Question about 2004 Ford Freestar

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Belt is seizing causing van to stall changed belt and tension idler in summer could it be the air conditioning unit

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Start your engine and open the hood. inpect every place that the belt runs through, the pulley that doesn't turn is where the problem is. to make sure, pour some water on it, after you stopped the engine, and if smoke comes out, correct the problem

Posted on Jan 03, 2011

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1995 nissan maxima alternator replacement


1995-98 Models
  1. Disconnect the negative battery terminal.
  2. Remove the splash guard on the right side of the vehicle.
  3. Loosen the alternator belt idler pulley.
  4. Slip the drive belt off the alternator pulley.
  5. Remove the four air conditioning compressor mounting bolts.
  6. Remove the radiator fan and fan shroud.
  7. Move the air conditioning compressor forward.
  8. Disconnect the alternator harness connector.
  9. Remove the alternator mounting bolts, and lower the alternator from the vehicle.
To install:
  1. Hold the alternator in place and install the mounting bolts.
  2. Plug in the alternator harness connector.
  3. Move the air conditioning compressor back into location.
  4. Install the radiator cooling fan and shroud.
  5. Install the air conditioning compressor mounting bolts.
  6. Place the drive belt on the alternator pulley.
  7. Tighten the drive belt to the proper tension with the idler pulley.
  8. Install the splash guard.
  9. Connect the negative battery terminal.
Proper belt tension is important. A belt that is too tight may cause alternator bearing failure; one that is too loose will cause a gradual battery discharge and/or belt slippage, resulting in belt breakage from overheating.

May 31, 2016 | 1995 Nissan Maxima

2 Answers

What would cause my belt to not spib & squeal realy loud on my 93 Ford mercury topez


If the belt is not turning, there will be a seized pulley. Possible alternator.. power steering.... water pump... tensioner.... idler pulley ... AC compressor seized. The belt will need to be removed and all the pulleys spun by hand to isolate tone that may be seized

Mar 07, 2016 | Ford Cars & Trucks

1 Answer

My car is squealing and starting to have the battery light popping on


Check the condition and tension of the drive belt as it appears that it is slipping. Check that the other units including idler pulleys are not seizing up in the bearings.

Jan 26, 2014 | 1999 Oldsmobile Cutlass

1 Answer

Air con cool for a few days then won't get cool, stop and restart all good


Cars for years have been using a serpentine belt. The compressor only works if the belt is spinning. With the engine running check to make sure the belt is spinning consistently. The alternator or the water pump could be seizing up causing the belt to stop. Check your idler as well. Tension on the belt could be loose and again not turning everything.

Jan 11, 2014 | Cars & Trucks

1 Answer

Fan belt diagram


1989 Belts

Print


INSPECTION

All Models
Belt tension is very important, as a belt that is too tight will put too much stress on the bearings of the components it drives, causing them to wear out prematurely. A belt that is too loose will slip, causing (1) the belt to wear out quickly due to friction heat, and (2) inefficient alternator, air pump, cooling fan or air conditioner operation because much of the turning power supplied by the main drive pulley is lost.
The belts should be inspected and/or adjusted at 2,000 miles (3,221 km) and then every 4,000 miles (6,441 km). First, make sure that the belt is properly positioned in the pulley. Check the pulleys for damage. Inspect the belts for cracks and signs of fraying. These usually develop on the inner surface and extend into the backing or outer surface of the belt. Check also for glazing, a completely smooth appearance which indicates slippage. A belt that is in good shape will have a slightly grainy appearance like cloth. Replace belts that show cracks or glazing.
Check belt tension. Apply pressure with your thumb at the mid-point between two pulleys, and the belt should stretch or deflect about 1 / 4 - 1 / 2 in. (6-13mm). If the belt is too tight or too loose, adjust/replace as necessary.


ADJUSTING

Except RX-7
See Figures 1, 2 and 3
To adjust belts, first locate the mounting bolt on the air pump or alternator (each has its own belt and adjusts to permit that belt to be tensioned correctly). This bolt attaches the unit to the engine and has a nut on the end. Put a wrench on either end and loosen the bolt until there is practically no tension on it. Then, loosen the adjusting bolt, which is located on the opposite side of the unit and which passes through a slot. Pull the alternator or air pump away from the engine and tighten the adjusting bolt just enough to hold the unit while you check tension. Repeat the adjustment procedure until the belt deflects the proper amount, then fully tighten the adjusting and mounting bolts. Avoid too much belt tension or overtightening of bolts. A new belt should be tensioned just slightly more (about 0.4 in. or 10mm deflection) and checked after several hundred miles of operation to make sure that tension is still adequate. (Tension is lost very rapidly until a new belt is broken in.)


