Engine replacement instructions please?

Tiny
ARTYBUMP12
  • MEMBER
  • 2004 JEEP GRAND CHEROKEE
  • 4.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 147,000 MILES
I need to swap engine for the first time and I need to know how?
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Friday, May 15th, 2020 AT 4:42 PM

12 Replies

Tiny
SEVAG P
  • MECHANIC
  • 405 POSTS
Hello,

check the diagrams below how to remove and reinstall procedure step by step.

After removing the engine its good to check the engine mounts condition, engine harness and its connectors if they are good and clean, check engine belts condition, alternator and the rollers with tensioners if they are smooth.

Hope these helps let us know if you need more help.

Thank you.
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Friday, February 5th, 2021 AT 12:27 PM
Tiny
CGH5
  • MEMBER
  • 5 POSTS
  • 2001 JEEP GRAND CHEROKEE
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 158,000 MILES
I recently had the engine replaced and after this was replaced all of these problems started. The auto shop that replaced the engine with a Marshall engine said that its nothing they did.

The Window controls on any door did not work and would only show the backlight on the switches but when you attempted to press a button to open the window or lock the doors it would make a noise and then the lights would turn off and eventually come back on (on the switch) Now they will not work at all Strange thing is the mirrors worked for passenger and driver side during the time that the lights would flash on and off on the switches for the door control. It no longer works after the lights no longer came on (on the door control module)

2) The cruse control had a very hard time working and I only got it to work once when I got the truck back. Not it does not work at all. When I turn the cruse control on it says on (on the dashboard) but will not work.

3) my vent selector thingy (sorry dont know the name) that controls if the air comes out of the vents, by your feet or the defrost does not work and no matter what you select it stays on the defrost option. I do not recall if it worked at all when I got the truck back but it worked before with no problems.

4) When got my truck back the front headlights were not working correctly and the left side was very dim and the right would work. When it put my high beams on the dim side would shine bright and the normally bright side would be off. I actually found that the passenger side connector to the headlight was loose and that fixed the issue.

I seem to believe that they forgot to hook things back up based on my experiencing. As I also have been having to add coolant to the system ever since getting it back (3 months ago) and I just noticed today that the radiator has a leak in the top and is cracked where the hose is connected. I assume that was my problem ever since and they must have cracked it putting it back in.

Any ideas maybe that they missed connecting something back together? Thank you in advance for your help!
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
First thing you should do is take it back to where the engine was installed and tell them to fix it correctly. That is shoddy work. If you want to see if you can fix some of these items yourself then for the heater problem it sounds like it's not getting vacuum so check to see if you have a vacuum line off underhood that leads into the truck. Once it's connected it should fix that part. Then check near the battery and see if there is a ground wire connected from battery to the body and engine. There should be both as well as a ground wire from engine to body, usually in the back of engine. That wire can be a 10 or 12 gauge in back of engine. Everything I've said here may fix all of your problem.S check the areas where I've pointed to for vacuum disconnected for heater.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
CGH5
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  • 5 POSTS
I will have to apologize that im not a mechanic but I am technical. The image I posted I assume the schematic (kinda of) image you provided is under the black plastic thing in the image?

I looked around and on the side of it and all of the connections look ok.

I do want to mention that the vehicle runs and moves. Its just all of those things that do not work. One other bit of information that I missed that may or may not make a difference is that when opening the front and passenger doors the internal lights do not come on. When I open the back doors (4 door vehicle) on the passenger and driver side light up the internet lights. I changed out the master control module on the drivers side door thinking it was the problem and its not. I looked at the wiring and it all looked good as well.

I looked at the ground from the battery to the engine and it looks good.

I would take it back to them but they said it has nothing to do with what they did and they would charge me and I have already paid around 5000 for the engine and labor.

Any ideas?
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
CGH5
  • MEMBER
  • 5 POSTS
Here are some other views. I can show you more if needed.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Look in the area of the third picture, there may be a small hose leading to the firewall see if it is connected. You also need to see if ground wires are connected to the body from battery. Otherwise if you know someone who is more familiar with cars then have them read what I've sent and look at it before you take it to a mechanic. I still think the problems are what I said and the place you took it to is responsible I kinda think they did shoddy work as a lot of that especially the heater as it's vacuum operated.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
CGH5
  • MEMBER
  • 5 POSTS
Ok, I will check that connection. The heater does work but its the selection as to what vent it goes out on. Ex. Defrost, vent, recycle. Etc. Stays on defrost no matter what you change it to. I realize that is part of the vacuum but wanted to mention.

