The idling problem exists mainly but is not limited to first cranking the vehicle and letting it idle. Also, I have noticed that when the air conditioner cuts on, it pulls the rpms down even more. Not enough to stall the truck, but lower than usual and my ac does not cool as well with this condition.
my first guess was that it had to be something in fuel. My plugs and wires are brand new and this vehicle is very well kept up. I have rented a fuel pressure tester from autozone (never been used).
my question is: is it right to assume that it could be my fuel pump or my fuel pressure regulator?
if so, how can I determine this using the fuel pressure tester, how do I use the fuel pressure tester for this application, and where do I connect the fuel pressure tester?
also, my check engine light is not on and has not turned on since I have been having this problem.
any other thoughts on what this could be?
have the same problem?
Monday, September 13th, 2010 AT 3:50 PM