The radiator is responsible for maintaining your Jeep grand Cherokee"s engine cool. Replacing a faulty one or upgrading come a much better one is a way decision that will certainly ensure your engine stays cool and healthy.

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This article uses to the Jeep grand Cherokee WJ (1999-2004).

The radiator in her Jeep grand Cherokee is designed come cool down your engine by letting coolant circulation through it. Once you start the engine, the thermostat block the coolant from going into the engine, and also when it reaches its optimal temperature, the thermostat opens up and permits the coolant to go from the radiator to the engine in stimulate to keep it cool. If the radiator starts leaking, your auto will begin overheating. There are likewise aftermarket radiators that can take more wear than OEM ones, hence keeping your automobile cool under heavier driving conditions. Read on come learn exactly how to replace your own radiator.

Figure 1. The radiator is located in former of the engine.
Materials NeededWrench set5/32 Allen wrenchRatchet and also socket setContainerPliersNew radiator

Step 1 – Disconnect battery

Open your hood and disconnect the an adverse (black) battery terminal. Wrap the in a bath towel so the doesn"t touch any kind of metal and create a spark.

Figure 2. Disconnect the an unfavorable battery terminal.

Step 2 – drain radiator native coolant

Open the radiator"s cap situated on top of the radiator, and locate the drain plug top top the bottom of that by the passenger"s side. Place a container under the drain plug and remove that by turning counterclockwise. Allow the coolant drainpipe completely.

Figure 3. Eliminate plastic drainpipe plug.Figure 4. Drainpipe coolant.

Step 3 – eliminate the grill"s screws

Remover the peak screws hold the grill in location using your 5/32 Allen wrench. Even though this won"t allow the grill to totally come off, it will give you more room to pull the radiator out.

Figure 5. Remove the top grill screws.

Step 4 – remove hoses

Remove the upper and lower radiator hoses. They room connected and also held in place with a clamp that you just need to squeeze through pliers to on slide it in; climate pull the water tap out and away come remove. The top hose is linked on the top and the reduced hose is connected the very same way, just on the bottom.

Remove the transmission line connected to the radiator by removed the nuts through your 7/8 wrench.

Figure 6. Top radiator hose.Figure 7. Transmission line going right into radiator.

Step 5 – remove radiator

Remove the pan shroud by removed its mounting nuts and also the upper brace bolts, and the upper brace itself. Eliminate the condenser and hood latch bolts with the grill, and also finally eliminate the lower bracket bolts. Make sure there room no much more connections to the radiator; carefully and also with the assist of a friend, pull the radiator all the way out.

Figure 8. Nuts and also bolts diagram.

Step 6 – Install brand-new radiator

With the aid of a friend, reduced the new radiator in ar carefully. Be certain to either pull out the pan or push it the end of the way as the radiator lowers right into place.

Install the reduced bracket bolts.Install the condenser bolts.Install the hood latch bracket.Install the top brace and also its bolts.Install the fan shroud mounting bolts.Install the transmission lines.Install the upper and also lower radiator hoses.Install the grill screws.

Step 7 – Refill radiator v coolant

Fill the new radiator through 50/50 antifreeze combined with distilled water till the coolant is around 1/2 customs from the top. Reconnect the negative battery terminal, start the car and let it run for a few minutes. Check the coolant level again and also top off as needed. Usage a flashlight to examine for any type of visible leaks roughly the locations you functioned on. Examine all the hose relationships to certain you"ve tighten them properly. Store an eye top top the coolant level and any leaks for a couple of days come follow.

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Figure 9. Refill new radiator with coolant.

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