* Transmission Type: There are different transmission types used in that year and engine. The number of bolts can vary depending on whether you have a 4R70W, 4R75W, or 5R55E transmission.
* Specific Model: Even within a transmission type, there can be variations in the number of bolts due to different sub-models and configurations.
* Access: Some bolts might be difficult or impossible to count without removing the transmission.
What you can do:
1. Consult a Repair Manual: A specific repair manual for your 1998 Ford Expedition would be the best source for this information.
2. Look at a Parts Diagram: Online parts catalogs (like those from AutoZone, Advance Auto Parts, or RockAuto) often provide detailed parts diagrams, including transmission bolts.
3. Contact a Mechanic: A trusted mechanic familiar with Ford Expeditions can easily tell you how many bolts to expect.
Important Note: Always use the correct number and type of bolts when reassembling your transmission. Using incorrect bolts can lead to leaks, damage, and safety issues.
