Hot answers tagged

15 votes

LTFT and STFT values are off and don't make sense

I think I have an answer But bear in mind that this is my assessment with the limited information at my disposal. I'll walk through my reasoning here. If someone finds a flaw in my logic then I'm ...
  • 39k
13 votes
Accepted

What's the difference between BMW 320i SE and Non SE?

I believe SE stands for "Special Equipment" on BMW. Basically individual options. The "M" on the steering wheel means it has an M Sport package, mostly prettier design trim - bodykit, M badges, ...
10 votes

Is this tyre damage a problem?

I'm guessing that these are BMW spec runflat tyres? This isn't the first time I've seen such damage. Apparently, because they are intended to be used in an emergency without pressure, the sidewalls ...
9 votes

Losing coolant fast after just fixing radiator

They may not have bled your cooling system properly As a possibility, if you had air trapped in your cooling system it would expand as the engine approached operating temperature. It would ...
  • 32.8k
8 votes
Accepted

Distinguishing between mechanical and electrical failure in ignition diagnosis

If you are hearing the starter turn (typical starter whir), the most probable problem would be the one way clutch has gone out. It's the part of the starter with the teeth on it which engages the ...
8 votes
Accepted

BMW 1 Series (2016) Bumper Repair

It will most certainly be more expensive if you get a professional to repair this bumper for you. However, it will be a safe investment on your trade-in if it is restored professionally. We cannot ...
8 votes
Accepted

How can I move my push-to-start car with the starter?

I've got the same sort of function on my Seat Leon (and on my old BMW 320D) - if you drop the clutch quickly enough it will move the car a little. Although I doubt that's enough to get you clear of a ...
  • 2,645
8 votes
Accepted

Lifting Support Under Panel BMW

Thats just a piece of plastic, needed to avoid scratching the body-frame when lifting the car. Assuming no further damage (please check, as it is likely that something else is bent or destroyed) it ...
  • 7,953
7 votes

BMW M52 coolant refilling

I do not understand why the coolant system needs a bleed screw at all Because air pockets. Filling up coolant doesn't necessitate that the entire system will be filled with coolant. There are parts ...
  • 39k
7 votes

Distinguishing between mechanical and electrical failure in ignition diagnosis

If the picture you have attached is similar to the starter on you car, then the power to the starter motor is only delivered if the solenoid operates, so the solenoid must be working. However, the ...
7 votes

Cold air intake causing rich condition

I agree with @JPhi1618 that it is related to the MAF sensor. From the picture you provided in your comment, it appears your (really good looking) MSR intake comes with its own MAF sensor housing. I ...
  • 6,017
7 votes

Car gives knocking noise from front during braking

A knocking noise when braking (or during less noticeable maneuvers) can be attributed to worn front suspension parts - especially control arm bushings. The image below is from some random heavily ...
  • 13.2k
6 votes

Manually shifting an automatic transmission?

I've rebuilt a few transmissions (actually a lot of transmissions LOL) and no, manually shifting is just fine. All your doing is replacing the TCU with your own shifts. So your just fine manually ...
  • 71
6 votes

Engine on BMW G650GS 2011 does not start when it's hot

Your problem is caused by decompression valve problem in 650 engines prior June 2012. Only way to get rid of it permanently is to replace decompression valve, which fortunately is not a huge job. BMW ...
6 votes
Accepted

Car can't start after rocker gasket change

The OP responded in the comments and stated the fix. He primed the motor with carb spray to get it going. Perhaps it had a mechanical fuel pump or needed the fuel rail primed in some way. OP's ...
  • 32.8k
6 votes
Accepted

Advice for buying used car

The mileage of the car doesn't matter as people can get the mileage reversed. Which make the buyer dumb infront of them. I sugget you Look for the obvious signs like the head-gasket's condition, any ...
  • 84
6 votes

Cold air intake causing rich condition

I believe that what @JPhi1618 stated is a major factor in your rich condition: Could the different air flow path cause issues for the MAF which would have been tuned specifically for the stock ...
  • 161
6 votes

Can the warning chime tone of a 2007 BMW 525i be changed, or shortened somehow?

I know nothing about BMW, but this might help. My VW Jetta had a "La Cucaracha" warning buzzer that was plugged into the fuse box and looked like a relay with a speaker on it. Rather than unplugging ...
  • 13.2k
6 votes

Identify that part of my S56 BMW M Coupe

Are you referring to the Driveshaft FlexDisc?
  • 6,017
6 votes

93 325i E36 - help with tires

I'm afraid the only way to resolve this is to get matching width wheels plus matching sized tyres across the back axle. Even with the same sized tyres on different width wheels, the effective surface ...
6 votes
Accepted

Car rattles at low RPM

Sounds like it's possibly involved with the transmission and/or clutch. But first, I would check all the heat shielding on the car to make sure that's not a factor. When the transmission is engaged (...
6 votes
Accepted

Rough Idle & Stall While Stopped

I would check the idle air control valve, or the IAC. This might likely create the exact symptoms you describe. Determining if it's working properly is a bit of a chore for a DIY person, but this is ...
  • 12.3k
6 votes
Accepted

BMW X5 E53 - Bord computer / AWD issues

Please take the following text with a grain of salt as this is just an interpretation of a complex problem from a random dude on the Internet The steering angle sensor issue (DSC) is the most ...
  • 7,953
6 votes

Oil in the cooling reservoir

Welcome to Mechanics SE! A white milky, mayonnaise like substance is indicative of oil and water mixing. This could be down to a failed cylinder head gasket or a failed oil cooler. I'm not sure if ...
5 votes

Car engine is overheating while Coolant Temp Sensor is normal

I would suggest that you don't have an overheating problem, but that you need a new radiator cap. If the current radiator cap doesn't keep the pressure in, it will do as you describe. The pressure ...
5 votes
Accepted

Correct procedure and cost repair BMW timing chain (BMW 318ti)

BMW's plan was for it to never be changed. Looking at some of the forums, I think advice given from this BMW site seems about spot-on: Well-l-l, I hate to say "never" but the point being, one often ...
5 votes
Accepted

How to know BMW e46 AC type

From this PDF, it shows the difference and it's pretty easy to see. This is the IHKA control in the e46. It is an automatic control. This is the IHKR control in the e46 (with the radio above it). It ...
5 votes

AirbBag and 4x4 light is on after changing BMW X3 battery. Why?

The standard battery is an absorbed glass mat type (AGM). It is to be "registered" with a scan tool. If this is not done the vehicle can adjust to the new battery on its own. When the battery ...
  • 11.5k
5 votes
Accepted

AirbBag and 4x4 light is on after changing BMW X3 battery. Why?

Its common. Usually goes away in a day or less. If not, you need to have the truck reset by the dealer or bmw mechanic. This has a good explanation. Not your same model but it applies.
  • 3,363
5 votes

Can the warning chime tone of a 2007 BMW 525i be changed, or shortened somehow?

I'm not sure about BMW, but I used to develop these chimes for Ford and Fiat. They were implemented in the vehicle media system, aka radio. So, in order to change the volume or type of chime one must ...
  • 217

Only top scored, non community-wiki answers of a minimum length are eligible