Question about 1990 Pontiac LeMans

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I have just replaced the alternator in my 1990 pontiac le mans. How do i get the fan belt back on? i cannot find a way to loosen the tension

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Thier sould be a idler wheel with a half inch square hole in it to but a half inch rachat in it and turn it the way so you can install the belt

Posted on Sep 14, 2010

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1 Answer

Cant get the timing belt cover off of my 1990 pontiac sunbird


you need to loosen the tensioner bolt for the serpentine belt the tensioner will swing out of the way of the timing belt cover

Aug 05, 2012 | 1990 Pontiac Sunbird

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Alternator replaced


REMOVAL & INSTALLATION

The different engine applications that the Ford Taurus and Mercury Sable are equipped with utilize different types of alternators. The following is a list of vehicle applications. For 1986-90 vehicles:

The 3.0L and the 3.8L engines utilize a side terminal alternator.

The 2.5L and the 3.8L (with Police Package only) engines utilize an alternator with an integral rear mount regulator and an internal fan.

The 3.0L SHO engines utilize an alternator with an internal fan and regulator.For 1991-93 vehicles:

The 2.5L, 3.0L and 3.8L engines utilize an alternator with a rear mount regulator and an internal fan.

The 3.0L and 3.2L SHO engines utilize an alternator with an internal regulator and fan.For 1994-95 vehicles:

The 3.0L, 3.8L and 3.0L SHO engines utilize an alternator with a rear mount regulator and an internal fan.

The 3.2L SHO vehicles utilize an alternator with a internal regulator and fan.


1. Disconnect the negative battery cable.
2. Loosen the alternator pivot bolt, then remove the adjusting bolt.
3. Remove the alternator drive belt from the drive pulley.
4. Tag and disengage the wiring terminals from the back of the alternator. The stator and the field wiring are the push-on type of retainer. After depressing the lock tab, the connector should be pulled straight off of the terminal to prevent damage.
5. Remove the alternator pivot bolt, then remove the alternator from the engine.
6. Position the alternator on the engine.
7. Install the alternator pivot bolt and the adjusting bolt, but do NOT tighten the bolts until the drive belt it tensioned.
8. Engage the wiring terminals to the alternator, as tagged during removal.
9. Install the drive belt over the alternator drive pulley, then adjust the belt tension using Belt Tension Gauge 021-00019, or equivalent.

When adjusting belt tension, apply pressure on the front housing only.

10. Tighten the adjusting bolt to 30-45 ft. lbs. (41-61 Nm), then tighten the pivot bolt to 50-70 ft. lbs. (68-94 Nm).
11. Connect the negative battery cable.


Hope helps.

Jan 07, 2011 | 1990 Ford Taurus

1 Answer

I'm changing the altanator on a 1999 Pontiac Sunfire. How do I release the belt tension?


Loosen the tensioner for the accessory belt for the alternator and remove the belt. Remove the two long bolts that are holding the alternator in the bracket.
(Sometimes you have to remove the tensioner arm completely or just loosen it and it will slide over to relieve tension on belt)
Full article: http://www.ehow.com/how-does_4829335_removing-alternator-pontiac-sunfire.html

Nov 30, 2010 | 1999 Pontiac Sunfire

1 Answer

How do you replace alternator on 1986 fiero gt


Remove negative battery cable. Jack up rear of car. Remove passenger side rear wheel. Loosen A/C compressor tension bolt. Remove A/C belt. Disconnect 2 wire plug and single wire bolted to back of alternator. Loosen alternator tension bolt. Remove alternator pivot bolt from up top of bracket. Wiggle out through bottom.

Reverse for install.

Good luck,

Rebel Faggioli

Oct 07, 2010 | 1986 Pontiac Fiero

1 Answer

How do i loosen the tensioner . to remove the belt to replace the water pump ?


YOU NEED BELT TENSIONER TOOL OR 3/8 INCH BREAKER BAR PLACE IN THE SQUARE HOLE IN TENSIONER THEN ROTATE BELT TENSIONER COUNTERCLOCKWISE TO RELEASE BELT TENSION SLIP BELT OFF ALTERNATOR.TO GET OFF.SLIP BELT BACK OVER ALTERNATOR WHEN YOU REPLACED WATER PUMP.

Sep 05, 2010 | 1999 Pontiac Grand Am GT

2 Answers

How to change the alternator in a 1995 Grand am Thanks


First unhook battery. Then unplug connectors and wire. Loosen bolts to take tension off of belt. Remove belt remove bolts holding alt. Place new alt in spot remember wich holes go where so not upside down replace bolts dont tighten yet. Install belt on all pulleys tighten tensioner bolt on alt bracket to snug tension after proper tension is achieved tighten all bolts and nuts. replace all plugs and wires reconnect battery pay attention to pos and neg dont hook up battery backwards. Congrats your done.

May 03, 2010 | 1995 Pontiac Grand Am

1 Answer

How to replace my belt on my alternator on a 1990


loosen the lock bolt & nut on your alternator don't forget the one underneath, back off the tension remve the belt off the pulley then work it off over the fan you will find that hard but it can be done, put the new belt on in reverse order.

Ps let the motor cooldown first or wear leather gloves to save from burns.

Apr 01, 2010 | 1990 Toyota Pickup

1 Answer

How to fit fan belt for mercedes 250 deisel


1- Loosen the Tension Lock Nut between the power steering pulley and water pump pulley first. This is important. Otherwise, it will cost you more to replace the tension nut kit. 2- Loosen the Tension Nut next. 3- There are 2 bolts to hold the alternator on to the engine bracket, Loose the top one while remove the bottom one. Use the top one as a pivot point to move the alternator to get the belt out and in. 4- After put the new belt in, follow the reverse order. Have fun in a hand-on job.

Oct 09, 2009 | 1990 Mercedes-Benz E-Class

1 Answer

Alternator in 190e m.b. 1990 model


It should be either just above the air conditioning compressor, or on the opposite side. It will have two wires coming out - a red wire ( 12 volt plus) and a black ground wire. The a/c compressor has metal fittings and rubber hoses as well as a clutch. No need to touch the a/c compressor. I changed alternators on my 300D models and 300 SD. They are very much the same. You will need to loosen the adjustment slider and physically slide the alternator to loosen the belt. Remove the wires from the alternator - probably a plug at the rear. If the car has a single serpentine belt the problem is more complex because so many units run off the same belt, including the water pump, fan and a/c compressor. Restoring proper tension is critical. The alternator swings in a vertical arc on a long bolt on the bottom or side that runs from front to rear.  Replacement is not difficult - hold the new unit in place while you insert and tighten the long bolt, then reposition the tension slider and tighten that bolt. The tension needs to be correct or else the belt will slip and squeal and your battery will not charge properly. You may need a crowbar the achieve the right tension while you tighten the tension slide. Instead of replacing the alternator altogether, why not just replace the brush on a round plate at the rear. Most alternator failures involve worn brushes. The rebuilders simply replace them and sell a "rebuilt" unit. Make sure you can get brushes and/or a brush assembly before you start.. Loosen the tension but do not remove the alternator. Remove the two small nuts that hold the brush assembly at the rear and slide it off. Replace with the new one.  Be sure you retract the brushes so they will slip back over the armature, and align with the retaining screws. Tighten them. Re-tension the belt and you're home free. I have done this on the road when necessary. Easier and cheaper than changing the entire alternator.

Dec 20, 2008 | 1990 Mercedes-Benz 190

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