2.5 V6 PROBLEM- IDLER PULLEY ON THE POWER STEERING BELT. CANNOT FIND PARTS ANYWHERE. WE LOVE OUR 2002 CHEVY TRACKER. THE MOST RELIABLE NICE BLAZER WE EVER OWNED. THANKS.

You can reuse it. But you need to find out why it was thrown off. Check all the pullies by grabbing them and checking for side to side movement, With the exception of the power steering pump pulley (which has some in and out play) they all should have no play. Just turn in nice smooth circles. Sorry I don't have the diagram, but there should be one under the hood. Sometimes on the bottom of the hood.

2002 with a/c, best I can do.




Item Part Number Description 1 10344 Generator pulley 2 8678 Belt idler pulley 3 8509 Water pump pulley 4 19D784 A/C clutch pulley 5 3A733 Power steering pump pulley 6 6B321 Crankshaft pulley 7 8678 Belt idler pulley 8 6B209 Drive belt tensioner 9 8620

REPLACE THE TENSIONER IDLER PULLEY.THE TENSIONER IDLER PULLEY MAINTAINS THE BELT TENSION WHEN IT GOES BAD.THAT WILL LEAD TO LOOSE BELT TENSION CAUSING BELT TO BREAK.

what engine? Please rate if it helps

3.L v6

Item Part Number Description 1 3A733 Power steering pump pulley 2 8620 Drive belt 3 2E884 A/C clutch pulley 4 6316 Crankshaft pulley 5 6B209 Drive belt tensioner 6 10344 Generator pulley


2.0L Zetec 4 cyl with A/C

Item Part Number Description 1 10344 Generator pulley 2 19A216 Belt idler pulley 3 3A733 Power steering pump pulley 4 6C301 Drive belt 5 2E884 A/C clutch pulley 6 6B320 Crankshaft pulley 7 8509 Water pump pulley 8 6A228 Drive belt tensioner

Hope this helps ya.. Cobra... :-)


Item Part Number Description 1 10344 Generator pulley 2 8620 Drive belt 3 8A528 Water pump pulley 4 3D673 Power steering pump pulley 5 63126 Crankshaft vibration damper 6 2E884 A/C clutch pulley 7 6B209 Drive belt tensioner 8 19A216 Belt idler pulley 9 19A216 Belt idler pulley

Try removeing the serpent belt ...take idler pulley...if it lose in any way ..before doing all this just listen to the front of it ...look care fully at idler ...if it looks kind of cocky in any way change it ...check your belt too ...and all fluid levels for power steering ect ....good luck

it might be something else is adjustable, look for other adjustable items, idler pulley, etc. 

The belt typically won't squeal when too tight, it will just put more wear and tear on the components. I would recommend removing the belt, and cleaning the pulley with brake parts cleaner and a tooth brush. There is probably some sort of residue on the pulley, which is allowing the belt to slip when the a/c clutch engages. If this doesn't help, make sure all of your pulleys are aligned. Use a long straight edge to check their alignment with each other. If they aren't close to perfectly straight, it will cause the belt to ride funny and squeal when the a/c clutch engages.

Removal & Installation

1.6L Engine
A/C Compressor Belt

1. Disconnect the negative battery cable.
2. Loosen the A/C compressor mounting bolts.
3. Pivot the A/C compressor towards the engine in order to relieve the tension on the belt.
4. Remove the A/C compressor drive belt from the pulleys.

To install:

1. Properly route and install the A/C compressor drive belt on the A/C compressor, the power steering (if equipped), and the crankshaft pulleys.
2. Adjust the A/C compressor drive belt to obtain 6-9 mm (0.24-0.35 in) deflection.
3. Tighten the A/C compressor mounting bolts to 13-20 f t. lbs. (18-28 Nm).
4. Connect the negative battery cable.

Alternator Belt

1. Disconnect the negative battery cable.
2. Remove the power steering pump and the A/C compressor drive belt.
3. Loosen the generator mounting bolts.
4. Pivot the generator towards the engine and remove the accessory drive belt.

To install:

1. Properly route and install the generator drive belt on the pulleys.
2. Adjust the alternator drive belt to obtain 6-8 mm (0.24-0.32 in) deflection for a used belt or 5-6 mm (0.20-0.24 in) deflection for a new belt.
3. Tighten the generator mounting bolts to 17 ft. lbs. (23 Nm).
4. Install the power steering and the A/C compressor drive belt.
5. Connect the negative battery cable.

Power Steering Pump Belt

1. Disconnect the negative battery cable.
2. Loosen the power steering pump mounting bolts.
3. Pivot the power steering pump towards the engine in order to relieve the tension on the belt.
4. Remove the power steering pump drive belt from the pulleys.

To install:

1. Properly route and install the power steering pump drive belt on the power steering pump and the crankshaft pulleys.
2. Adjust the power steering pump drive belt to obtain 6-9 mm (0.24-0.35 in) deflection.
3. Tighten the power steering pump mounting bolts to 22 ft. lbs. (30 Nm).
4. Connect the negative battery cable.

A year is not a good sign. The belt should not have come off in that span of time. I would make sure you do not have a worn out idler or tensioner pulley bearing before installing your new belt or reinstalling the original if it is not worn or damaged.

You will find one or two small pulleys involved with drive belt. One of the smaller pulleys will be an "idler" pulley and simply redirects the belt to a different accessory. The other small pulley is considered a "tensioner" pulley, it is spring loaded and keeps the correct tension on the accessory belt.
The tensioner pulley will have a "squared" hole in the bracket or a bolt through the center of the pulley. In either case you will use a wrench to pry the tensioner pulley arm in the direction that loosens the belt. Once tension is relieved, pull the belt off a pulley and remove the belt. You will reverse the process to install the new belt.
Good luck and let me know.
Regards,