How to install serpentine belt on 92 olds 3800 engine

Easy job on those vehicles. Usually need a wrench that fits over the belt tensioner, and you raise or lower it, taking tension off the belt. then just slip it off the nearest pulley-often the alternator pulley. Now you can let go of the tensioner and remove belt. Notice how it is fit. There should be a diagram on a sticker of how the belt fits on.

This is the routing of the serpentine belt on the GM 3.8L V6 3800 engine.
It is used in many Buick, Pontiac, Chevrolet and Oldsmobile cars.
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check engine light to come on. " line[number++] = "The anti-lock braking system (ABS) uses several sensors, motors, and a computer in conjunction with the normal braking system. The ABS regulates the brake pressure in order to reduce wheel lock-ups. Reduced wheel lock-ups improve the driver's control of the vehicle during braking. Improved stability and steering enable greater control of the vehicle in the case of an abrupt stop. An ABS warning light means a problem was detected." line[number++] = "The TRAC OFF light or indicator on the dash or message center is usually related to the ABS system, and sometimes to the check engine light. When this is on, the traction system is disabled. A problem in the ABS system is usually the cause, and would have to be scanned for codes. Sometimes an engine problem that causes a check engine light will also cause the TRAC OFF light to come on. In this case, the PCM would have to be scanned for codes." line[number++] = "The security system on todays cars and trucks prevents the vehicle from being stolen. There are many variations of the system going back to the early 1990's. This warning light could be on when the engine is running, indicating a fault has been detected in the system. If left unrepaired, there is a good posiblity that the car will eventually not start." line[number++] = "The tire pressure monitor system in todays cars use a radio frequency (RF) transmitter in each wheel valve stem to relay pressure information to the module. The Service Tire Pressure Monitor System Light means there is a problem in the system, not a low tire. The Low tire pressure warning would come on for a low tire." increment = Math.floor(Math.random() * number); document.write(line[increment]); //--> The anti-lock braking system (ABS) uses several sensors, motors, and a computer in conjunction with the normal braking system. The ABS regulates the brake pressure in order to reduce wheel lock-ups. Reduced wheel lock-ups improve the driver's control of the vehicle during braking. Improved stability and steering enable greater control of the vehicle in the case of an abrupt stop. An ABS warning light means a problem was detected. Warning Lights

This is the routing of the serpentine belt on the GM 3.8L V6 3800 engine.
It is used in many Buick, Pontiac, Chevrolet and Oldsmobile cars.

have a good day !

On the bracket that attaches the motor mount to engine, the lowest nut and stud must be removed (can reach by removing wheel and from bottom). Then remove spacer (that goes around stud), install belt then reinstall spacer, stud and nut.

Passenger tire, passenger inner well cover, serpentine belt, pulley that attaches to harmonic balancer , nut for harmonic balancer, then harmonic balancer. Sensor is screwed to engine. Disconnect battery prior to and before install of sensor. The 3800 has a special balancer puller designed just for it, not sure were you could rent one it is a specalty tool.

Here ya go...


Serpentine drive belt routing-GM “C and H” Bodies 3.8L (VIN 1) engine

Hello! Here is the belt routing guide for your engine.





Hope this helps and thanks for using FixYa!

The supercharged 3800 engine uses two accessory drive belts. The outer belt drives the supercharger. The inner belt drives the generator, power steering pump, coolant pump and air conditioning compressor. All driven accessories are rigidly mounted to the engine. Drive belt tension is maintained by the spring loaded belt tensioner. Each belt has its own tensioner.
Remove: Place a jack with a block of wood on it under oil pan to support engine. Caution : Be sure the wood block extends past the width of the oil pan to avoid damage. 
Torque axis engine mount bolt where it connects the mount to the engine mounting bracket. 
Electrical connector from crank sensor. 
Engine mounting bracket lower stud and lower engine to allow stud to clear frame rail. 
Raise engine and reinstall bolt into torque axis mount. Lower engine to allow spacer to be removed. 
Belt(s)

Istalling: Belt. 
Spacer. Remove bolt from torque axis bracket and lower engine. 
Electrical connector to crank sensor. 
Mounting bracket stud. 
Raise engine and install torque axis mount bolt. 
Tighten bolt to 87 Nm (52 lb. ft.) 

Good luck and hope this helps.

I will try this again.

Before replacing or installing the old belt you need to check all of the pulley's that the belt rides on for play. Pay special attention to the spring loaded tensioner pulley. They can sieze and cause the belt to come off.

I found this picture it is a bit large for the screen.