It's important that you run a computer diagnostic test to see what the computer is reporting. When the check engine light comes on it's telling you that the computer has "stored a problem code" meaning that you're supposed to check into what's going on. In general, the computer will know quite a bit about what's wrong, but it can't tell the difference between out of fuel, a blocked filter or a failed fuel pump. On the other hand, it could be a throttle position sensor or an ICM and the computer WOULD know what's wrong or at least point you in the right direction.
If the engine cranks & cranks & cranks before it starts even though it's warmed up already.
It will for maybe 3 seconds , when the key is turned to the run position , before you start the Explorer
Broken timing chain or belt
No of cranks used in 6 cylinder engine
small journal cranks can be ground to a minimum of 1.9585 (rod journals) big journal cranks 2.0685 ( rod journals)
have vehicle scanned to determine the problem
Put your foot on the brake.
If your check engine light is staying on with the engine running , a malfunction has been detected with the emission control system . Have your Explorer scanned for any trouble codes to diagnose and repair the problem
Maybe try taking care of and maintaining your vehicle, it might last forever.It depents,how you,star running your Explorer and how you stop it.
No inertia switch on an Oldsmobile.
engage the parking brake , or shut the engine off
Have the intake air temp. sensor checked .Two wired plug on top of intake manifold. Check fuel pump pressure.