Hey there, just bought a 92 GMC sierra a few weeks ago and it was running great before 3 days ago when I ran out of fuel, and now when I have the cover over the air filter and throttle body the truck won't run unless I press the accelerator. It's a 5.7l V8 with 157k on it, and if I remove the cover the truck runs well with the idle sitting a little low... Any ideas as to what's happening and how I can fix it, would drive still but I'm worried that dirt or something is going to fall into the throttle body and cause even more problems.. Thanks in advance!