Question about 1990 GMC Sierra

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Bypass power steering

How do i measure for the length of the shorter belt that i will need to use to be able to bypass the power steering pulley???

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  • tee_minou Jan 24, 2009

    thank you!!!!!



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The Easiest way to do this is to get Several Belts and try them. Most auto Parts Stores will let you bring the Others back after you find the Correct length Belt. This is Trial and Error and will take some work.

Posted on Jan 23, 2009

  • Travis Humphries
    Travis Humphries Jan 24, 2009

    No Problem! Happy to Help!



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1995 F150 Ford pickup 5.0 L engine can I bypass the air pump pulley and the AC with a serpentine belt and how long is it

There are some bracket kits to bypass A/C pulleys but unknown for air pump pulley. Will help by saying when you get a new serpetine belt be sure that the grooves match the pulleys. What you have to worry about is the speed of the alternator and water pump and steering pump when the belt length is changed. You may over or under speed the steering pump and have too much or too little power assist at different speeds.

Easiest way to measure this is by removing old belt, (take photo for routing first) and then use rope to do trial routing. Once you get the spring on the idler arm to fully tension for rope you should be pretty close. Then slip off rope and measure length. Do not start engine with rope in place.

Nov 15, 2017 | Ford Cars & Trucks

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What is a good belt size to use to bypass the a.c. pulley in a 2007 Ford Taurus V6 3.0

it will be pretty much hit and miss to get the right bely
you can get an estimate of the belt length by measuring the distance between where the existing belt contacts the power steering and crank pulley
make a note of that length (A)
now using a tape measure measure from the contact point on the crank pulley around the ac pulley to the contact point on the power steering pulley
make a note of that length (B)
now take A from B and reduce the original belt length by that amount
example -- if the original belt is 1485 mm long and the difference is 145 mm then you would be looking at a new belt length of 1340 mm
well that is the general idea
personally replacing the ac compressor is a far better idea , even if you do not re-gas the system or replacing the ac pulley bearing --cheaper still

Jul 08, 2017 | Ford Cars & Trucks

1 Answer

Need to bypass power steering pulley

if you can there may be a shorter drive belt that can be fitted that just misses the pulley
I would take it to a power steering specialist shop as they may have such a belt

Nov 02, 2015 | Cars & Trucks

3 Answers

No power steering pulley need to bypass it shorter belt what size do I use

sadly we would have no idea . doubt it will work well without the power steering tho

Sep 25, 2015 | Cars & Trucks

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Bypass air condition belt

If you are trying to bypass the compressor for the air conditioner then you need to ensure two things.

1. That there is some way to tension that belt if the compressor is bypassed.
2. you will need to find a shorter belt that has the same physical profile. Wrap a string around the pulleys that remain and measure the length. A shop should then be able to give you a belt that will fit. Take the old belt with you to ensure it has the right profile.

Jul 03, 2015 | Cars & Trucks

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How to bypass power sterring pump on 94 camaro v6

You may not be able to.

My best guess is to head to a NAPA or other auto part store and try to find an engine like yours that came without ps.

At the very least you could try some camaro fourm.

Mar 18, 2015 | Cars & Trucks

1 Answer

What size belt do i use if i remove the A/C compresser

There is a company which makes a bracket with another idler pulley on it for replace the A/c compressor. I believe it costs between $60 and $90 Dollars. Problem with replacing the belt with a smaller, shorter belt by eliminating a pulley is the RPM of the Alternator and the Power steering pump.

To make an explanation, if 1 loop of the original belt turns the Alternator once every 8 inches, then a 48 inch belt will turn the Alternator 6 times a cycle. A shorter belt will make more cycles around the crankshaft pulley, the Alternator and so forth.

This will increase wear. The Fan blade will spin faster and you can get less assist from Power steering if it is speed sensitive. Power steering may or may not be better at Parking and will surely flatten out more quickly at higher speeds resulting in high steering effort.

Without the conversion pulley, the Geometry for the spring loaded idler pulley may not keep enough tension on the shorter belt for proper tension.

But to measure for eliminating the pulley, just slip off the old belt and get a string with a loop on 1 end. Press down on the spring-loaded idler pulley and place the string around each pulley and then pull the end of the string through the loop until it is snug. Pinch off the position with your finger to where it seems that the tensioner is applying tension with more tension possible for a stretched belt.

Temporarily slide the end of the string off, secure a removeable knot, and then let the string handle some of the tension in the idler. Basically you are making a template for the correct belt length. If all looks well, the string can be fit on a belt sizer or just measure it. Remember the buy a belt with the same number of grooves.

Another thing to remember is the car will still try to adjust the engine idle for the A/C, sometimes even in the Defrost function, because that is how they are made. So you may have idling problems without the A/c.

I hope my solution has helped you.

Sep 30, 2012 | 1997 Lincoln Town Car

3 Answers

I currently own a V6 3.0 L Mercury Sable LS. The AC pulley has stopped working entirely as the ac clutch has ground it into the compressor. I need to know the length of a serpintine belt with no ac. I...

Talk to your automotive supply. My understanding is that a Non-AC belt will run right thru the area where the AC pulley is. You can get a bypass pulley that will allow you to avoid the AC and it's pulley and a specific belt for that setup.

Mar 13, 2011 | Mercury Sable Cars & Trucks

1 Answer

How to bypass the ac with a shoter belt

There is a easy way to re-route the belt after the A/C is removed on any 4.6L Due to the idler and tensioner. When the a/c is not running the pulley spins freely anyway. On 99 and older panthers you can get a shorter belt to bypass the power steering for a little extra power, but need install A/C COMPRESSOR BYPASS PULLEY, or you could buy a a/c compressor delete kit comes with a bracket and idler pulley, that would make things easier, you can use a stock belt with that kit.

Check this for 99' and older belt routing...


Also, check this diagram (click over pic for zoom)...


The tensioner would still work, just not very well. So you would need to by a tight belt to compensate. As far as measuring the new belt size, you will need to use a tape measure, or some string and then measure the length. The best option is an a/c delete 'kit'

Green line represents a revised belt routing in order to *bypass* the A/C compressor. With this method, the tensioner WILL work but VERY limited - you must purchase a tight belt.

Note this is only applicable for the '93-'99 belt routing

Hope helps (remember to rate and comment this answer).

Dec 15, 2010 | 1999 Mercury Grand Marquis

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What size of belt can I use on a ford Windstar 2000 3.8L if i want to bypass the a/c compressor.

You may have a problem finding that info out, but an easy way to do it if you can see and reach it, is to make a mark with chalk on the power steering pulley, as well as crankshaft pulley, then run a string or similar from the mark on power steering pulley, around AC compressor pulley, and down to mark on crankshaft, then measure that distance. Now run same string from power steering pulley mark, directly to crankshaft pulley mark, (by-passing AC pulley), and measure that as well. Subtract by-passed length from, non by-passed, will give you the difference in length. Now when you go to parts store for new belt, they can give you a belt that is that much shorter than original one listed. The actual belt part # usually tells the length in it. Just subtract your difference from original, and ask for that length, same design. Sounds pretty complicated, I know, but it really isn't. You used to be able to just say" give me the one for the same vehicle without AC", but most vehicles have AC now, so it isn't quite that easy anymore. Make sure you take a good look and be sure you have the clearance so belt doesn't hit/rub on AC pulley during operation.

Dec 05, 2009 | 2000 Ford Windstar

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