Drive Belt Diagram for 2001 Pontiac Sunfire?

The drive belt, accessory belt routing diagram for Pontiac sunfire:---

Adjustment

All engines use an automatic drive belt tensioner. No adjustment is necessary. If the tensioner is at Maximum travel, the belt is most likely stretched or the incorrect belt was installed.

Belt Tension Inspection

Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Drive Belt Routings

Fig. Serpentine drive belt routing with A/C-2.2L engine

Fig. Serpentine drive belt routing without A/C-2.2L engine

Fig. Serpentine drive belt routing-2.4L engine

Fig. Serpentine drive belt routing with A/C-GM 2.2L engine

Fig. Serpentine drive belt routing without A/C-GM 2.2L engine

Fig. Serpentine drive belt routing-GM 2.4L engine

Removal & Installation

1. Disconnect the negative battery cable.
   
   NOTE

   The proper belt routing is included in this section, however, it is a good idea to make a simple drawing of the belt routing of your engine for installation reference before removing the belt.
   
   
2. Rotate the drive belt tensioner to relieve the belt tension. The procedure is as follows:
   1. On the 2.2L engine, use a 15 mm drive tool or a special belt removal tool to rotate the tensioner clockwise.
   2. On the 2.4L engines, use a 13mm drive tool or a special belt removal tool to rotate the tensioner clockwise.
   3. While holding the tensioner back, remove the belt from around one pulley.
      
      
      

      

      Fig. The belt tensioner is released by rotating the tensioner pulley bolt in a CLOCKWISE direction-2.2L engine

      
      
      
      

      

      Fig. The belt routing for the vehicle you are working on can usually be found on a label attached to the underside of the hood

   
   
3. Remove the belt from around the remaining pulleys.
   
   
   

   

   Fig. Serpentine drive belt routing with A/C-2.2L engine

   
   
   
   

   

   Fig. Serpentine drive belt routing without A/C-2.2L engine

   
   
   
   

   

   Fig. Serpentine drive belt routing-2.4L engine

To install:

1. Position the belt around the pulleys in the proper routing with the exception of one pulley. It is easiest to keep the belt off of the easiest pulley to access. Hold the belt tight with your hands and using the proper tool for your engine, rotate the tensioner clockwise and place the belt around the final pulley.
2. Release the tensioner slowly until it sits firmly against the belt.
   
   NOTE

   If the tensioner does not touch the belt or the wear indicator marks are not within specification, the belt is routed incorrectly or the wrong belt has been installed.
   
   
3. Connect the negative battery cable.
4. Start the engine and ensure that the belt runs smoothly and no abnormal noises exist.

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Drive Belt Diagrams

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Timing Chain Cover, Chain, Sprockets, & Seal

Removal & Installation

2.2L (VIN 4) Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Remove or disconnect the following:
   
   
   Negative battery cable

   Accessory drive belt

   Drive belt tensioner
   
   
3. Install an engine support fixture.
4. Remove or disconnect the following:
   
   
   Engine mount assembly

   Alternator

   Power steering pump and move it aside with the lines attached

   Oil pan

   Crankshaft pulley/hub

   Front cover
   
   
5. Position the No. 1 piston at Top Dead Center (TDC) of the compression stroke so the camshaft and crankshaft sprockets timing marks are aligned.
6. Remove or disconnect the following:
   
   
   Timing chain tensioner

   Camshaft sprocket and chain as an assembly

   Crankshaft sprocket, using a puller
   
   

   

   

   Fig. Exploded view of the accessory drive belt tensioner mounting-2.2L (VIN4 ) engine

   
   
   

   

   

   Fig. Align the sprocket timing marks with the alignment tabs on the tensioner during timing chain installation-2.2L (VIN4 ) engine
   
   

To install:

1. Lubricate the timing chain with clean engine oil.
2. Install the crankshaft sprocket, press it onto the crankshaft.
3. Install the timing chain over the camshaft sprocket, then around the crankshaft sprocket. Be sure the marks on the 2 sprockets are in alignment. Lubricate the thrust surface with Molykote® or equivalent.
4. Install or connect the following:
   
   
   Camshaft sprocket. Torque the bolts to 96 ft. lbs. (130 Nm).
   
   
5. Compress the timing chain tensioner spring. Insert a cotter pin or a nail into the hole in the tensioner to retain the timing chain tensioner shoe.
   
   
   Chain tensioner. Torque the bolts to 18 ft. lbs. (24 Nm).
   
