When to replace the idler pulley on a Pontiac Grand Prix?
This “how to” automotive repair guide was specifically written to assist owners of the 6th generation (1997, 1998, 1999, 2000, 2001, 2002 & 2003) General Motors Pontiac Grand Prix GTP in replacing a tensioner pulley and idler pulley. Owners of other GM cars with engines similar to the 3800 Series II 3.8L V6 may also find the guide to be useful.
How to remove the supercharger belt on a Pontiac Grand Prix?
The supercharger belt must be removed first on GM 3800 Series II engines equipped with the Eaton M90 Supercharger. If you have a naturally aspirated GM 3800 Series II engine (L36), skip down past the next block of text. To remove the supercharger belt, place the 15mm socket and long handled wrench on the supercharger tensioner pulley.
How do you remove a tensioner pulley on a Pontiac Grand Prix?
The pulley’s bolt is reverse threaded so to the left is tighten and to the right is loosen. After loosening the tensioner pulley’s bolt, it will come off with a large metal washer attached. The 3″ smooth tensioner pulley itself can be removed by gently rocking it while pulling it away from the engine.
Why is my idler pulley on my GTP not working?
A few days ago the serpentine or “accessory” belt in my 2001 Pontiac Grand Prix GTP tore itself apart after some spirited driving. While replacing the Serpentine Belt and the Supercharger Belt, I noticed that a tensioner pulley and an idler pulley didn’t spin easily due to their bearings being worn out.
This “how to” automotive repair guide was specifically written to assist owners of the 6th generation (1997, 1998, 1999, 2000, 2001, 2002 & 2003) General Motors Pontiac Grand Prix GTP in replacing a tensioner pulley and idler pulley. Owners of other GM cars with engines similar to the 3800 Series II 3.8L V6 may also find the guide to be useful.
Where is the tensioner pulley on a Pontiac Grand Prix?
The supercharger tensioner pulley is located near the front of the car right behind a black 3″ grooved idler pulley. Then push the wrench towards the front of the car to relieve the tension on the belt.
The supercharger belt must be removed first on GM 3800 Series II engines equipped with the Eaton M90 Supercharger. If you have a naturally aspirated GM 3800 Series II engine (L36), skip down past the next block of text. To remove the supercharger belt, place the 15mm socket and long handled wrench on the supercharger tensioner pulley.
A few days ago the serpentine or “accessory” belt in my 2001 Pontiac Grand Prix GTP tore itself apart after some spirited driving. While replacing the Serpentine Belt and the Supercharger Belt, I noticed that a tensioner pulley and an idler pulley didn’t spin easily due to their bearings being worn out.
What’s the torque on a GM Pontiac Grand Prix?
Torque it down to about 50 Nm or 37 lb ft with a torque wrench. I tightened the bolt snugly and then turned the wrench another 1/8 to 1/4 turn.
The supercharger tensioner pulley is located near the front of the car right behind a black 3″ grooved idler pulley. Then push the wrench towards the front of the car to relieve the tension on the belt.
Torque it down to about 50 Nm or 37 lb ft with a torque wrench. I tightened the bolt snugly and then turned the wrench another 1/8 to 1/4 turn.
Where is the tensioner on a Pontiac Grand Prix?
Place the 15mm socket and long handled wrench on the supercharger tensioner pulley (just below the SC pulley and towards the front of the car) with the other hand. Push the wrench towards the front of car to relieve the tension on the belt. Slip the SC belt over the SC pulley. Double check the routing and fit of the belts.