I have a 2003 Ford f150 4.6 Triton. For the last several months, sometimes when I started the truck, rpms would immediately drop to around 300-400. It would then kick back up to around 800 and run fine. A couple days ago, it got where it wouldn't come back up and wouldn't idle at all.
I found that if I give it a little gas to bring it up to 1500 rpms, keep it there for a few seconds, and slowly back off, it will idle but at around 600 rpms. Then, if I give it any gas at all, when I let...
Low or no idle