Trying to remove the oil pan of 2006 Civic EX to weld a hole caused by debris. All bolts out except near oil filter/AC compressor mount. Now I'm stuck, can't figure out how to remove those and get to last couple of pan bolts.Assuming I need to get tension off of serpentine and maybe loosen AC compressor...but stumped at the moment. Boy would I love a diagram or two!

Usually the engine is lifted to remove the pan, there's a fixture made specifically for that purpose.

the ac compressor bolts to the side of the pan and the trans bracket near the pass side of the trans

Check this Oil Pan Removal & Installation...

2.0L & 2.2L Engines

1. Before servicing the vehicle, refer to the Precautions Section.
   
2. Raise and support the vehicle.
   
3. Drain the engine oil.
   
4. Remove the engine drive belt.
   
5. On the 2.0L engine, remove the intercooler pump bracket bolts from the oil pan.
   
6. Remove the lower A/C compressor bolt from the oil pan.
   
7. Remove the oil pan bolts.
   
8. Remove the oil pan.

To install:

1. Make sure that the oil pan and mounting surface on the lower crankcase are free of all oil and debris.
   

Fig. Apply a 2mm bead of GM P/N 123785251 (Canadian P/N 88901148) around the perimeter of the oil pan and the oil suction port opening-2.0L, 2.2L, & 2.4L engines

1. Apply a 2 mm bead of GM P/N 123785251 (Canadian P/N 88901148) around the perimeter of the oil pan and the oil suction port opening. Do not over apply the RTV. More than a 2 mm bead is not required.
   
2. Install the oil pan.
   
   

Fig. Oil pan bolt torque sequence-2.0L, 2.2L, & 2.4L engines

1. Install the oil pan bolts in sequence. Tighten the oil pan bolts to 18 ft. lbs. (25 Nm).
   
2. Install the A/C compressor bolts. Tighten the bolts to 18 ft. lbs. (25 Nm).
   
3. On the 2.0L engine, install the intercooler pump bracket bolts. Tighten the bolts to 18 ft. lbs. (25 Nm).
   
4. Install the engine drive belt.
   
5. Lower the vehicle.
   
6. Fill the engine oil to the proper level.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

procedure is pasted below. Yes, you have to take the compressor loose if you have the 2.4 liter engine. You should never have to remove the flywheel to get the pan off, but you do have to pull the cover off the flywheel. Please let me know if you have any questions, and thanks for using FixYa.

REMOVAL & INSTALLATION

2.2L Engine
See Figure 1

1. Disconnect the negative battery cable.
2. Drain the crankcase. Raise and support the front of the vehicle.
3. Unfasten the exhaust shield and disconnect the exhaust pipe at the manifold.
4. Remove the starter motor and position it out of the way.
5. Remove the flywheel cover.
6. On care equipped with automatic transaxle, remove the oil filter and extension.
7. Unfasten the oil pan bolts and remove the oil pan.

Fig. Fig. 1: Oil pan installation-1995 2.2L OHV engine shown

To install:

1. Prior to oil pan installation, check that the sealing surfaces on the pan, cylinder block and front cover are clean and free of oil. If installing the old pan, be sure that all old RTV hae been removed.
2. Apply a 1 / 8 in. (3mm) bead of RTV sealant to the oil pan sealing surface. Use a new oil pan rear seal and apply a thin coat of RTV sealant to the ends of the gasket down to the ears and install the pan in place.
3. Tighten the oil pan retaining bolts to 89 inch lbs. (10 Nm).
4. On care equipped with an automatic transaxle, replace the oil filter adapter seal and replace the oil filter adapter.
5. Install the remaining components in the reverse order of removal.

