Bypass AC compressor...here are the part #'s
#21
Senior Member
2002 5.4 That setup lasted 1000 miles if that long. Around the Champaign area only Napa could get the bipass pulley apparatus overnight and it was about $60. Advanced Auto had the grooved pulley and belt in stock ad I was on my way back to work. at a total cost of $52.63
#22
Worked perfect! 8 year old post but worked for me. Thanks for the help.
I started a thread the other day asking if anyone knew the belt # needed to bypass a seized AC compressor but didn't have any luck. This morning I did the fix to my 99 4.6 4x4 scab and it was too easy. The belt needed to be shorter and I swapped the idler pulley for one the same size but ribbed since the belt now runs over it instead of under it. The end result works so well that I can't figure why Ford went to the trouble of designing the AC/non-AC setups so differently. Here are the Gates part #'s needed to do the job.
Belt...#K080806 8 rib/81 1/8" long
Idler Pulley...#38052 8 rib/90mm dia.
The parts can be looked up here...
http://www.gates.com/index.cfm?location_id=3359
for all the details.
I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again
J.R.
Belt...#K080806 8 rib/81 1/8" long
Idler Pulley...#38052 8 rib/90mm dia.
The parts can be looked up here...
http://www.gates.com/index.cfm?location_id=3359
for all the details.
I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again
J.R.
#23
2008 f150
I have an 08 F 150 with the 4.6L. the AC compressor is making a terrible racket. I have already tried the serpentine belt for without AC. Following the diagram under the hood the belt was too loose. I switchedbthe side of the idler and tensioner it ran on and it was too short. If anyone has done this and know what belt to ask for I would greatly appreciate it. Thank you.
#24
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Join Date: Dec 2009
Location: Monetville Ontario Canada
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2007 expedition 5.4 ac bypass
howdy from Monetville Ontario thanks for your help we were in Georgia traveling to Florida on Sunday bearings went on the ac clutch what do you do google and you fine folks showed up again i was near an auto zone with great folks they let me try belts till i got it right the belt uses its own stretch for tencion as the belt bypasses the clutch the tensioner and one idler pulley works great will fix her up when i get home , with it on there is still about 1/4' clearence between belts coming from crank to alternator from Auto Zone belt number is #6PK2005 and my ford f150 2006 is identical so will work on it as well put belt all around and squeezed it on the top smooth idler
Mark
Mark
#25
Slight deviation with a longer belt.
[QUOTE=JohnnyR;687285]I started a thread the other day asking if anyone knew the belt # needed to bypass a seized AC compressor but didn't have any luck. This morning I did the fix to my 99 4.6 4x4 scab and it was too easy. The belt needed to be shorter and I swapped the idler pulley for one the same size but ribbed since the belt now runs over it instead of under it. The end result works so well that I can't figure why Ford went to the trouble of designing the AC/non-AC setups so differently. Here are the Gates part #'s needed to do the job.
Belt...#K080806 8 rib/81 1/8" long
Idler Pulley...#38052 8 rib/90mm dia.
The parts can be looked up here...
http://www.gates.com/index.cfm?location_id=3359
for all the details.
I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again
J.R.
I couldnt find an 81 and 1/8 belt. I got an 81.6 belt and it was too big. Squeeled. So l traded the larger idler pulley without ribs, that i had just removed, with the smaller tensioner pulley and this worked perfectly. .
Belt...#K080806 8 rib/81 1/8" long
Idler Pulley...#38052 8 rib/90mm dia.
The parts can be looked up here...
http://www.gates.com/index.cfm?location_id=3359
for all the details.
I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again
J.R.
I couldnt find an 81 and 1/8 belt. I got an 81.6 belt and it was too big. Squeeled. So l traded the larger idler pulley without ribs, that i had just removed, with the smaller tensioner pulley and this worked perfectly. .
