Check the Height Sensor.
most times it is the trailer plug on back of truck
You suspension is as long as your employer says. You cannot change it to sick leave, even if sick.
bad switch or vacuum leak
A Ford 1999 Expedition engine is probably not seized if it will start and idle but will then not stay running. This could be due to a clogged fuel system, faulty injectors, faulty spark plugs or a wiring problem, or even a faulty distributor.
To be 100% sure. Auto Zone will check your codes for FREE. It maybe spark plugs, wires or even a bad coil pack.
A PCV or connecting hose problem can cause great issues with a 1997 Nissan pickup idling. In fact, this can keep it from running, even if it does start, and the engine turns over.
Perhaps the suspension air bags in the back have become dry rotted? (cracked and deteriated) therefore the air pump stays on trying to fill them even though they are leaking? It's a common problem with cars that have suspension air bags. They can be expensive to replace yet there are cheaper, aftermarket, kits out there on the internet.
to keep the microorganisms in suspension and maintain an even temperature.
if you take apart your head gasket and then replace the oil pump then you might not even have to adjust your suspension
suspension is better because even if it tastes nasty it can always be flavored and syrup cant and some times have a bitter taste
It has to do with the suspension,probably worn out shock`s or spring`s or both,maybe even a strut.
its not suspension aha