I needto bypass a/c compressor dont know what size belt to buy or the routing for belt if its different without a/c

That's not the way that you do it. You remove the AC compressor and install a Bypass Pulley in its place. The belt and routing remain the same.

https://www.google.com/search?q=2006+Pontiac+Torrent%2C+AC+bypass+pulley

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If you mean remove the compressor and use a different belt, I doubt it.
That model did not come without ac, so it would be difficult if not impossible to route the belt without the compressor pulley in place.
You could buy a used compressor and install it without recharging it.

Well I will start by saying it can't be done.
Now, there might be a way if you can find a pickup truck without ac.
Standard pickup trucks with the 4.6 and 5.4 engines do come without ac in rare cases, especially ones sold in northern states. And the routing is the same for either truck engine without ac. But the belts are different between the pickup trucks and your Expedition. I don't know what difference is other than the Expedition belt is slightly shorter than the pickup truck belts with ac.
You may be able to run a shorter belt over the pulley above the crank and then over the pulley above the compressor, but I would expect to find bolts and brackets in the way.
And there is no way to know what the length would be without trying to measure the distance going that route, since engines without ac are routed differently. Some of the idler pulleys are in different places on the engines without ac.
And since all Expeditions come with ac, there is no belt listed without ac to get the length.

At Auto Zone, ask for part number 34223. It is a bypass pulley that you can replace the a/c compressor with so you can use the original belt without issue.

Hi,

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What you are looking for is called an 'air conditioner compressor bypass pulley'. Most chain auto parts stores have them in stock.

All you do is install the bypass pulley and use a shorter belt.

The only downside is the cost of $25-$40. That's about one-third the cost of a remanufactured unit and the labor is compatible.

All the best

Ben

some cars dont need a bypass pulley just remove the ac compressor and get a belt for non ac some cars you cant do this because the belt routing is different with an idler pulley go to pepboys or autozone and ask them to print out the belt routing for both if they cant do it go to a gm dealer and ask hope this helps

I would see if there is a belt specified for your car, with your engine size, etc., but without A/C. Buy that belt, and find a description of the belt path far that model.

You might be able to bypass the A/C compressor that way.

Of course, the best idea is to get the compressor repaired...

its the same. but a different pulley takes place of the a/c compressor. I know DORMAN makes a few "bypass pulleys" to do this, but dont know if they make one for your truck. at the worst... you will need to get a pulley and bracket from the dealer for a truck without a/c . as long as your a/c pulley bearing is ok, you can let the belt run there.

Well if you're trying to bypass the air conditioning compressor, your original serpentine belt will obviously not work as it will be too long. Installing another pulley would really be more work that it's worth and likely cost a fair amount since you'd have to have a custom bracket made, or a mount to fit in place of the compressor. Your best bet would be to have your local parts supply look up the belt for the same make, model, year and engine specs as your vehicle but without Air Conditioning. The g20 uses all the same mounting locations for other belt driven accessories regardless of the presence of an AC compressor. Therefore, the belt should fit just fine. Also, you should spot on the belt routing diagram under the hood that it shows the optional routing for a belt without AC. (It does on mine anyway) Good luck and let me know how it goes.

yes, there could be an "a/c delte" pulley out there that would go where the compressor was. double check that you are routing the belt right. all other pullies are the same. maybe your diagram is wrong or you are misinterpreting. (it happens to everyone) if you still can't get it, you can wrap a peice of string around all the pullies, measure the string, and ask for that size belt.