   
6. Remove the cotter pin or nail from the hole in the tensioner.
   
   
   Front cover with a new gasket. Torque the bolts to 97 inch lbs. (11 Nm).

   Crankshaft pulley/hub. Torque the pulley bolts to 37 ft. lbs. (50 Nm) and the hub bolt to 77 ft. lbs. (105 Nm).

   Oil pan with new gaskets. Torque the nuts and bolts to 89 inch lbs. (10 Nm).

   Power steering pump. Torque the bolts to 22 ft. lbs. (30 Nm).

   Alternator. Torque the bolts to 37 ft. lbs. (50 Nm).

   Engine mount assembly. Torque the bolts to 55 ft. lbs. (75 Nm).
   
   
7. Remove the engine support fixture.
8. Install or connect the following:
   
   
   Accessory drive belt tensioner. Torque the bolts to 37 ft. lbs. (50 Nm).

   Accessory drive belt

   Negative battery cable
   
   

2.2L (VIN F) Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Remove the valve cover.
3. Remove the engine front cover as follows:
   1. Remove the front wheel.
   2. Remove the engine splash shield.
   3. Remove the drive belt.
   4. Use crankshaft holding tool J 38122-A to prevent the crankshaft from rotating while loosening the crankshaft balancer bolt.
      
      
      

      

      Fig. Use crankshaft holding tool J 38122-A to prevent the crankshaft from rotating while loosening the crankshaft balancer bolt-2.2L (VIN F) engine

   5. Remove the crankshaft balancer bolt and discard. Remove the balancer.
   6. Remove the drive belt tensioner.
   7. Remove the water pump-to-front cover bolt.
      
      
      

      

      Fig. Remove the water pump-to-front cover bolt-2.2L (VIN F) engine

      
      
      
      

      

      Fig. Remove the front cover bolts and cover-2.2L (VIN F) engine

   8. Remaining front cover-to-engine bolts, the cover and gasket.

   
   
4. Rotate the engine until the crankshaft sprocket mark aligns with the second silver link (2) at the 5 o'clock position. Refer to the illustration.
   
   
   

   

   Fig. Rotate the engine until the crankshaft sprocket mark aligns with the second silver link (2) at the 5 o'clock position-2.2L (VIN F) engine

5. Make sure the INT diamond on the intake camshaft sprocket is aligned with the copper link at (1) at the 2 o'clock position. Refer to the illustration.
   
   
   

   

   Fig. Make sure the INT diamond on the intake camshaft sprocket is aligned with the copper link at (1) at the 2 o'clock position-2.2L (VIN F) engine

6. Make sure the EXH triangle on the exhaust camshaft sprocket is aligned with the silver link (3). Refer to the illustration.
   
   
   

   

   Fig. Make sure the EXH triangle on the exhaust camshaft sprocket is aligned with the silver link (3)-2.2L (VIN F) engine

7. Remove or disconnect the following:
   
   
   Timing chain tensioner

   Timing chain tensioner guide

   Fixed timing chain guide access plug

   Fixed timing chain guide

   Upper timing chain guide
   
   
8. Use a 24 mm wrench to hold the camshafts from turning.
   
   
   Exhaust camshaft sprocket bolt and discard

   Exhaust camshaft sprocket

   Intake camshaft sprocket bolt and discard

   Intake camshaft sprocket

   Timing chain through the top of the cylinder head
   
   

   

   

   Fig. Remove the intake camshaft sprocket, then the chain through the top of the head-2.2L (VIN F) engine

   Crankshaft sprocket

   Balance shaft drive chain tensioner

   Adjustable balance shaft chain guide

   Small balance shaft drive chain guide

   Upper balance shaft drive chain guide

   Balance shaft drive chain.
   
   

   

   

   Fig. Remove the upper balance shaft chain guide, then the chain-2.2L (VIN F) engine
   
   

To install:

1. Install or connect the following:
   
   
   Upper balance shaft chain guide and tighten to 89 inch lbs. (10 Nm)

   Small balance shaft chain guide and bolts and tighten to 89 inch lbs. (10 Nm)

   Adjustable balance shaft drive chain guide and bolts and tighten to 89 inch lbs. (10 Nm)
   
   
2. Turn the tensioner plunger 90 degrees in its bore and compress the plunger until a paper clip can be inserted through the hole in the plunger body and into hole in the tensioner plunger.
   
