A/C Compressor Replacement.

BigMike18

Member
So I just bought an 05 Limited V8 4WD 4Runner with about 215,000 miles. Got it for a decently low price, due to paintwork and the need for an A/C Compressor replacement. Called a few shops, most were $700 and up for the repair, I did not have that extra cash.

I then researched and researched everything about the whole thing. I ordered this compressor off of amazon.


A simple O-Ring box for any size for job and future, being as hoses are different sizes.

And a new Reciever Drier with Dessicant Element

Tools also used.
14mm socket, with 3/8 ratchet
Serpentine Belt Tool (Rent from AutoZone, $30, Get your money back)
2 Ton Jack Stands, used bottle jack from trunk
12mm socket (1 Bolt)
Universal joint socket (For hard to reach angles)
Ratchet Extensions
Penetrating Spray, WD40 or Acetone and Automatic Transmission Fluid mix
As always, elbow grease

GET VEHICLE DRAINED OF REFRIGERANT PRIOR TO ANY OF THIS, IT IS HARMFUL TO YOU AND THE ENVIRONMENT, YOU WANT ALL YOUR FINGERS AND HANDS.

Steps
1. Jack car up, place jack stands, get tire off

2. remove ground wire holding piping in, push it out the way

3. Open hood, using diagram on hood, find Serpentine belt tensioner, turn to the left with rented tool, slip belt off only the compressor.

4. Remove High side and low side hoses from compressor, place paper towel inside the hose itself to not contaminate

5. Remove bolts (3 BOLTS) with the logo on the almost like an "8" on them also shown in the picture below. Dont forget bracket nut below, this is key as it wont come out unless it loosened, around oil filter area under vehicle.

6. It SHOULD be loose and able to be moved around and just slide it out of the wheel well. If not, you forgot a step, check diagram again.

7.Put new O Rings on hoses and on left side of radiator use large size allen (mine dont have sizes so I dont know, my apologies) to open up and replace the dessicant element, just slide the new one in.

8. Next feed new compressor in and position into place on the bracket for a slight hold to hand tighten the bolts in just to sit. then if you have a torque wrench, do it to 14Ft-lbs, but if not just tighten.

9. Remove paper towels, and put hoses back on, they are different sizes so they only go in one of them, use washer and nut provided from kit to keep tight.

10. Put Serpentine belt back on using the opposite of the removal of it. Best to do with two people.

11. Refill refrigerant (find out how much on your hood) yourself, or pay a shop to do it. I did not do this myself.

Extra Note - If you get a bad mildew smell when you turn your A/C on. Turn A/C on high and turn off Recirculate air and spray lysol dissifectant spray into the front vents UNDER HOOD for like 30 seconds and then repeat 10 mins later just to fully cycle through system.


Hope I saved you as much as I did myself.
 

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I will definitely use this in the near future! I have quite the rattle coming from the compressor when I'm stopped.

Wish I could have afforded it when I did my timing belt 2 weeks ago...plenty of open space then.
 
So I just bought an 05 Limited V8 4WD 4Runner with about 215,000 miles. Got it for a decently low price, due to paintwork and the need for an A/C Compressor replacement. Called a few shops, most were $700 and up for the repair, I did not have that extra cash.

Hope I saved you as much as I did myself.

Hey BigMike.
Just ordered my replacement.

How long did this project take you?

I don't have easy access to a garage/driveway (in Chicago) so have to do it on my street/block. If it only takes a couple hours, then I'm comfortable just putting it up on stands outside my apartment. Otherwise I'll have to find a friends garage to tackle this one.

Thanks again for the write-up!
 
my ac compressor makes a groaning sound. i removed the belt and spun the clutch by hand, it turned freely, i am afraid if the compressor is on its last legs, and about to grenade soon, should i pre-emptively replace it, to save me the cost of condenser and the like, should it grenade in service??.
it chills ok though, however needs topping up every 6 to 10 months, tech suspects the compressor shaft seals may be leaking
 
Hey BigMike.
Just ordered my replacement.

How long did this project take you?

I don't have easy access to a garage/driveway (in Chicago) so have to do it on my street/block. If it only takes a couple hours, then I'm comfortable just putting it up on stands outside my apartment. Otherwise I'll have to find a friends garage to tackle this one.

Thanks again for the write-up!


Sorry for the late response but I was just 15 at the time and my first job tackling anything on my car. So it took awhile but with that diagram you should be all good to go because you know what you need to get out and how to do it I went in blind
 
my ac compressor makes a groaning sound. i removed the belt and spun the clutch by hand, it turned freely, i am afraid if the compressor is on its last legs, and about to grenade soon, should i pre-emptively replace it, to save me the cost of condenser and the like, should it grenade in service??.
it chills ok though, however needs topping up every 6 to 10 months, tech suspects the compressor shaft seals may be leaking


Mine was out for a pretty long time and it ran fine and there wasn’t any problems in other sections of my ac lines or condenser but if you know it’s gonna fail and you can see that I don’t see why not
 
I believe so, I did not add any oil to it. I got mine from Rockauto way back when, but I can't recall which brand I went with. I want to say ACDelco but I could be mistaken.
 
Hey, I'm about to replace my compressor as well and was wondering if the one you bought came pre-oiled?

Curious, what is the reason your comp is getting replaced? I ask because the compressors rarely fail but the clutches do wear out and stop grabbing, and that is a replaceable item w/o removing the comp from the engine.
 
Turned on my AC one day and heard a nasty grinding noise; it stopped when I turned AC off. Planning on changing the serpentine belt soon, so when I do, I will spin all the pulleys and test for that grinding noise again. How can I test if it's just the clutch and not the compressor?
 
Perhaps I am wrong, but doesn't the refrigerant act as lubricant for the compressor?
A bit of dirt could clog the expansion valve. I would be careful handling the disconnected components. Probably good idea to wask the entire area before starting the job.
 
Turned on my AC one day and heard a nasty grinding noise; it stopped when I turned AC off. Planning on changing the serpentine belt soon, so when I do, I will spin all the pulleys and test for that grinding noise again. How can I test if it's just the clutch and not the compressor?

If compressor is eating itself, it is a good idea to replace before it fails and circulates debris throughout the system. In case of comp failure, book calls for complete flush of lines and condenser replacement to ensure no debris remains. This debris will shorten the life of the replacement unit.
 
Curious, what is the reason your comp is getting replaced? I ask because the compressors rarely fail but the clutches do wear out and stop grabbing, and that is a replaceable item w/o removing the comp from the engine.

sry sent my reply to the thread and not you. I'm new to this forum.
 
sry sent my reply to the thread and not you. I'm new to this forum.

No problem, I got your info.

Your plan is good, spin the clutch/pulley portion of the compressor after you remove the belt. If the grinding noise is present, then it's the clutch/pulley. This can be removed by removing the bolt in the middle. Just do a YT search for videos. I'm not sure if there's room in the engine bay to do this while the compressor is still attached to the engine. The clutches can be purchased easily.

If the clutch spins freely, then it's the compressor itself making the awful noise, and you'll need to swap out with a new/reman a/c compressor.
 

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