I will get back to you. I am pulling out the radiator to replace it soon and will take advantage of that as well.

Thank you. Will be in touch.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
CGH5
  • MEMBER
  • 5 POSTS
I checked the vacuum connection under the front grill passenger side headlight at it was disconnected. I reconnected it and my cruze control and vents started working. I then took a cable and grounded the engine from a clean bolt to the frame but that did not fix my window issue. Any additional thoughts?
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuse 12 in your underhood fuse box for windows then check to see if power is going to switch andto motor. It may be the body module that is out.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
LISANCURTIS BRACKNELL
  • MEMBER
  • 1 POST
  • 1999 JEEP GRAND CHEROKEE
  • 4.0L
  • 2WD
  • AUTOMATIC
  • 198,000 MILES
I need to know if a 1996 4.0 Jeep Grand Cherokee engine will be compatible and fit a 1999 4.0 Jeep Grand Cherokee.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
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Good afternoon,

Yes, it will. The only thing you will have to do is to make sure all the externals from the donor motor are the same on yours. If they are not, then you need to remove the external parts from the donor motor and install the parts from your motor to the donor motor.

Roy
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Friday, February 5th, 2021 AT 12:30 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I posted the procedure for you below for the removal and installation.

You will need a lift, an engine hoist, a jack to support the transmission when you remove the motor. You will also need a good set of hand tools as well.

Roy

REMOVAL
1. Disconnect the battery negative cable.
2. Mark the hinge locations on the hood panel for alignment reference during installation. Remove the engine compartment lamp. Remove the hood.
3. Remove the radiator drain cock and radiator cap to drain the coolant. DO NOT waste usable coolant. If the solution is clean, drain the coolant into a clean container for reuse.

Fig. 29
imageOpen In New TabZoom/Print

4. Remove the upper radiator hose and coolant recovery hose.
5. Remove the lower radiator hose.
6. Remove upper radiator support retaining bolts and remove radiator support.
7. Remove the fan assembly from the water pump.
8. Remove the fan shroud.
9. Disconnect the transmission fluid cooler lines (automatic transmission).
10. Discharge the A/C system. (Refer to Heating and Air Conditioning)
11. Remove the service valves and cap the compressor ports.
12. Remove the radiator or radiator/condenser (if equipped with A/C).
13. Disconnect the heater hoses at the engine thermostat housing and water pump.

Fig. 30
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14. Disconnect the accelerator cable, transmission line pressure cable and speed control cable (if equipped) from the throttle body.
15. Remove cables from the bracket and secure out of the way.
16. Disconnect the body ground at the engine.
17. Disconnect the following connectors and secure their harness out of the way.
Power steering pressure switch
Coolant temperature sensor
Six 6 fuel injector connectors
Intake air temperature sensor
Throttle position sensor
Map sensor
Crankshaft position sensor
Oxygen sensor
Camshaft position sensor
18. Disconnect the coil rail electrical connections and the oil pressure switch connector.
19. Perform the fuel pressure release procedure. (Refer to Powertrain Management for correct procedure)
20. Disconnect the fuel supply line at the injector rail.
21. Remove the fuel line bracket from the intake manifold.

Fig. 31
imageOpen In New TabZoom/Print

22. Remove the air cleaner assembly.
23. Disconnect the hoses from the fittings at the steering gear.
24. Drain the pump reservoir.
25. Cap the fittings on the hoses and steering gear to prevent foreign objects from entering the system.
26. Raise and support the vehicle.
27. Disconnect the wires from the engine starter motor solenoid.
28. Remove the engine starter motor.
29. Disconnect the oxygen sensor from the exhaust pipe.
30. Disconnect the exhaust pipe from the manifold.
31. Remove the exhaust pipe support.
32. Remove the bending brace. Refer to Engine, Drive Belts, Mounts, Brackets and Accessories, Engine Mount for procedure.
33. Remove the engine flywheel/converter housing access cover.
34. Mark the converter and drive plate location.
35. Remove the converter-to-drive plate bolts.
36. Remove the upper engine flywheel/converter housing bolts and loosen the bottom bolts.
37. Remove the engine mount cushion-to-engine compartment bracket bolts.
38. Lower the vehicle.
39. Attach a lifting device to the engine.
40. Raise the engine off the front supports.
41. Place a support or floor jack under the converter (or engine flywheel) housing.
42. Remove the remaining converter (or engine flywheel) housing bolts.
43. Lift the engine out of the engine compartment.