2.3L and 2.4L Engines
See Figures 2 and 3

1. Disconnect the negative battery cable. Raise and safely support the vehicle.
2. Properly drain the engine oil and the cooling system into suitable containers.
3. Remove the flywheel housing or transaxle converter cover, as applicable.
4. Remove the right front wheel and tire assembly, then remove the right splash shield.
5. Remove the serpentine drive belt.
6. Unfasten the A/C compressor lower retaining bolts.
7. Remove the transaxle-to-engine brace.
8. Disconnect the engine mount strut bracket.
9. Unfasten the radiator outlet pipe bolts, then remove the pipes from the oil pan.
10. Remove the exhaust manifold brace.
11. Unfasten the oil pan-to-flywheel cover bolt and nut.
12. Remove the flywheel cover stud for clearance.
13. Disconnect the radiator outlet pipe from the lower radiator hose and oil pan.
14. Detach the oil level sensor connector.
15. Unfasten the oil pan retaining bolts, then remove the pan and gasket. Inspect the gasket for damage. If it'e O.K. you can reuse it. No sealer is necessary.

Fig. Fig. 2: After removing the oil pan, inspect the gasket. If it's not damaged you can reuse it

To install:

1. Position the gasket, then install the oil pan. Loosely install the retaining bolts.
2. Place the spacer in its approximate installed location by allow clearance to tighten the pan bolt directly above the spacer. Tighten the oil pan bolts to the specifications given in the accompanying figure.

Fig. Fig. 3: Oil pan tightening specifications-2.3L and 2.4L engines

1. Position the spacer into its proper position, then install the stud.
2. Fasten the oil pan-to-transaxle nut.
3. Attach the oil level sensor connector.
4. Connect the radiator outlet pipe to the oil pan and fasten with the retaining bolts.
5. Install the engine mount strut bracket.
6. Fasten the transaxle-to-engine brace.
7. Secure the A/C compressor bolts.
8. Install the serpentine drive belt.
9. Fasten the right splash shield, then install the wheel and tire assembly.
10. Install the flywheel housing or transaxle converter cover.
11. Fill the cooling system and engine crankcase with the correct type of fluids.
12. Connect the negative battery cable.

Did you remove the catalytic converter, and motor mount? Lots of stuff has to come off to get this pan out. :o(

3.8L Engine

1. Drain the engine oil.
2. Remove or disconnect the following:
   
   Negative battery cable Throttle body air inlet duct Engine mount struts Accessory drive belt
   
3. Install an engine support fixture.
   
   Catalytic converter from the right exhaust manifold Right front wheel Right side splash shield Oil filter and discard A/C compressor bracket and reposition the compressor Power steering oil cooler pipe brackets from the frame Engine mount bracket bolts Lower engine mount nuts Torque converter cover Oil level sensor electrical connector Oil level sensor
   
4. Raise the vehicle and place a support under the frame.
   
   Right side frame bolts and loosen the left side bolts Engine mount and bracket Oil pan

2.7L Engine

1. Disconnect negative cable from remote jumper terminal.
2. Drain cooling system.
3. Raise and safely support the vehicle.
4. Remove the right front wheel and belt splash shield.
5. Remove the accessory drive belts.
6. Remove the lower alternator mounting bolt.
7. Lower vehicle.
8. Disconnect alternator electrical connectors.
9. Disconnect AC clutch and AC pressure sensor electrical connectors. Reposition wiring harness.
10. Remove the oil dipstick and tube. Plug hole in oil pan where dipstick tube mounts with water tight stopper.
    NOTE If hole for dipstick tube in oil pan is not plugged, coolant will enter oil pan. Serious engine damage can occur.
11. Remove the remaining alternator mounting bolts. Remove alternator.
12. Disconnect hoses at thermostat housing.
13. Remove the thermostat housing bolts.
14. Remove the thermostat and housing.

