E46 318i 1999 (2l) Power Problems - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 09-14-2009, 05:54 AM
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E46 318i 1999 (2l) Power Problems

Hi all, looking for some advice on my 1999 318i

(one with the nearly 2l engine)

1st - I seem to be lacking power. On my drive to work i avg 31MPG which is fairly good? but i seem to be low on the power?

I had a 1995 E36 1.8 and it seemed so much more lively than this heavy bugger! Some peep have said its heavier and got more equip, but i cant believe its this under powered.........

Iv changed the CCV and broken vacuum tube, That really helped giving more pulling away power...

My DISA valve makes a rattle, but from what i've read this doesnt affect the power too much???? IS this true?

And i unplugged my Cam sensor, and noticed no difference to the running???? Nor did any warning lights come up! Is the correct??? What should happen when the cam sensor is unplugged?

Bit confused with this one, and advice or info would be great )
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#2 (permalink) Old 09-14-2009, 08:25 AM
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When the cam sensor is unplugged,the ECU will take signals from other sensors on being the crankshaft sensor, the cam sensor controls the firing of the injectors, so if it has gone your MPG would go down, which you say yours is fine.....I would get a full diagnostic done.

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#3 (permalink) Old 09-14-2009, 08:39 AM
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When I say cam sensor im referring to the one mounted at the top on the front of the engine, with 3 pin connector, held in with 1 torx bolt.. Hope im referring to it by the correct name.

Right, iv had the ECU read and checked 3 times now. Each time I’ve been told there are no faults or error code, and someone had looked at it live and says they can see no problems………

When the cam sensor is disconnected should it put a code or light up? Because I don’t get either. I have driven the car for a 100 miles with it disconnect and then reconnected it, and noticed no difference in power or mpg! Is it functioning or not… Would replacing a broken one result in more power….

As I said I can get 31mpg but I do have to be very very gentle
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