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Hello Yotatech!, first post, long time lurker.
My son and I have a 94 Toyota Pickup, 3vz, 4x4.
decided to change the timing belt, water pump and give him back A/C. We bought the truck 4 years ago with the A/C compressor belt disconnected,missing idler pulley, decided it was time to get some cool air.
I replaced the compressor, but the pulleys don't line up, the compressor pulley is about 1/2 inch back of the idler and crank pulley. The idler and crank do line up. Put the original compressor back in the truck, it also has the same alignment problem, not saying the right compressor was ever in there( prior owner took a few shortcuts)
I have tried to search, and cross reference part numbers from Partsouq.
It seems there are 2 different compressors for our truck? pre 1/94 and post.
Can someone tell me what the right compressor for this truck is? Do I have something installed incorrect?
Figuring out how to post picks now
Appreciate your help and assistance
Steve
A/C is the middle grove on the crank pulley. It looks like it lines up with the middle pulley? The difference in the compressors are the pre 94 used R22 refrigerant and the post 94 used R134A. There should be a sticker some were that says what refrigerant it uses and how much.
Thanks for the quick reply
I was hoping for some physical differences in the compressors - ugg.
I have a better picture, you can see the idle pulley lines up with the center grove on the crank pulley
, but the compressor is about 1/2 inch back.
Used pump? Did it come with pulley or did you replace with your existing? I'd suggest going to https://toyota-usa.epc-data.com/ and looking up the schematic that relates to your frame number, pulling off the front clutch, pulley etc, and making sure everything is there. There are a couple spacer washers that should be in there although I forget exactly how they relate to the pulley vs the clutch. Part #s are Denso 4711165 for R134a and Denso 4711145 for R12 , you could find out the Toyota part #s on the link above if you want them, just click around until you find frame numbers for the desired year. AC is under electrics.
JBTVT- The truck came with a compressor mounted, but no idler pulley and one of the mounting bolts was snapped off. I dont know if it was original.
Thank you for the link, it got me thinking
- this only bolt together one way, new compressor and old compressor match up, new compressor matches denso 4711145.
The mounting bracket - removed it and on the back has number - 146260-934. The Toyota site says part number 88431-35181, not sure the number on the part is the actual part number. Possible that I have the wrong mounting bracket?
Possible, or wrong compressor, or missing shims. Sure the idler lines up with crank? I don't see any difference between the compressor images doing a quick search TBH, but they could just be using stock images anyway so hard to say. R134a is less efficient than R12 so ifthere is a size difference and I had to guess, I'd say later compressors would be larger. My 90 uses R12, so most likely the 4711145 pump, and according to Toyota EPC it takes the 88431-35121 bracket. My bracket vs your EPC part number on Ebay - https://www.ebay.com/itm/A-C-Compres...6/202867847582 and https://www.ebay.com/itm/TOYOTA-4Run...-/253389631240 Don't see anything for the other number.
You might try downloading similar images of each and zooming each in/out until they're the same size between two reference holes on the block or something and seeing if one is longer, to get an idea if it would work better (I do similar sometimes to scale blueprints) or it might be another part number entirely... Old Toyotas, especially those built right around a transition period like yours is with AC are known to often not match the wiring diagrams for certain years so I wouldn't be surprised if yours wasn't exactly like the book says it should be. Though the exact build month should be on your door jamb sticker and might give you an idea.
Do you know how to cross reference the number stamped on the part with the toyota EPC?
Compressor - not sure how to check further.
Shims - Can you please explain further, I am looking at the parts diagrams and don't see shims, I will pull the cover off the compressor tomorrow.
Thank you for your assistance, really appreciate the help!
By shims I mean the washers that shim the clutch and/or pulley out, part number 88335-14020 on mine.
For the compressor you could take the part #s, or probably even just ask for a 90 and 95 year pump at an auto parts store and see what they have in stock or can order and then compare. Most here do same day delivery and free returns if you don't want the part, and even their store brand parts should be the same length as Denso (although wouldn't bet the farm on it) so you could see if it would work.
On brackets I mean you load each image up on your computer's photo app or MS Paint and zoom in or out until the distance between two bolt holes into the block is the same on each image, say 3" or whatever. Using a tape measure or ruler. Then you can measure overall length on each photo to see if one bracket is going to be longer than the other.
I don't know what the casting numbers mean. Sometimes it's a part number, sometimes it's absolutely meaningless, in my experience. At least to anyone outside the foundry
Last edited by jbtvt; 01-06-2020 at 06:38 PM.
Reason: add info
One thing to be aware of is that '94 4runners varied as to where the AC was installed. Some were factory installations in Japan, others were dealer installed after shipment to the US. The dealer installation was to avoid import taxes on "luxury" vehicles.
When I had to replace the compressor on my '94, one of the questions the parts guy asked was "factory or dealer installed". I had no idea which one I had, so I guessed factory and it fit. I don't know if there would have been a size difference or not, but the parts lookup system apparently thought it mattered.
01-05-2020, 05:05 PM