Fig. Air bleed valve (1) and thermostat housing (2) 2.7L-engine


Hope helps (remember rated and comment this).

e
Cavalier, Sunfire 2001-2005

Oil Pan - Removal & Installation

2.2L (VIN 4) Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   Negative battery cable Right front wheel Right inner fender splash shield Starter motor and bracket Engine mount strut bracket Oil pan

To install:




Fig. Exploded view of the oil pan mounting and related components-2.2L (VIN 4) engine

1. Place a 2mm bead of RTV sealer to the oil pan sealing surface except at the rear seal mounting surface. Using a new oil pan rear seal, apply a thin coat of RTV sealer on the end down to the ears.
2. Install or connect the following:
   Oil pan with a new gasket. Torque the nuts and bolts to 89 inch lbs. (10 Nm). Engine mount strut bracket. Torque the bolts to 49 ft. lbs. (66 Nm). Starter motor and bracket. Torque the bolts to 37 ft. lbs. (50 Nm). Right fender splash shield Right front wheel. Torque the nuts to 100 ft. lbs. (140 Nm). Negative battery cable
3. Refill the crankcase.
4. Start the vehicle and verify no leaks.

2.2L (VIN F) Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   Engine mount strut bracket Drive belt Lower then upper AC compressor bolts Oil pan bolts Oil pan
   
   
   
   Fig. Remove/Install the oil pan bolts in this sequence-2.2L (VIN F) engine
   

To install:

1. Apply a 2 mm bead of RTV sealant around the perimeter of the oil pan and the oil suction port opening. Do not over apply the RTV. More than a 2 mm bead is not required.
2. Install or connect the following:
   Oil pan and tighten the bolts to 18 ft. lbs. (25 Nm) AC compressor bolts Engine mount bracket Drive belt
   
3. Refill the crankcase.
4. Start the vehicle and verify no leaks.

2.4L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Drain the cooling system.
4. Remove or disconnect the following:
   Negative battery cable Flywheel/converter cover Right wheel Right wheel well splash shield Accessory drive belt Air conditioning compressor lower bolts Transmission-to-engine brace Engine mount strut bracket Radiator outlet pipe bolts Radiator outlet pipe from the oil pan Oil pan to the flywheel cover bolt and nut Flywheel cover stud for clearance Radiator outlet pipe from the lower radiator hose and oil pan Oil level sensor connector Oil pan

To install:

1. Inspect the oil pan gasket; it is reusable if not damaged.
2. Install or connect the following:
   Oil pan with the gasket. Torque the M8 bolts to 18 ft. lbs. (24 Nm) and the M6 bolts to 106 inch lbs. (12 Nm).
   
   
   
   Fig. Oil pan fastener torque specifications-2.4L engine
   Oil pan to the transmission nut Oil level sensor connector Radiator outlet pipe to the lower radiator hose and oil pan Exhaust manifold brace Radiator outlet pipe. Torque the bolts to 124 inch lbs. (14 Nm). Engine mount strut bracket. Torque the bolts to 55 ft. lbs. (75 Nm). Transmission to the engine brace Air conditioning compressor lower bolts. Torque the bolts to 37 ft. lbs. (50 Nm). Accessory drive belt Right splash shield Right front wheel Flywheel/converter cover Negative battery cable
3. Refill the crankcase.
4. Refill the cooling system.
5. Start the vehicle and verify no leaks.

Hope helped (remember rated this help). Good luck.

2.2L Engines

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Accessory drive belt Lower A/C compressor mounting bolt Oil pan mounting bolts Oil pan

1. Lower A/C compressor mounting bolt. Tighten the bolt to 37 ft. lbs. (50 Nm).
4. Accessory drive belt
7. Negative battery cable
9. 
   
12. Fill the engine with oil to the correct level.
14. 
    

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Accessory drive belt Lower A/C compressor mounting bolt Oil pan mounting bolts Oil pan
   

To install:

1. Apply a 0.13 inch (3.5mm) bead of the GM P/N 12378521 sealant around the perimeter of the oil pan and oil suction port opening.
2. Install or connect the following:
   
   Oil pan. Tighten the bolts in sequence to 18 ft. lbs. (25 Nm).
   