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Fig. Fig. 1: Some engines utilize an idler pulley with a locknut at its center


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Fig. Fig. 2: After loosening the idler adjuster locknut, turn the adjusting bolt clockwise to increase belt tension or counterclockwise to decrease it


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Fig. Fig. 3: On some GLC engines equipped with power steering, the pump pulley uses a slotted adjusting bar, adjusting bolt and locknut to adjust belt tension
Late model GLCs, 323s, 626s, MX-6s and 929s may use an adjusting bolt on either the idler pulley (a pulley which is not directly associated with any of the accessories) or on the power steering pump itself. This bolt makes adjustment much easier because you don't have to hold the accessory under a great deal of tension while tightening the mounting bolts.
On models where the idler pulley has a locknut at its center, simply loosen the locknut, then turn the adjusting bolt clockwise to increase belt tension or counterclockwise to decrease it or remove the belt. Do not forget to retighten the locknut when tension is correct, or vibration may cause it to fall off. Recheck the tension with the locknut tightened and readjust if necessary.
To adjust the power steering pump pulley on the GLC, loosen the slotted adjusting bar bolt, the mounting bolt across from it, and the locknut at the bottom of the adjusting bolt. Turn the adjusting bolt counterclockwise to remove the belt or reduce tension, and clockwise to increase it. When tension is correct, tighten the adjusting bolt locknut, adjusting bar bolt, and pump mounting bolt.
On 626, MX-6 and 929 models with a 4-ridge or 5-ridge ribbed type V-belt driving both the air conditioner and power steering pump, belt tension is much greater. With a used belt, deflection should only be about 1 / 4 in. (6.35mm).
RX-7
See Figures 4, 5 and 6
The RX-7 may be equipped with as many as three or four separate drive belts. The belts are arranged at the front of the engine and drive the cooling fan/water pump, alternator, power steering pump, emission control air pump and air conditioner compressor (if so equipped).


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Fig. Fig. 4: Checking belt tension on 1979-85 RX-7
Check the tension of each belt at the arrows numbered 1, 2, 3 and 4 (depending on year) shown in the illustration. Press on the belt with your thumb using moderate pressure (about 22 lbs.). The belts should give or deflect the amounts shown in the chart.


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Fig. Fig. 5: Checking belt tension on 1986-89 RX-7


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Fig. Fig. 6: RX-7 belt deflection limits
Use the following appropriate procedure and illustration to make drive belt adjustment(s).
ALTERNATOR AND AIR PUMP
See Figure 7

  1. Slightly loosen the stationary pivot bolt on the alternator or air pump.
  2. Loosen the adjusting bolt.
  3. Using a piece of wood (tool handle, etc.) as a prybar, move the alternator or air pump outward or inward until the proper deflection is obtained.



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Fig. Fig. 7: Adjusting alternator drive belt tension on 1986-89 RX-7
When prying on the alternator or air pump, make sure the prybar is anchored against the engine case and not against a component (distributor cap, etc.) which could break.

  1. Tighten the adjusting bolt. Remove the prybar and tighten the pivot bolt.

AIR CONDITIONING COMPRESSOR AND POWER STEERING PUMP
See Figures 8 and 9
  1. Loosen the locknut on the idler pulley, if so equipped.
  2. Turn the adjusting bolt until the proper tension is reached.



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Fig. Fig. 8: Adjusting air conditioning compressor drive belt tension on 1986-89 RX-7

  1. Tighten the locknut and recheck the belt tension.



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Fig. Fig. 9: Adjusting power steering pump drive belt tension on 1986-89 RX-7


REMOVAL & INSTALLATION

All Models

  1. Loosen the accessory being driven and move it on its pivot point to free the belt.
  2. Remove the belt. If an idler pulley is used, it is often only necessary to loosen the idler pulley to provide enough slack to remove the belt.

To install:
  1. After the new belt is in place and properly tensioned, start the engine and allow it to run for about five minutes to seat the new belt.
  2. Stop the engine and recheck the belt tension. Adjust as necessary.

On engines with many driven accessories, other belts may have to be removed to access the one being replaced.

May 27, 2012 | 1989 Mazda 323

1 Answer

Tension pulley seized


If your tension pulley is seized you can do one of 2 things, replace the idler wheel on the tensioner or the whole tensioner assembly as a complete unit, sometimes sand and dirt bind up the tensioner inside and if not taken care of will ruin the bearings on other devices using the serpentine belt. If your belt is running over a frozen pulley, you need a new belt also. Check all your other accessories for damage while the belt is off.

Apr 24, 2012 | 2002 Pontiac Sunfire

2 Answers

What makes a belt squeak?


Belts squeak for the same reason tires do when they spin. They are slipping. Something isn't turning as fast as the belt wants it to. On ford it's usually ether the idler sprocket or the tensioner. If you remove the belt and try spinning all of the pulleys by hand.( note the crank wont spin freely) you will usually be able to tell witch ones slipping.

May 14, 2011 | 1999 Ford Taurus

3 Answers

Why belt keeps shredding


usually due to a bad bearing, or from resistance due to a frozen or failing assemble, as in power steering, alternator, or an idler. The best way to determine is to remove the belt and check all pulleys for play and resistance.

Feb 10, 2011 | 2000 Chevrolet Venture

3 Answers

The drive belt keeps coming off of the tensioner everytime it rains or snows. We have replaced the Tensioner and the belt and made sure the splash cover is on under the van. Please help!!!!!


Something may be out of line in the belt path, an idler pulley that has a bad bearing, or one of the pumps or the alternator is trying to seize-up. Remove the belt and check each pulley that the belt travels over for bearing looseness or rough turning. When the belt is reinstalled, check that the belt seats on each pulley properly. Test it by directing water from a hose while the engine is running--you should only have water thrown off in all directions. Good luck!

Feb 10, 2010 | 1998 Dodge Grand Caravan

1 Answer

Siezed idler pulley


tension chk aways between ALT and CP (harmonic balancer) and yes the idler (tensioner) is below the AC compressor. Recommend you replace it if seized.

Apr 01, 2009 | 1992 Subaru Loyale

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