Symptoms of a bad camshaft sensor?

Trini7919 · 10th March 2007, 01:48

my 01 m5 drives like sh*t, its gutless , idles like its possesed , so i changed the air mass meters and the same problem is there (sos) i need suggestions people im tired of spending for no reason,

Symtoms : car idles like its misfireing , when at a full stop car revs up and down . when i floor it the hesitates.

rdm190 · 10th March 2007, 01:56

You have all the classic signs of a bad CPS, but CPS's usually throw codes if the symptoms are that bad. Have you had a SES light at all?

Have you fault codes check, see whats up.

Trini7919 · 10th March 2007, 02:59

yes the ses light is on .thanks i ordered new cps it be here on tues day (hope it works)

Wicked5 · 10th March 2007, 03:08

How many did you order? There are two on each bank one for intake and one for exhaust.. I just replaced them all.

rdm190 · 10th March 2007, 03:31

Quote:

Originally Posted by Trini7919

yes the ses light is on .thanks i ordered new cps it be here on tues day (hope it works)

You should really pull the codes. There are two CPS for each bank, an exhaust and intake, 4 total.

So the guessing game is not a good idea..

Trini7919 · 10th March 2007, 03:35

scanner read out;;;;;;; misfires on all spark plugs ,camshaft sensor(bank one) air mass 1 and 2.

i change every thing but the cam

rdm190 · 10th March 2007, 03:51

Sounds like you have it nailed down. Hope the CPS solves your issues.

Finnishfan · 10th March 2007, 18:57

I had the same issue so I tested the car last week. One sensor bad, and I will be changed on monday. You guys think I should change both while we're at it?

ard · 10th March 2007, 19:16

Quote:

Originally Posted by Finnishfan

You guys think I should change both while we're at it?

There are 4: bank 1+2 exhaust, then bank 1+2 intake

Since the car will run, just poorly, with bad CPS's i'd say not replaicng them isn't such a risk... Not sure how much 'labor overlap' there is- if it is one hour of overlap, then it does make sense to replace.

Wicked5 · 11th March 2007, 14:20

I can tell you that on the driver side bank, since you are in there you might as well do both. I had to remove two coolant lines in order to access the sensors so it just made sense to me to do both.

The passenger side was much easier, just remove the airbox as described in the tricks and tips and you can fit a hand with tool in that space.

I kind of subscribe to that old light bulb analogy.. the one where as soon as the left marker light goes out and you fix it, its right back to the parts store because the right one got jealous and burned out.

And yes a bled the cooling sytem after I was done.

Those sensors weere about $100 a piece,or were you taking it to the $tealer?