Chow

Master
1163 points
Registered technician, specializing in BMW, MINI, Honda and Toyota
Recent Activity

Question Asked: Repeating coil failure - tricky
March 15, 2011, 02:27 AM
Hi, I am writing in regards to my friends 2003 Mazda SP20 2.0L The car initially had the variable intake butterflies fail and the issue corrected, after a month of driving the car exhibits unusual running and idling characteristics, for example, the car randomly stall when coming to a stop and would restart after sitting. After driving several weeks with occasional stalling, the car starts to misfire and swapping of coils, deemed the shared coil for 1 and 2 faulty, the coil was extremely hot and a visual inspection indicated coil failure, as a bulge is protruding from the head. Replaced the coil and the car ran ok for a while until the symptoms repeated itself and the new coil had failed on the same cylinder as the first set. I have not had time yet to check the car first hand unfortunately. Are there any common issues that exude similar symptoms? I plan on checking the inputs to the coil and the PCM which from what i have read is located under the passengers footwell. Wiring was checked apparently for crimped wires and shorts. I believe it could be coincidence the coil failure occurred several weeks after repairs carried out in the area of the intake. Unsure at this stage. Thankyou
Question Answered: Will not start.
February 25, 2011, 10:26 AM
Possible bled lifters, common in E39 M52 and M54 Hold your foot on the gas and crank for about 6 seconds, if a change in note or attempt to start is present, try again. If it starts it will smoke for a little while Otherwise check for spark by removing the plug, sticking it into the coil and earthing the threads on a metallic grounded component and check for spark while cranking. Hold you a screw driver on an injector and put your ear against the screw driver and listen for ticking while cranking, if it is clocking you can assume it firing the injectors, if not there is an issue with the DME. This is only a garden path towards a labyrinth of diagnosis paths for "no start" issues. Going any further requires proper mechanical experience. sorry
Question Answered: Car won't start. Battery ok. Just makes humming sound when I try to start it.
February 25, 2011, 10:19 AM
IMO three possibilities, in order of probability 1. Starter solenoid 2. Ignition switch 3. EWS issue Good luck
Question Answered: how to disable the asc+t on a bmw 740il
February 25, 2011, 10:17 AM
There should be a button in the centre console which you press and hold to temporarily disable it till next ignition cycle.
Question Answered: Automatic headlights not coming on automatically
February 25, 2011, 10:16 AM
Possibly a fault in the Lightmodule or the rain/light sensor To be checked by your nearest dealer
Question Answered: car shakes
February 25, 2011, 10:15 AM
Check the rear shocks, if it has large spherical black units attached to the shocks, they commonly fail internally and require replacing. You are able to replace it with a new NORMAL shock without the round unit, should be better but you need to buy a shock and spring. Also check the bushes Goodluck
Question Answered: trans fail safe program light comes on
February 25, 2011, 10:12 AM
I dare say the trans is on its way out, oil level and condition is to be checked and further diagnosis required
Question Answered: trany
February 25, 2011, 10:11 AM
MANY!! consult BMW parts schematics
Question Answered: Car won't start anymore.
February 25, 2011, 10:11 AM
Were the right plugs fitted? the wires put back in the right place? anythings else removed such as earth straps or the coil plug? replace or charge the battery and check the things i have told you the noise could be a number of things and should be checked by a professional once the car is running.
Question Answered: vibration in engine compartment when engine is cold
February 25, 2011, 10:08 AM
Sounds like cold running values are disturbed possibly due to component failure. Codes are to be read and diagnosed
Question Answered: Gas Tank
February 25, 2011, 10:05 AM
The fuel level claim is false. It should be kept even and is done so by means of a series of hose and a siphoning effect. NO CHIP There should actually be a nationwide information database, but is more so for more common faults and remedies. BMW in America should also have a technical support, its only proper Does sound like a fuel transfer issue. Get some parts schematics from parts and you will see what i mean Good luck
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Car Review: 2010 BMW M3
June 08, 2010, 02:49 AM
Have done several laps in the new E92 M3, handles and delivers power greater than any other road car i have ever driven, aural ecstasy to say the least. Very aggressive look and style The new screen setting, menu (CIC) and monitoring system is brilliant
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