INSTALLATION

CAUTION: When installing the engine into a vehicle equipped with an automatic transmission, be careful not to damage the trigger wheel on the engine flywheel.

1. Attach a lifting device to the engine and lower the engine into the engine compartment. For easier installation, it may be necessary to remove the engine mount bracket as an aid in alignment of the engine to the transmission.
2. Align the transmission torque converter housing with the engine.
3. Loosely install the converter housing lower bolts and install the next higher bolt and nut on each side.
4. Tighten all 4 bolts finger tight.
5. Install the engine mount brackets (if removed).
6. Lower the engine and engine mount brackets onto the engine compartment cushions. Install the bolts and finger tighten the nuts.
7. Remove the engine lifting device.
8. Raise and support the vehicle.
9. Install the remaining engine flywheel/converter housing bolts. Tighten all bolts to 38 Nm (28 ft. Lbs.) Torque.
10. Install the converter-to-drive plate bolts.
11. Ensure the installation reference marks are aligned.
12. Install the engine flywheel/converter housing access cover.
13. Install the exhaust pipe support and tighten the screw.
14. Install the engine bending brace.
15. Tighten the engine mount-to-bracket bolts.
16. Connect the vehicle speed sensor wire connections and tighten the screws.
17. Connect the exhaust pipe to the manifold.
18. Install the engine starter motor and connect the cable.
19. Connect the wires to the engine starter motor solenoid.
20. Lower the vehicle.
21. Connect all the vacuum hoses and wire connectors identified during engine removal.
22. Remove protective caps from the power steering hoses.
23. Connect the hoses to the fittings at the steering gear. Tighten the nut to 52 Nm (38 ft. Lbs.) Torque.
24. Fill the pump reservoir with fluid.
25. Inspect the fuel supply line O-ring(s) and replace if necessary. Connect fuel supply line to injector rail and verify connection by pulling outward on the line.
26. Install the fuel line bracket to the intake manifold.
27. Connect the coil rail electrical connectors and oil pressure switch connector.
28. Connect the following electrical connectors:
Power steering pressure switch
Coolant temperature sensor
Six 6 fuel injector connectors
Intake air temperature sensor
Throttle position sensor
Map sensor
Crankshaft position sensor
Oxygen sensor
Camshaft position sensor
29. Connect all previously removed vacuum hoses.
30. Connect the body ground strap.
31. Install the throttle, transmission line pressure, and speed control cables to their mounting bracket and connect them to the throttle body.
32. Connect the heater hoses at the engine thermostat housing and water pump.
33. Install the fan assembly to the water pump.
34. Place the fan shroud in position over the fan.
35. Install the radiator or radiator/condenser.
36. Connect the service valves to the A/C compressor ports, if equipped with A/C.
37. Charge the air conditioner system (refer to Heating and Air Conditioning).
38. Connect the radiator hoses and automatic transmission fluid cooler pipes, if equipped.
39. Install the fan shroud to the radiator or radiator/condenser (if equipped with A/C).
40. Install upper radiator support.
41. Connect the upper radiator hose and tighten the clamp.
42. Connect the lower radiator hose and tighten the clamp.
43. Fill crankcase with engine oil. (Refer to Maintenance for correct capacities.)
44. Fill the cooling system with reusable coolant or new coolant (refer to Cooling System).
45. Align the hood to the scribe marks. Install the hood.
46. Install the air cleaner assembly.
47. Install the battery and connect the battery cable.

Warning: use extreme caution when the engine is operating. Do not stand in a direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing.

48. Start the engine, inspect for leaks and correct the fluid levels, as necessary.
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Friday, February 5th, 2021 AT 12:30 PM (Merged)

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