Question about 1999 Pontiac Montana

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Tilting the Engine

Mechanic says we'll have to tilt this engine in order to get to the alternator to replace it. How is that done?

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  • Allen Prater May 04, 2014

    It is a hard one to change the alt. on,but you don't have to tilt no engine.It is easier to take the wiper assemble lose by removing the brackets and sit it aside.First take the wipers off,then the plastic cover that goes from side to side,then you can see what you need to do from there.

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Set the parking brake and then put the shifter in neutral so you will not damage the transmission. Remove both upper engine mounts, They make a special tool for this but its a little expensive so I just use a ratchet strap. Hook one end to the engine and the other to something solid on the front of the engine compartment. Pull the strap as tight as you can and then ratchet the engine forward as much as you can. It won't give you enough room to remove the alternator, but it will help give you room to take off what you need to to get it out.

Posted on Jan 09, 2013

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The engine uses an air flow meter and any vacumn leakages would cause the engine to shut off. I would suggest checking the air hose for leakages, hidden cracks that would only appear when the engine is shifted into reverse.


When in forward gears, the engine would tilt to one side, there are no leakages but when shifted into reverse, the engine tilts the opposite way, ( old engine mounts tends to allow the tilting to be quite substantial) causing the air hoses etc to open up any cracks and allowing excessive air to leak between the air flow meter and throttle body causing the stalling.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.


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The three front ones are simple and the three back ones are challenging. There are two ways to replacing the rear spark plugs on the Montana.
1. If your arms are long enough and you have longs extensions with a spark plug socket with a swivel build in to it, you can get to the plugs from under the Montana.
2. You can get to the rear plugs buy disconnecting the two dog bone engine mounts in front of the engine and tilting the engine forward. You can do this by placing the parking brakes on and disconnecting the dog bone, once that is done. Place your foot on the brakes and take the parking brakes off and push the Montana forward till the engine tilts forward enough to give you the room you need to get your arms over the top of the engine with the extensions and spark plug socket. Make sure you place the parking brakes back on and put a block at the rear of the engine to ensure the Montana will not move back and cause you to loose your arm or head.
Note that you need to keep the transmission in park when tilting the engine and that your going to have to replace the spark plug wires and do everything by touch to replace the rear spark plugs.
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