Skip the auto shop - Our mechanics make house calls

Q: Engine Swap help.

asked by on

I'm thinking of buying a 06 AWD Pacifica limited, it has the 3.5l, and Im wondering how much work needs to be done to swap it for the 3.8l engine that came with the model year, any help would be VERY appreciated, thank you.

My car has 85000 miles.
My car has an automatic transmission.

A: Hi there. Though this would be possible but...

Hi there. Though this would be possible but it would be very expensive. The engine and transmission would fit fine, the issue is electrical. These cars have completely different electrical harnesses and modules. You would need to completely change the wiring harness and the computer modules and then have then programmed to work on your car. This is possible, it will just be time consuming and expensive. Also, finding a dealer or shop that will do the programming will be difficult. You may need to look around to find the right shop for this.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: The RPM's on my car are increasing more quickly than I am accelerating

Hi there. If the O/D light was blinking, then that typically means that the computer is seeing a transmission problem. It can be as simple as a speed sensor or as complicated as a serious internal transmission failure. This can...

Q: No bus

Hello and thank you for contacting YourMechanic. First check all of the fuses on the fuse box in the cab for any of them that could be blown out. Sometimes fuses can pop when hooking up a fully charged battery...

Q: Can I swap an XR6 to an XR8 Engine?

There are a variety of opinions out there, some of them encouraging since the XR6 and XR8 are variations of the Ford Falcon (Australia) product line. There are, however, enough differences (electronic controllers, transmission, front subframe and some suspension bits),...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...