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335i

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Question
My car will not crank and has a yellow exclamation point on the dash.
Hi there. There seems to be a couple of things that are not functioning. First the battery seems to have a low power and possibly a burned cell. Also, the fuel system may have air in it due to running...
Question
I have a 2008 BMW 335i battery died. I have been told I need to have it mated or registered to my electrical system to prevent ove
Hi there. This video is a pretty good tutorial on removing and replacing the battery on your 335i. You may have to reset the electrics on the vehicle, which this video shows how to accomplish this step. There is no...
Question
How do I know if it is the Water Pump or thermostat that needs replacing?
In your question, you have not stated the "fault" you are experiencing, consequently I will assume it is overheating. If not, please write back in with clarification so that we can best assist you. There are a myriad of causes...
Question
Just drained/replaced coolant and now the temp gauge doesn't work
Some vehicles have air purge points that must be opened when coolant is re-filled. If you don't open the purge points to force the air out as you add coolant in, air can get trapped in cooling passageways and that...
Question
2007 bmw 335i serpentine belt keeps breaking
Hi There, It sounds like you may have a tensioner pulley that may have a worn out bearing that may be putting additional stress on the belt as it turns. The other possibility may be that the tensioner pulley may...
Question
Car hiccups or slight jerks at steady rpm
Ignition failures are more common on your car than fuel injector failures, and the mileage would be about right for coil failures. It takes several subsequent misfires for you to be able to notice it on the road, so if...
Question
Replaced coil 3 per code, code still appears, auto purrs in the morning but feels like it starts sucking air after driving 30min
Codes generally cannot be used to condemn specific parts. To illustrate, you could have a circumstance where the wiring to a coil is simply faulty and the fault in the wiring causes the part (in this case, possibly a coil)...
Question
Strange rattling/tapping noise at low rpm when accelerating lightly
Hi...the noise can be diagnosed by taking all the belt driven accessories out of the picture by momentarily running the engine without the serpentine belt. If the noise remains, then the search is focused on internal engine parts. If the...
Question
Bmw misfire
You will need to have the cylinder number 6 compression tested to see if there is low compression in that cylinder? If it is low then have the cylinder pressure tested to see if the valves or piston rings are...
Question
Hello, i own a bmw 335i n55, AT, recently i replaced the sparkplugs and one coil. Since then i have the code P112f. When start up
This code indicates a manifold absolute pressure to throttle valve angle discrepancy. This means that there is some confusion between the mass airflow sensor, the throttle position sensor, and the manifold absolute pressure sensor. It is possible that one of...
Question
I have a 2007 bmw 335i smoke
Running regular fuel in an engine that takes premium fuel only may cause engine to get a pinging noise and may not run correctly until you get the correct fuel in it. Have a mechanic like one from YourMechanic check...
Question
Dealer advised during brake fluid flush that fluid has congealed in tank. Tank needs to be replaced unless a way can be found to r
Brake fluid can congeal in vehicle braking systems but it is not common. The contaminants that cause this vary from moisture to system materials wearing off to adding mistaken fluids to the brake fluid, such as engine oil. The remedy...
Question
How much does it normally cst to rebuild a N54 engine? BMW 335i
As you may know, the cost to rebuild a motor may vary widely due to the many options available and potential supply of parts or the damage done to your existing motor. Typically, you can find long blocks for this...
Question
po598 code on bmw 335i 2007 cause
If the battery voltage is way out of range (low), yes it is possible. The complex electronic systems on modern vehicles work within narrow voltage ranges and so a faulty battery can cause malfunctions in devices that are electrically powered....
Question
Hello, i turned off my bmw 335i while still on Drive gear. I put it in park and tried turning it on. It does not turn on. What co
This is something that is likely related to what is called a neutral safety switch, which prevents the vehicle from being started while in gear. Your vehicle has a neutral safety switch that will prevent the vehicle from starting when...
Question
Q: Rough idle and shakes at stops
What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...
Question
2007 bmw 335i code for ignition control module. Trying to figure out which part to get to replace
The code related to the ignition module suggests that either the ignition module itself is bad or the connections to it are not good resulting in erratic ignition timing and potentially misfires. In some cases, depending on how the ignition...
Question
Is the oil pan gasket the same thing as oil gasket
The term "oil gasket" is not helpful. It could refer to any number of gaskets in your engine. . "Oil pan gasket" however is a specific name that refers to the gasket on the oil "sump" or "pan" Gaskets are...
Question
My BMW 335i n54 coolant line hose o ring needed to replaced. I think coolant is leaking from there.
The best thing to do is get a coolant pressure test and hook it up to your radiator or reservoir and pressurize the system to 15 psi. If there is a leak, it will appear under a pressure. If you...
Question
bmw 335i rear main seal
The part required is the seal. A variety of special tools are required to perform the replacement including an engine support bar (and accessories), a transmission jack, a calibrated torque wrench, a flywheel holding tool, a seal removal tool and...

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