   
   Timing chain tensioner and bolts and tighten to 89 inch lbs. (10 Nm)
   
   
3. Remove the paper clip from the balance shaft drive chain tensioner.
4. Install the crankshaft sprocket with timing mark at the 5 o'clock position.
   
   
   

   

   Fig. Install the crankshaft sprocket with timing mark at the 5 o'clock position-2.2L (VIN F) engine

5. Lower the timing chain through the opening in the top of the cylinder head. Carefully ensure that the chain goes around both sides of the cylinder block bosses.
   
   
   

   

   Fig. Lower the timing chain through the opening in the top of the cylinder head. Carefully ensure that the chain goes around both sides of the cylinder block bosses (1 & 2)-2.2L (VIN F) engine

6. Install or connect the following:
   
   
   Intake camshaft sprocket with the INT diamond at the 2 o'clock position
   
   

   

   

   Fig. Install the intake camshaft sprocket with the INT diamond at the 2 o'clock position-2.2L (VIN F) engine
   
   
7. Hand tighten a NEW intake camshaft sprocket bolt.
8. Route the timing chain around the crankshaft sprocket with the second silver link aligning with the timing mark.
9. Route the timing chain around the intake camshaft sprocket with the copper colored link aligning with the INT diamond.
   
   
   Timing chain tensioner guide through the opening in the top of the cylinder head and tighten the bolts to 89 inch lbs. (10 Nm).

   Exhaust camshaft sprocket with the timing chain silver link at EXH triangle aligned at the 10 o'clock position.
   
   

   

   

   Fig. Install the exhaust camshaft sprocket with the timing chain silver link at EXH triangle aligned at the 10 o'clock position-2.2L (VIN F) engine
   
   
10. Use a 24 mm wrench to rotate the camshaft slightly, until exhaust sprocket aligns with the camshaft.
11. Hand tighten the NEW exhaust camshaft sprocket bolt.
12. Install the fixed timing chain guide and tighten the bolts to 89 inch lbs. (10 Nm).
13. Apply sealant, GM P/N 12345382 compound to thread and install the timing chain guide bolt access hole plug. Tighten the access hole plug to 30 ft. lbs. (40 Nm).
    
    
    Timing chain upper guide and bolts and tighten to 89 inch lbs. (10 Nm)
    
    
14. Measure the timing chain tensioner. In a fully compressed, non-active state, the tensioner will measure 2.83 in (72mm). A tensioner in the active state will measure 3.35 in (85mm). To put the tensioner in a non-active state, hold the flat end of the tensioner with a wrench and rotate the piston clockwise for slightly less than one full turn.
    
    
    Timing chain tensioner and tighten the tensioner to 55 ft. lbs. (75 Nm)
    
    
15. Use a suitable tool with a rubber tip on the end. Feed the tool down through the camshaft drive chant to rest on the timing chain. Then give a sharp jolt diagonally downwards to release the tensioner.
16. Use a 24 mm wrench to hold the camshaft and tighten the new bolts to 63 ft. lbs. (85 Nm) plus an additional 30 degrees.
17. Install the valve cover.
18. Install the engine front cover as follows:
    1. Install front cover gasket, cover and cover-to-engine bolts.
    2. Install the water pump-to-front cover bolts. Tighten all the cover bolts to 15 ft. lbs. (20 Nm).
    3. Install the drive belt tensioner and tighten the bolt to 33 ft. lbs. (45 Nm).
    4. Install the crankshaft balancer and bolt.
    5. Use crankshaft holding tool J 38122-A to prevent the crankshaft from rotating while tightening the crankshaft balancer bolt. Tighten the bolt to 74 ft. lbs. (100 Nm) plus an additional 75 degrees.
    6. Install the engine splash shield.
    7. Install the drive belt.
    8. Install the front wheel.

    
    
19. Connect negative battery cable.

2.4L Engine

NOTE

It is recommended that the entire procedure be reviewed before attempting to service the timing chain.

1. Before servicing the vehicle, refer to the precautions section.
2. Disconnect the negative battery cable.
3. Drain the cooling system.
4. Install an engine support.
5. Remove or disconnect the following:
   
   
   Coolant surge tank

   Accessory drive belt

   Upper fasteners from the front cover

   Right engine mount and bracket

   Right front wheel

   Splash shield from the right wheel well

   Crankshaft balancer

   Front cover
   
   
6. Rotate the crankshaft clockwise, as viewed from front of engine (normal rotation), until the camshaft sprocket's timing dowel pin holes align with the holes in the timing chain housing. The mark on the crankshaft sprocket should align with the mark on the cylinder block. The crankshaft sprocket keyway should point upwards and align with the center line of the cylinder bores. This is the normal timed position.
7. Remove or disconnect the following:
   
   NOTE

   Make sure that all of the slack in the timing chain is above the tensioner assembly.
   