#26
Good info
I started a thread the other day asking if anyone knew the belt # needed to bypass a seized AC compressor but didn't have any luck. This morning I did the fix to my 99 4.6 4x4 scab and it was too easy. The belt needed to be shorter and I swapped the idler pulley for one the same size but ribbed since the belt now runs over it instead of under it. The end result works so well that I can't figure why Ford went to the trouble of designing the AC/non-AC setups so differently. Here are the Gates part #'s needed to do the job.
Belt...#K080806 8 rib/81 1/8" long
Idler Pulley...#38052 8 rib/90mm dia.
The parts can be looked up here...
http://www.gates.com/index.cfm?location_id=3359
for all the details.
I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again
J.R.
Belt...#K080806 8 rib/81 1/8" long
Idler Pulley...#38052 8 rib/90mm dia.
The parts can be looked up here...
http://www.gates.com/index.cfm?location_id=3359
for all the details.
I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again
J.R.
#27
2002 F150 5.4
Eliminated the ac belt route. Left the ac compressor intact.
Replaced the top tensioner pulley w/grooved $18.79 with Part CARQUEST by Dayco Idler Pulley No.89009
The belt seems to be too small at first because it catches on the harmonic balancer and new grooved pulley outer edges. Simply slid the grooved pulley on with the belt in place on all pulleys and balancer and relieved tensioner pulley pressure. After tightening the bolt on grooved pulley release your 1/2 ratchet for belt tension.
CARQUEST by Dayco Idler Pulley No.89009
SPECIFICATIONS
Belt Type: Serpentine
Bracket Included: No
Diameter: 76 mm
Idler Pulley Bearing Inside Diameter: 17 mm
Idler Pulley Groove Quantity: 6
Idler Pulley Material: Polymer
Idler Pulley Width: 28.7 mm
https://shop.advanceautoparts.com/p/...9009/3911365-P
Replaced the serp belt with a CARQUEST by Dayco Poly Rib Belt Premium, Part #5060800
https://shop.advanceautoparts.com/p/...thM23wnw%3D%3D
Eliminated the ac belt route. Left the ac compressor intact.
Replaced the top tensioner pulley w/grooved $18.79 with Part CARQUEST by Dayco Idler Pulley No.89009
The belt seems to be too small at first because it catches on the harmonic balancer and new grooved pulley outer edges. Simply slid the grooved pulley on with the belt in place on all pulleys and balancer and relieved tensioner pulley pressure. After tightening the bolt on grooved pulley release your 1/2 ratchet for belt tension.
CARQUEST by Dayco Idler Pulley No.89009
SPECIFICATIONS
Belt Type: Serpentine
Bracket Included: No
Diameter: 76 mm
Idler Pulley Bearing Inside Diameter: 17 mm
Idler Pulley Groove Quantity: 6
Idler Pulley Material: Polymer
Idler Pulley Width: 28.7 mm
https://shop.advanceautoparts.com/p/...9009/3911365-P
Replaced the serp belt with a CARQUEST by Dayco Poly Rib Belt Premium, Part #5060800
https://shop.advanceautoparts.com/p/...thM23wnw%3D%3D
#28
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Join Date: Dec 2021
Location: New Jersey argh
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Same problem 2010 with 4.6
What is best option? Doorman delete pulley and tie up the compressor out of the way until I can afford replacement OR a ribbed pulley on the passenger side above the tensioner with a shorter belt? Can’t find the right size belt or the pulley numbers. Anyone help?
#29
Senior Member
Take a read through the posts from 2016ish.. It will also be worth noting if you have a 8 rib or 6 rib best system. Easy to see, just count the ribs on the belt. I'd suggest buying a few belts so you can fine tune them and return the ones you don't need.
Turbo Ghost, Dean Studer, JohnnyR, and myself give part numbers.
#30
Senior Member
^^^ Except that won't work. The other tensioner swings where the compressor resides.
Last edited by white89gt; 12-03-2021 at 10:23 AM. Reason: Added Photo