Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Good evening. I would like to say not to lubricate the throttle body. Instead service it by using throttle body cleaner and a nylon brush (Old toothbrush works great). This is a drive by wire system that over time carbon builds up and restricts airflow. Remove the air inlet tube and I use the same screw driver to hold open the throttle plate and spray with cleaner top bottom sides then scrub down with the brush respray and re scrub repeat as necessary. I then start the car and hold rpm at 2500rpm with someone else's foot or pry bar and run the rest of the can through the intake while running and well ventilated area. Good luck and keep me posted.
Vacuum leak will be next I use some brake cleaner or some left over cleaner from throttle body with engine running start spraying around the intake area looking for an rpm change. The pcv line to the valve cover are known to crack over time but the upper intake will need to be removed not a bad job to remove if needed. Is there a check engine light on yet?
Smart move if you are not comfortable with the repair then let someone else do it. I have been at this for 20yrs and fix everything. For time sake I sent my wife's car to Volvo for the timing belt and cam gear replacement. That is what they see and work on and glad I did saved me 230 dollars for the tools that I have not yet needed and 6 hrs of my time. I did not have to learn on the bosses car. Keep me posted and please feel free for further input. Also remember to rate my services and Accept Thank you. Will be fairly simple repair just remember it is your car and you have the right to see your parts and decline any work been a lot of poor news on here lately from people getting taken advantage of.
Please remember to rate my services and Accept Thank You.As always any further assistance with this topic is open to you. Thanks again.