   
   
   
   Timing chain guides
   
   

The timing chain must be disengaged from any wear grooves in the tensioner shoe in order to remove the shoe. Slide a screwdriver blade under the timing chain while pulling the shoe outward.

Tensioner assembly

1. Mark the crankshaft sprocket and the timing chain outer surface.
   
   
   Timing chain
   
   

To install:

1. Install the intake camshaft sprocket. Torque the bolt to 52 ft. lbs. (70 Nm).
   
   NOTE

   Install the Special tool J 36008-A through the holes in the camshaft sprockets and into the holes in the timing chain housing. This positions the camshafts for correct timing.
   
   
2. If the camshafts are out of position and must be rotated more than ¹ / ₈ turn in order to install the alignment dowel pins, perform the following:
   1. Rotate the crankshaft 90 degrees clockwise off Top Dead Center (TDC) in order to give the valves adequate clearance to open.
   2. Once the camshafts are in position and the dowels installed, rotate the crankshaft counterclockwise back to TDC.
      
      WARNING

      Do not rotate the crankshaft clockwise to TDC or valve and piston damage may occur.
      
      

   
   
3. Install the timing chain over the exhaust camshaft sprocket, around the coolant pump sprocket and around the crankshaft sprocket.
4. Remove the alignment dowel pin from the intake camshaft. Using tool J 39579, rotate the intake camshaft sprocket counterclockwise enough to slide the timing chain over the intake camshaft sprocket. Release the camshaft sprocket wrench. The length of chain between the 2 camshaft sprockets will tighten. If properly timed, the intake camshaft alignment dowel pin should slide in easily. If the dowel pin does not fully index, the camshafts are not timed correctly and the procedure must be repeated.
5. Leave the alignment dowel pins installed.
6. With slack removed from the chain between the intake camshaft sprocket and the crankshaft sprocket, the crankshaft keyway and the cylinder block mark should be aligned. If not aligned, move the chain 1 tooth forward or rearward. Remove the slack and recheck marks.
7. Reload timing chain tensioner assembly to its 0 position as follows:
   1. Insert the tensioner plunger assembly into the tensioner housing.
   2. With the tensioner plunger fully extended, turn the complete assembly upside down on a flat surface.
   3. Press the bottom of the tensioner housing to compress the plunger into the housing until it is seated.
   4. Make sure that the plunger does not extend out of the tensioner housing more than 0.07 in. (1.7mm).
   5. Loosely install the tensioner assembly to the timing chain housing.

   
   
8. Install or connect the following:
   
   WARNING

   If the timing chain tensioner plunger is not released from the installation position, engine damage will occur upon start up.
   
   
   
   
   Tensioner shoe on the stud.

   Tensioner assembly by applying hand pressure on the timing chain tensioner shoe until the locking tab seats in the stud groove. Tighten the bolts to 89 inch lbs. (10 Nm).
   
   
9. Release the tensioner plunger by firmly pressing a flat blade tool against the plunger face.
10. Remove tool J 36008-A from the camshaft sprockets.
    1. Rotate crankshaft clockwise 2 full rotations. Align crankshaft keyway with mark on cylinder block and reinstall alignment dowel pins. Alignment dowel pins will slide in easily if engine is timed correctly.

    
    
11. Install or connect the following:
    
    
    Timing chain guides

    New seal lubricated with engine oil

    Front cover using new gaskets. Tighten the nuts and bolts to 115 inch lbs. (13 Nm).

    Crankshaft balancer. Torque the bolt to 129 ft. lbs. (175 Nm) plus a 90 degree turn.

    Right front wheel well splash shield

    Wheel

    Right engine mount bracket. Torque the bolts to 44 ft. lbs. (60 Nm) plus an additional 60 degree turn.

    Right engine mount. Torque the bolts to 55 ft. lbs. (75 Nm).
    
    
12. Remove the engine support.
13. Install or connect the following:
    
    
    Accessory drive belt

    Coolant surge tank

    Negative battery cable
    
    
14. Refill the cooling system and check for leaks.