My 2002 civic was running fine when it all the sudden almost dies and now it won't go over 5-7 mph....
Have you shut the car off and tried it again?
Clogged manifold or catalytic converter. Had one do the same thing. Check this while engine is running open hood a look exhaust manifold it will start to turn cherry red if its clogged if not look at catalytic converter it will also turn cherry red if it is clogged.
Looking for a Used Civic in your area?
CarGurus has 61,316 nationwide Civic listings starting at $950.
Search Honda Civic Questions
Honda Civic Experts