My 1997 328is bmw ran perfect and now is running rough....took it to the shop and they replaced cam shaft sensor but still running rough im not sure were to start. also my add coolant light is coming on but when i checked, coolant it seems to be fine and not low.

check the cam shaft position sensor
check fuel pressure at the rail
run the fault codes again

BET YOU REPLACED THE CRANK SENSOR ON THE HARMONIC BALANCER, CAM SENSOR IS ON THE CYLINDER HEAD.

code p0017 refers to crank/ cam oosition sensor bank 1 sensor B -correlation ===causes --wiring--CKP sensor--CMP sensor--mechanical fault.
It also refers to control modules, cooling fan--no signal===causes -- wiring--ECM.
If it has a timing chain then the the advice that it will not be the chain is good. So I suggest checking out the cam/ crank sensors and wiring

did your engine get hot the second time. if it was me i would have an estimate for everything to be perfect and take the person who did it and take them to court. sugar could ruin your engine, and you could do the same if u run it too lean, cause your cyl head temp could get really hot.

sounds like the timing belt/chain has slipped or broke. Getting ready to tear one apart 5.9 Had the same symtoms your has.

i just had the same problem in my bmw 325i. Probably vaccum leak or exhaust leak. Check that nothing came loose in these areas. It takes time for your car to learn the new CPS (cam pos. sensor) so give it a few days and reset the code again and see if it works.

Your engine is not getting the petro. Check the fuel filter and fuel pump.

Computers aren't ALWAYS correct. If a code wasn't cleared after the original problem, it will read the same codes off to the diagnostic. I would remove the wire connector to each injector while it's running. If one of them makes no difference THAT is your culprit. Let me know please!

You need to check the fuel pressure, if not enough it will run rough.

I had the same issue with my 2000 528i. You more than likely need to have the Vanos seals replaced. BMW will tell you that the Vanos unit needs to be replaced but the problem is more than likely isolated to the OEM seals that shipped with the Vanos. This issue has been reported by several BMW owners. This issue has been thoroughly documented and reported to BMW in an effort to seek a corrective fix. Since BMW failed to address the problem, the guys that investigated the issue started their own company providing superior Vanos seals to the deficient OEM Vanos seals.

The company is Beisan Systems, LLC. I ordered their Vanos seal kit and had them installed at a local BMW performance shop for less than half of what BMW wanted to charge me for a Vanos replacement with the same faulty seals. Besian also provides step-by-step DIY instructions; if you have the time.

http://www.beisansystems.com/index.html

Good Luck.