Re: More Noob Questions
I assume you mean it won't rev past 5000 in say third gear at WOT?
When was fuel filter last changed? Air cleaner?
As Mike says, start by replacing all normal serviceable parts. Distributor cap and rotor, correct spark plugs etc.
Then check high tension leads and especially the master lead not only for resistance but also that their connections are clean and not corroded.
Check ALL vacuum hoses for cracks, leaks etc. Down low at back of inlet manifold there should be a couple of VSVs. Check their filters and that their vacuum hoses are correctly routed. BGB has info.
To check the actuator on inlet manifold for correct operation. 1. Engine off. 2. Observe actuator position. 3. While watching actuator, have someone start engine. 4. Actuator should immediately snap closed.
You could also disconnect and plug the actuator's hose and take it for a drive ?
A partly blocked CAT or exhaust muffler could also cause this symptom.
Incorrect cam timing is also possible but very unlikely.