
Hello - first task is to look at the problem codes, whether the Check Engine light is illuminated or not. This will provide guidance for the diagnostic process. An easy check is to check the fuses and relays for the...
Question
engine operating at reduced output
Hi Pat...you should request a check engine light diagnostic during which a certified mechanic will download and interpret any stored diagnostic trouble codes. If there are no stored codes, one strategy is to scope the engine, that is evaluate the...
Question
My door does not lock or unlock. Would I need to replace a fuse or buy a new key?
I believe the door lock actuator has failed, not a fuse or key. BMW door lock actuators (part electric, part mechanical) have what is essentially a two-stage lock, and can fail and become "double-locked". Sometimes, exercising the "unlock/lock/unlock" cycle multiple...
Question
What could be wrong with my car after slight impact and antilock light comes on? 1995 BMW 525i
Hello - there are a couple of possibilities here. You may not have noticed, but quite likely the anti-skid brake system (ABS) was energized during your skid. This may have caused one of the valves in the system to stick,...
Question
Car will not start. It was running fine, normal shut down, and wouldn't start back up five minutes later.
It really does sound like your battery has gone dead. Sometimes they can develop an internal short where they seem fine one moment then go dead the next. The indicators on the chargers usually don't tell the whole story. ...
Question
My DSC not working and the car is going into limp mode in my 2005 BMW 525i
Hi there. From what you are saying it sounds like you may have a serious transmission failure. These codes and issues typically comes up when there is excessive slippage indicated in the transmission. It is possible that there is a...
Question
My car overheated and now will not start. I believe I have a water pump issue and possibly a blown gasket.
A faulty water pump will not cause a failure to start. If the water pump is not working, all that will happen is after you start the car, the engine will overheat. If the head gasket has failed and coolant...
Question
Do I take off the fan to change my alternator belt?
The fan is the first thing to come off. The fan clutch is mounted on the water pump by a big nut. The nut has reverse threads, so it is loosened by turning CLOCKWISE rather than the normal counter-clockwise. You...
Question
Driver side door will not open from the outside
You probably just need a new door handle. The business end of the door handle is made of plastic or cheap metal and eventually it breaks off inside the door. Most door handles can be replaced from outside the car...
Question
Leaking coolant onto belt
It sounds like you have a leak accompanied by overheating. From what you have described though, it is unclear if the overheating is being caused by the coolant leak (low coolant can cause overheating) or the two are just simply...
Question
Car Wont go into gear
Hello. I'm sure this is been done but ensure that the clutch release bearing and a whole clutch kit was installed when you replaced the clutch. A complete couch job consists of a pressure plate, a flywheel, a clutch disc...
Question
how much would it cost to replace battery in 2007 BMW 525i?
The average quoted at this page is $212 but if you input your specific location you will get a more precise quote and scheduling options for the mechanic to perform the replacement at your location, at your convenience. Please let...

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