Misses on idle and no low rev pull

[britlad]

After a recent MoT my 1999 2.8 would not idle although recovered mostly after about 10 miles. Since then it has poor pick up from low revs and will cut out on idle from time to time. I have just changed the plugs (60k) all looked good but no improvement. Any ideas or suggestions please.

Michael

 

[Grumps]

Cam sensor. I had the same symptons on mine. Changed crank and cam sensors and all is well.
Mine was stalling on tickover and pull off sometimes and had a lack of power. Get it on a code reader, it should flag it up. If you don't have one a member local may be able to help you.

 

[jonco]

Grumps is probably right but as he says get the codes read - should always be first step.

 

[Brian4]

As above code readers will point you in the right direction. By the sound it is probably cam sensor but there are 2. And also a leak in the air inlet system rubber hoses.

 

[colb]

Good calls for getting the codes read, if camshaft or crank sensor faults show up replace with OEM parts don't waste cash on pattern parts or you will end up paying twice.

 

[the Nefyn cat]

As above, code reader and OEM parts. Inlet sensor went on mine a short while ago, sounds like the same symptoms.

 

[Ianmc]

As above code readers will point you in the right direction. By the sound it is probably cam sensor but there are 2.

Didn't realise the 2.8 has two cam sensors, my twin cam M44 only has one.

 

[Brian4]

Didn't realise the 2.8 has two cam sensors, my twin cam M44 only has one.

The twin vanos 2.8's had two sensors 1999 onwards M52TUB28

 

[t-tony]

Doesn't the M44 have an inlet and exhaust cam sensor?

Tony.

 

[jonco]

Doesn't the M44 have an inlet and exhaust cam sensor?

Tony.

It has a cam and and a crank sensor - unless I've missed something
http://www.realoem.com/bmw/enUS/showparts?id=CH72-EUR---Z3-BMW-Z3 1.9&diagId=11_1558

 

[t-tony]

The six pot engines have a crank sensor and one for both camshafts Colin. I was just curious. The M44 is a 16 Valve Twin cam isn't it?

Tony.

 

[jonco]

The M44 is a 16 Valve Twin cam isn't it

Correct

 

[t-tony]

So don't they have a position sensor for each camshaft ?

Tony.

 

[jonco]

So don't they have a position sensor for each camshaft ?

Tony.

I'm only aware of one - but I may be about to learn something I'm certain somebody will soon enlighten us.

Edit https://www.pelicanparts.com/BMW/te...r_Testing/24-FUEL-Camshaft_Sensor_Testing.htm

Can i get back to my Scotch now - cheers

 

[t-tony]

I'm only aware of one - but I may be about to learn something I'm certain somebody will soon enlighten us.

Edit https://www.pelicanparts.com/BMW/te...r_Testing/24-FUEL-Camshaft_Sensor_Testing.htm

Can i get back to my Scotch now - cheers

Ha,ha. Sorry mate, It didn't distract me from mine Col.

Tony.

 

[Ianmc]

So don't they have a position sensor for each camshaft ?

No, just one, and no vanos, we're real simple (as is the car!).