Skip the auto shop - Our mechanics make house calls

Q: Performing an engine swap

asked by on

I have a 4.0L V6 engine in my 2001 Ford Explorer Sport. I was just wondering if I was able to exchange the motor in my 2001 Ford Explorer Sport for a 4.0L for a 1998 Ford Explorer 4x4. Are those engines compatible/interchangeable?

My car has 158384 miles.
My car has an automatic transmission.

A: This is probably a doable swap. To minimize...

This is probably a doable swap. To minimize possible conflicts, swap everything from the "donor" vehicle": engine (with wiring and ECM), transmission (and it’s TCM and wiring) between vehicles. The possible snag is the transmission - the ’01 came with a 5R55E transmission while the ’98 came with either the 5R55E or a 4R44E.

A problem here is likely putting the 4R44E behind a 5R55E controller if that’s your only option. Consult some of the Explorer owner forums to see if anyone else has made this swap. If you need any assistance, be sure to consult a professional mechanic, such as one from YourMechanic, who can make sure the vehicle is safe and in good working order.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Fires but stalls out

The stalling is probably due to a failing electrical component such as a relay, a sensor failure, or a large vacuum leak. A certified Mechanic from YourMechanic can perform an engine stalling diagnostic to identify the cause. Typically, the fault...

Q: Radiator not holding water

This is a common issue. Many of the radiators installed in vehicles are aluminum cores with plastic water tanks. There is a gasket that seals them together. Over time the gasket fails and water starts to leak from between the...

Q: Is the check Fuel Fill Inlet a major issue? And how much does it cost to fix it?

There is a manufacturer extended warranty free one time replacement for the fuel inlet pipe on your vehicle. The extended warranty is for up to 150,000 miles and 15 years. The coverage is under 13N01 and you should call the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.