Skip the auto shop - Our mechanics make house calls

Q: Motor swap

asked by on

Can i put a 1999 jeep cherokee 4.0 motor in my 2000 jeep cherokee . I notice my 4.0 has a coil pack and the 1999 motor i want to put in it doesnt . Does that make a difference ?

My car has 203000 miles.
My car has an automatic transmission.

A: Yes, it will make a difference but it’s pos...

Yes, it will make a difference but it’s possible the older engine has a different type of ignition system and all of the components from the newer engine will need to be transferred to the older one.

There may be issues with the camshaft or crankshaft sensor locations on the two engines, so take note of that. Also, you should swap the engine harness and anything else that looks different. The best way to go about this is to set the engines next to each other, side by side, and swap all of the components that appear different.

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: Seriously unbearable seats are ruining my car

The 2014 Jeep Cherokee comes in four different models some of which have seat trim options. The options included power or manual seats, heated seats, and having them upholstered in leather or cloth. All the options can add different levels...

Q: stalling engine

Hello there. Usually this type of issue is caused simply by clogged or dirty fuel injectors or the throttle body being dirty. When an engine gets warm it is more dependent upon the efficient flow of vaporized gasoline. When the...

Q: 1999 Jeep Wrangler overheating at highway speeds

Hello. If this only occurs at highway speeds, then you may have pressure build up in the cooling system. This is typically caused by a leaking head gasket. If there is a slight leak, then combustion pressure will build up...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...