Where do I find the engine number on a 1998 ford explorer?

Number 11 is a 20amp Maxi fuse
number 4 is a 10amp regular size
number 8 is a 10amp
number 33 is a 15amp

This could be a number of things causing this. Is your check engine light on?

stop by local parts store (Autozone,Advance, etc) and have them do a free fault code test. They can print out a list of faults and clear the codes

The VIN should be available in several places. You should be able to see it under the windshield in front of the driver's seat (look from the outside), or on a sticker on the driver's side door pillar (where the door latch is). It will also be stamped onto the engine block.

heres a vacuum diagram for a 1998 ford explorer with the v-8 engine, hope this helps,

Cross referencing the part number - it looks like only the following with work properly: 1998 Mountaineer, 1997 - 2000 Ranger, 1997 Explorer

try rockauto.com, advancedauto com, autozone.com, most of them you can put your part number in and they will show you the part.

Do you know what voltage drop testing is ? Test the ground circuits as well as B+ side ! Does your manual have wiring diagrams an show connections an ground point's .? There are a number of body grounds hidden you can't see , door pillars , behind the dash , places in the engine compartment, trunk etc....
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Electric Testing Techniques You Need to Know
http://www.bbbind.com/free_tsb.html free wiring diagrams ! enter vehicle info . then under system click on what ever you want to check ! power windows in body & accessories etc...

You have 3.0 L engine listed , 1998 had a 4.0 or 5.0l engine !

The eighth vehicle identification number digit designates which engine you have. Can be found on driver's door or door pillar. Also found on the plate at the lower left hand corner of the windshield.

car-part.com
page with * is lowest price. They have interchange info.