Bit of advice

plumber vic · 20-05-2013, 07:04 PM

My Mrs 120 petrol 1 series 59 plate
when you get gear wrong at low revs Engine light comes on then goes off,
Been told by stelers that it could be coil pack £25 or sensor £300 what sensor would this be for that sort of money ???

Thanks Vic

billyboysm3 · 20-05-2013, 07:05 PM

Coil pack will make it sound like a tractor from experience.

I bet the sensors only £14!!

Monkey · 20-05-2013, 08:38 PM

Hi Vic, Sorry to hear you have the troublesome N43 engine

If BMW could turn back time they'd definately erase this one!!

Basically it will be a coil, plug or injector. BMW dealer will tell you that all 3 need to be replaced on the effected cylinder to achieve a permanent repair. This is true to an extent, they have made the injectors relatively cheap to compensate for this. (approx £100 plus vat).

From experience with a car of your age its most likely to be the coil pack. I would replace this first, its a very easy job to do yourself if you're even slightly mechanically minded. Coils are approx £25 plus vat.

I have seen repeat faults on the effected cylinder if all 3 components are not replaced, but this is not a certainty. Probably worth a punt at this stage just to replace the failed component and monitor.

You will probably end up replacing all coils, plugs & injectors at some point in the cars life.

plumber vic · 21-05-2013, 01:56 PM

Thanks James

20-05-2013, 07:04 PM	#1
plumber vic S5 - Full Throttle Join Date: Jan 2011 Location: sevenoaks kent Posts: 428 Casino cash: $15412	Bit of advice My Mrs 120 petrol 1 series 59 plate when you get gear wrong at low revs Engine light comes on then goes off, Been told by stelers that it could be coil pack £25 or sensor £300 what sensor would this be for that sort of money ??? Thanks Vic

20-05-2013, 07:05 PM	#2
billyboysm3 CSL Register Uber-poster! Join Date: May 2011 Posts: 3,001 Casino cash: $25206	Coil pack will make it sound like a tractor from experience. I bet the sensors only £14!!

20-05-2013, 08:38 PM	#3
Monkey S5 - Full Throttle Join Date: May 2013 Location: Haywards Heath Posts: 266 Casino cash: $7387	Hi Vic, Sorry to hear you have the troublesome N43 engine If BMW could turn back time they'd definately erase this one!! Basically it will be a coil, plug or injector. BMW dealer will tell you that all 3 need to be replaced on the effected cylinder to achieve a permanent repair. This is true to an extent, they have made the injectors relatively cheap to compensate for this. (approx £100 plus vat). From experience with a car of your age its most likely to be the coil pack. I would replace this first, its a very easy job to do yourself if you're even slightly mechanically minded. Coils are approx £25 plus vat. I have seen repeat faults on the effected cylinder if all 3 components are not replaced, but this is not a certainty. Probably worth a punt at this stage just to replace the failed component and monitor. You will probably end up replacing all coils, plugs & injectors at some point in the cars life.

21-05-2013, 01:56 PM	#4
plumber vic S5 - Full Throttle Join Date: Jan 2011 Location: sevenoaks kent Posts: 428 Casino cash: $15412	Thanks James