Aboutautohelp Expertise On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.
Experience Held over 15 GM certifications prior to retirement in 1989.
Organizations Prior to retirement held several ASE certifications, numerous Factory certifications.
Question I have a 1995 sedan deville. It had a ping when I drive at very low speed i.e. take off. I recently had some BG 44k added and now the ping every now and then. I sounds like its missing something. I does not lack any noticeable power
Answer IS or has the CHECK ENGINE light ever illuminated on the dash while driving the vehicle ?.
Possible faults:
EGR valve needs to be checked for proper operation and cleaning.
KNOCK SENSOR may be intermittently faulty.
A severe carbon buildup has accumulated on top of all the engine pistons and needs to be cleaned off via the use of a product called TOP ENGINE CLEANER or similar product.
