99 Jeep Grand Cherokee Engine For Sale: A Comprehensive Buyer’s Guide

99 Jeep Grand Cherokee Engine For Sale: A Comprehensive Buyer’s Guide jeeps.truckstrend.com

The 1999 Jeep Grand Cherokee holds a special place in the hearts of many automotive enthusiasts. As the inaugural year for the WJ generation, it blended rugged capability with improved refinement, setting a new standard for the mid-size SUV. However, like any vehicle approaching a quarter-century mark, its engine might eventually reach the end of its life. Whether you’re dealing with a catastrophic failure, excessive oil consumption, or simply looking to breathe new life into a beloved classic, the search for a "99 Jeep Grand Cherokee Engine For Sale" is a common quest.

This comprehensive guide will navigate you through everything you need to know about finding, purchasing, and installing a replacement engine for your 1999 Jeep Grand Cherokee. We’ll cover the available engine types, where to look, what to consider, and provide practical advice to ensure a successful engine swap.

99 Jeep Grand Cherokee Engine For Sale: A Comprehensive Buyer’s Guide

Understanding the 1999 Jeep Grand Cherokee Engine Landscape

The 1999 model year was significant as it marked the transition from the ZJ to the all-new WJ platform for the Grand Cherokee. This means that if you own a 1999 model, it is almost certainly a WJ, and thus will have one of two primary engine options:

1. 4.0L I6 (PowerTech 4.0): This inline-six cylinder engine (engine code "ERH" or "P0") is legendary for its reliability, simplicity, and torque delivery. It’s a direct descendant of the AMC 4.0L engine and is renowned for its longevity, often exceeding 200,000 miles with proper maintenance. While not a powerhouse, it offers adequate performance for daily driving and off-road excursions. Common issues, while rare, can include exhaust manifold cracks, oil leaks from the rear main seal, and occasional head gasket failures on older, neglected units.

2. 4.7L V8 (PowerTech 4.7): Introduced specifically for the WJ, this overhead cam V8 (engine code "EVA" or "P1") offered a significant boost in horsepower and torque compared to the 4.0L. It provided a smoother, more refined driving experience, especially at higher speeds and when towing. While generally reliable, the 4.7L V8 can be more prone to issues like piston slap (a common, often harmless, noise), dropping valve seats (a more serious issue in early models), and cooling system vulnerabilities if not properly maintained.

   

It’s crucial to identify which engine your 1999 Grand Cherokee has. You can typically find this information on a sticker under the hood, in your owner’s manual, or by checking the 8th digit of your Vehicle Identification Number (VIN):

• S indicates the 4.0L I6
• N indicates the 4.7L V8

Why Buy a Replacement Engine? Common Scenarios

There are several compelling reasons why you might be searching for a "99 Jeep Grand Cherokee Engine For Sale":

• Catastrophic Failure: This is the most common reason. Issues like a thrown rod, cracked block, seized engine, or severe internal damage can render your current engine irreparable or uneconomical to fix.
• High Mileage and Wear: Even the most reliable engines eventually wear out. Excessive oil consumption, persistent misfires, low compression across cylinders, or a significant loss of power can indicate an engine nearing the end of its service life.
• Upgrade or Restoration: For enthusiasts, a fresh engine might be part of a larger restoration project, or even an upgrade from a tired 4.0L to a more powerful 4.7L (though this involves significant modifications beyond just the engine).
• Cost-Effectiveness: In many cases, replacing the engine is more cost-effective than buying a new vehicle, especially if the rest of your Grand Cherokee is in good condition.

Where to Find a 1999 Jeep Grand Cherokee Engine For Sale

The market for used and remanufactured engines is robust. Here are the primary avenues to explore:

• Salvage Yards/Auto Recyclers: These are excellent sources for used engines. Many yards specialize in specific makes or models. Online databases like Car-Part.com allow you to search inventories from hundreds of yards nationwide, often providing details like mileage and warranty.
• Specialized Engine Suppliers: Companies like Jasper Engines & Transmissions, ATK Engines, and many smaller, regional rebuilders specialize in remanufactured or rebuilt engines. These typically come with warranties and are built to strict specifications.
• Online Marketplaces: Websites like eBay, Craigslist, and Facebook Marketplace can yield good deals, especially from private sellers or smaller shops. However, exercise extreme caution due diligence when buying from these sources due to limited buyer protection.
• Jeep Forums and Enthusiast Groups: Online communities dedicated to Jeep Grand Cherokees (like JeepForum.com or NAXJA.org) often have "for sale" sections where members might be selling engines, or can provide leads on reputable suppliers.

