* Mechanic's experience: A seasoned mechanic will likely be faster than someone less experienced.
* Specific engine: The 2.4L and 3.7L engines in the 2002 Liberty have different complexities.
* Accessibility: The condition of the vehicle and how easily the engine can be accessed will affect the time. Rust, seized bolts, or other mechanical issues can significantly add time.
* Shop versus DIY: A shop will likely have more specialized tools and may take longer due to overhead. A DIYer might take much longer, especially if encountering unexpected problems.
* Scope of work: Is it just an engine swap, or are other related components being replaced (e.g., timing belt, water pump, gaskets)? This greatly affects the total labor hours.
Estimates: While a precise number is impossible, you can expect a range of 15 to 30 labor hours for a professional shop. DIYers should realistically budget significantly more time, potentially double or triple the estimate.
Recommendation: Contact several reputable mechanics or auto repair shops in your area and get quotes. They'll be able to give you a much more accurate estimate based on their experience and a look at your vehicle. The quote should specify the exact labor hours included.
