My d15 had a bad fuel filter, it stopped the fuel delivery completely, so after I changed it, the car ran OK for a few days until the check engine light came on and it boggs and idles rough now, any suggestions on where to start?

. Check for codes:

https://www.askmehelpdesk.com/cars-t...tml#post832012

. Replace the Ignition Control Module (ICM) and coil, if the problem persists:

https://www.askmehelpdesk.com/cars-t...tml#post265896