Types of Replacement Engines: Used, Remanufactured, Rebuilt

Understanding the different types of replacement engines is crucial for making an informed decision:

1. Used Engines (Salvage/Junk Yard Engines):

   • Pros: Cheapest option, quickest availability.
   • Cons: Unknown history, no guarantee of internal condition, potential for hidden problems. Mileage can vary wildly.
   • What to Look For: Ask for a compression test, inspect for obvious damage, leaks, or signs of neglect. A reputable seller will often provide a short warranty (e.g., 30-90 days).

2. Remanufactured Engines:

   • Pros: Essentially "like new" performance and reliability. Components are replaced or machined to original factory specifications. Come with a comprehensive warranty (often 3 years/100,000 miles).
   • Cons: Most expensive option.
   • Process: The engine is completely disassembled, cleaned, inspected, and critical components (pistons, rings, bearings, valves, camshafts) are replaced. The block, crankshaft, and cylinder heads are machined to precise tolerances.

3. Rebuilt Engines:

   • Pros: A good middle ground between used and remanufactured. Often done by local machine shops, allowing for customization or specific upgrades.
   • Cons: Quality varies greatly depending on the rebuilder’s expertise and integrity. Warranties are typically shorter and less comprehensive than remanufactured units.
   • Process: Similar to remanufacturing, but the extent of replacement and machining can vary. Some parts might be reused if they meet certain specifications, rather than automatically replaced.

Key Considerations Before Purchasing

Before you commit to buying a "99 Jeep Grand Cherokee Engine For Sale," keep these vital points in mind:

• Compatibility: Double-check the engine code and ensure it matches your existing engine. While a 1999 WJ is fairly consistent, subtle variations in sensors or accessory mounts can occur between years or even early/late 1999 builds. Providing your VIN to the seller is always a good idea.
• Mileage and History (for Used Engines): Lower mileage is generally better, but service history is paramount. Ask for proof of mileage and if the donor vehicle was involved in a collision (which could cause hidden engine damage).
• Warranty: This is your strongest protection. For remanufactured engines, a multi-year, unlimited mileage warranty is standard. For used engines, a 30-90 day warranty is common and should be a minimum expectation. Understand what the warranty covers (parts only, or parts and labor?) and the return policy.
• Shipping Costs: Engines are heavy! Shipping can add hundreds of dollars to the total cost, especially for long distances. Factor this into your budget.
• Completeness: Will the engine come as a "long block" (block, cylinder head, oil pan, valve cover) or a "complete engine" (with intake manifold, throttle body, sensors, accessories like alternator, power steering pump, AC compressor)? A complete engine is easier for installation but might not be necessary if your accessories are good.
• Core Charge: Most engine suppliers will charge a "core charge" upfront. This is a refundable deposit that you get back when you return your old engine (the "core"). Ensure your old engine is in "returnable" condition (not disassembled, no holes in the block).
• Seller Reputation: Check online reviews, BBB ratings, and ask for references if possible. A reputable seller will be transparent and willing to answer all your questions.

Installation Process: DIY vs. Professional

Once you have your replacement engine, the next step is installation.

• DIY Installation:

  • Pros: Saves on labor costs. Offers a deep understanding of your vehicle.
  • Cons: Requires significant mechanical skill, specialized tools (engine hoist, stand), and a dedicated workspace. It’s a time-consuming and physically demanding job. Mistakes can be costly or dangerous.
  • Tips: Invest in a good service manual (e.g., Haynes or Chilton). Label all wires and hoses. Take photos during disassembly. Replace all gaskets, seals, and fluids.

• Professional Installation:

  • Pros: Expertise and specialized tools ensure a proper installation. Shops often offer a warranty on their labor. Faster turnaround time.
  • Cons: Significant labor costs (can range from $1,000 to $2,500+ depending on the shop and location).
  • Tips: Get multiple quotes. Choose a shop with experience in Jeep vehicles. Discuss the warranty on their labor and what ancillary parts they will replace (e.g., spark plugs, belts, hoses, fluids).

Post-Installation Care and Break-in

• Initial Startup: Follow the remanufacturer’s break-in procedure precisely if applicable. Ensure all fluids are at proper levels before starting. Check for leaks immediately.
• Break-in Period: For rebuilt or remanufactured engines, a break-in period (typically 500-1000 miles) is crucial. Avoid hard acceleration, heavy towing, or prolonged high RPMs. Change the oil and filter after the break-in period to remove any manufacturing debris.
• Ongoing Maintenance: Stick to your Grand Cherokee’s recommended maintenance schedule. Regular oil changes, fluid checks, and addressing minor issues promptly will extend the life of your "new" engine.