   Fig. Oil pan bolt sequence-2.2L engine
   Lower A/C compressor mounting bolt. Tighten the bolt to 37 ft. lbs. (50 Nm). Accessory drive belt Negative battery cable
   
3. Fill the engine with oil to the correct level.

3.1L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Evacuate and recover the A/C system.
3. Drain the engine oil.
4. Remove or disconnect the following:
   WARNING DO NOT disconnect the refrigerant lines or allow the compressor to hang unsupported.
   
   
   Negative battery cable Accessory drive belt Upper and lower radiator hoses Right front wheel Inner fender splash shield Antilock Brake System (ABS) Wheel Speed Sensor (WSS) electrical connector Right front ball joint from the steering knuckle Right side outer tie rod end A/C compressor bolts and move the compressor aside
   
   
   Evaporator-to-accumulator A/C line Flywheel cover Engine cradle bolts Crankshaft balancer Starter motor Oil pan
   

To install:

Fig. Exploded view of the oil pan mounting-3.1L and 3.5L engines

1. Install or connect the following:
   

4.0L Engine To Remove:

1. Disconnect negative battery cable.
2. Lift the vehicle.
3. Drain the engine oil.
4. Remove or disconnect the following:
   • Exhaust pipe from exhaust manifold.
   • Exhaust hanger at the catalytic converter and lower the pipe.
   • Starter motor.
   • Flywheel/torque converter housing access cover.
   • Oil level sensor (if equipped).
5. Place a pole jack under vibration dampener with a piece of wood between dampener and jack.
6. Remove or disconnect the following:
   • Engine mount through bolts and raise engine for clearance to remove pan.
   • Transmission cooler lines (if equipped).
   • Oxygen sensor harness from oil pan mounting studs.
   • Oil pan bolts and studs.
   • Oil pan and gasket.

To Install:

1. Clean the gasket mating surfaces.
2. Apply Mopar® Silicone Adhesive Sealant or equivalent onto the cylinder block in four location as shown.

1. Attach the pan gasket to the oil pan with Hi-tack or equivalent (2003-2005 vheicles).
2. Use 1 ½ x ¼ inch bolts to fabricate alignment dowels. Cut off the head of the bolts and cut a slot into the top of the dowels (2006 vehicles).

1. Install two dowels into the timing case cover (2006 vehicles).
2. Install two dowels into the cylinder block (2006 vehicles).
3. Place the gasket over the dowels and onto the cylinder block and timing case cover (2006 vehicles).
4. Position the oil pan.
5. Install the 1/4 inch oil pan bolts. Tighten to 84 in-lb (9.5 Nm).
6. Install the 5/16 inch oil pan bolts. Tighten to 132 in-lb (15 Nm).
7. Remove the dowels.
8. Install the remaining 1/4 inch oil pan bolts. Tighten to 84 in-lb (9.5 Nm) (2006 vehicles).
9. Lower the engine onto the engine mounts.
10. Install the through bolts and tighten the nuts.
11. Remove jack stand and remove the piece of wood.
12. Install the flywheel and torque converter access cover.
13. Install starter motor.
14. Connect the exhaust pipe to the hanger and to exhaust manifold.
15. Install the transmission oil cooling lines (if equipped).
16. Install the oxygen sensor wiring supports to the oil pan mounting studs.
17. Install the drain plug into the oil pan. Tighten to 25 ft-lb (34 Nm).
18. Lower the vehicle.
19. Connect negative battery cable.
20. Fill the oil pan with oil. 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.
    
21. Start the engine and inspect for leaks.

put car on stands

remove right side engine splash shield

remove exhaust shield

remove AC brace at starter/ compressor bracket

remove flywheel inspection plate

remove engine mount strut, remove bolts from bracket. Lower the bracket slightly to gain clearance to remove pan.

remove oil filter extension (auto trans. only)

remove all pan bolts

tap pan with rubber hammer to break old gasket loose from block.

clean all used gasket off and install is reverse