Estimated Price Table: 99 Jeep Grand Cherokee Engine For Sale

Please note: These prices are estimates and can vary significantly based on mileage, condition, seller, location, and market demand. Always get a direct quote.

Engine Type	Condition	Estimated Price Range (USD)	Key Features/Notes
4.0L I6	Used	$800 – $1,500	Mileage typically 80k-150k. Limited warranty (30-90 days). Inspect thoroughly. Often long block.
	Rebuilt	$1,800 – $2,800	Varies by rebuilder. Better quality than used, but warranty varies. Often long block.
	Remanufactured	$2,500 – $3,500+	Like-new condition, comprehensive warranty (3yr/100k+ miles common). Typically long block. Core charge applies.
4.7L V8	Used	$1,000 – $2,000	Mileage typically 80k-150k. Limited warranty (30-90 days). Inspect thoroughly. Often long block.
	Rebuilt	$2,200 – $3,500	Varies by rebuilder. Better quality than used, but warranty varies. Often long block.
	Remanufactured	$3,000 – $4,500+	Like-new condition, comprehensive warranty (3yr/100k+ miles common). Typically long block. Core charge applies.

Note: Prices generally do not include shipping, core charges, or installation labor.

Frequently Asked Questions (FAQ)

Q1: What’s the main difference between the 4.0L and 4.7L engines for a ’99 Grand Cherokee?
A1: The 4.0L is an inline-six known for its rugged reliability and simplicity. The 4.7L is a more powerful V8 that offers better acceleration and towing capacity, but is also more complex and potentially more expensive to maintain.

Q2: Can I put a ZJ engine (like a 5.2L or 5.9L V8) into my 1999 WJ Grand Cherokee?
A2: No, not easily. The 1999 Grand Cherokee (WJ) is a completely different platform from the ZJ. The engine mounts, transmission bolt patterns, wiring harnesses, and ECU programming are all different. Swapping a ZJ engine into a WJ would require extensive custom fabrication, wiring, and computer work, making it highly impractical and expensive. Stick to the original 4.0L or 4.7L.

Q3: How much does it cost to install a replacement engine?
A3: Professional installation costs typically range from $1,000 to $2,500 or more, depending on the shop’s labor rate, the complexity of the specific engine (V8 generally takes longer), and what additional parts (fluids, gaskets, hoses, etc.) are replaced during the process.

Q4: What is a "core charge" and why do I pay it?
A4: A core charge is a refundable deposit paid when you purchase a remanufactured or sometimes a used engine. It incentivizes you to return your old, "core" engine to the supplier. This allows them to rebuild or remanufacture it for future sales, promoting recycling and reducing waste. Once your old engine is returned and deemed rebuildable, the core charge is refunded to you.

Q5: How long do these replacement engines typically last?
A5: A properly installed remanufactured engine can last as long as a new factory engine, often 150,000 to 200,000+ miles with good maintenance. Rebuilt engines’ longevity depends on the quality of the rebuild. Used engines are a gamble, but a good low-mileage unit could offer many years of service.

Q6: Should I buy a used engine with high mileage to save money?
A6: It’s generally not recommended for a long-term solution. While cheaper upfront, a high-mileage used engine carries a higher risk of needing repairs sooner. If budget is extremely tight, ensure it comes with a warranty and get a compression test done. For peace of mind and long-term value, a remanufactured or reputable rebuilt engine is usually the better investment.

Conclusion

Finding a "99 Jeep Grand Cherokee Engine For Sale" can seem daunting, but with the right knowledge and a clear understanding of your options, you can make an informed decision that breathes new life into your vehicle. Whether you opt for the legendary reliability of the 4.0L I6 or the added power of the 4.7L V8, choosing between a used, rebuilt, or remanufactured unit will largely depend on your budget, risk tolerance, and long-term goals for your Grand Cherokee.

By carefully considering engine compatibility, scrutinizing seller reputations, understanding warranty terms, and planning for installation, you can successfully replace your engine and continue to enjoy the distinctive blend of capability and comfort that your 1999 Jeep Grand Cherokee offers for many years to come. Your classic WJ deserves a strong heart, and with diligence, you can provide it.