waterpump/AC compressor - Toyota Yaris Forums

yaris9876 · 12-20-2009, 05:34 PM

are there any pics of how the waterpump and the AC compressor sit down in there..?? 1.5Lt... 07 Hatch manual 5 speed
it looks like there is the crank pulley on the bottom.. then whatever that bigger unit pulley.. then the tensioner and then the alternator.
whats the real story/pics?? Is the AC and the water pump the same pulley??
If I decided to run in the winter time bypassing the AC with a smaller serpentine belt,..is this possible
or is that unit down there a combo unit that has other uses..??
Would I lose heater if I did that..???
Anyone who has done that.. what size belt did you use..??

CTScott · 12-20-2009, 05:57 PM

The AC compressor has its own pulley. There is a shorter belt for ones without AC. I know this first hand, as Crashy's AC compressor was cracked, so I pulled it off and got the shorter length belt from Napa (I just asked for an alternator belt for a 2008 Yaris, with no AC). The Toyota part number for the non-AC one is: 90916-02499.

You wouldn't lose the heater by bypassing it, but since the AC has an electric clutch, when it is not being used it really doesn't offer any resistance. So, there is very little to be gained by it, other than saving some wear on the compressor's bearings.

yaris9876 · 12-20-2009, 06:09 PM

I have 170K on it. It looks like it could be one of many things. The timing chains and tensioners are known for going out.. and this thing has 170K...way past the point where you are going to start to run into problems....
my dilemma...is it worth doing any substantial work on this thing...??
Its been good but useless to haul anything and I have a PU and dont really need both
even know the mileage is great... but how could I sell it..???
If I was to service it at this point,170K, I should look at the entire front..
replace timing chain/tensioner , rebuild water pump,alternator,VVTI solenoid, O2 sensor,
at least these things...what do you think a Toyota dealer in western USA would want to do all of this.???? I couldnt hope to sell it without fixing these.....
by the way, anyone know what a vvti solenoid costs at the dealer....??.

CTScott · 12-20-2009, 06:18 PM

Quote:

Originally Posted by yaris9876

I have 170K on it. It looks like it could be one of many things. The timing chains and tensioners are known for going out.. and this thing has 170K...way past the point where you are going to start to run into problems....
my dilemma...is it worth doing any substantial work on this thing...??
Its been good but useless to haul anything and I have a PU and dont really need both
even know the mileage is great... but how could I sell it..???
If I was to service it at this point,170K, I should look at the entire front..
replace timing chain/tensioner , rebuild water pump,alternator,VVTI solenoid, O2 sensor,
at least these things...what do you think a Toyota dealer in western USA would want to do all of this.???? I couldnt hope to sell it without fixing these.....
by the way, anyone know what a vvti solenoid costs at the dealer....??.

The list for it is about $86.

With all the work you are looking at, it would probably be cheaper to pick up a low mileage engine from a wreck. Off eBay, they can readily be picked up for $400, and occasionally off ebay or Craigslist, you'll see them going for as little as $200.

Black Yaris · 12-20-2009, 06:25 PM

is there something specific wrong with your car? or you just looking to do this as maintenance?

either way I was take it to a local mechanic shop instead of the dealership. Local guys can preform these general task just as well as a Dealership, but at a much lower cost.

So long as you change your fluids at recommended intervals (oil every 5k, trans fluid every 30k, antifreeze every 100k) you should not have any major troubles

there are a few members here that have well over 300k on the clock

12-20-2009, 05:34 PM	#1
yaris9876 Drives: yaris hatch 07 640K original m Join Date: Mar 2007 Location: usa Posts: 285	waterpump/AC compressor are there any pics of how the waterpump and the AC compressor sit down in there..?? 1.5Lt... 07 Hatch manual 5 speed it looks like there is the crank pulley on the bottom.. then whatever that bigger unit pulley.. then the tensioner and then the alternator. whats the real story/pics?? Is the AC and the water pump the same pulley?? If I decided to run in the winter time bypassing the AC with a smaller serpentine belt,..is this possible or is that unit down there a combo unit that has other uses..?? Would I lose heater if I did that..??? Anyone who has done that.. what size belt did you use..??

12-20-2009, 06:25 PM	#5
Black Yaris der Zeck View User's Garage Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006 Location: Toledo, OH Posts: 5,231	is there something specific wrong with your car? or you just looking to do this as maintenance? either way I was take it to a local mechanic shop instead of the dealership. Local guys can preform these general task just as well as a Dealership, but at a much lower cost. So long as you change your fluids at recommended intervals (oil every 5k, trans fluid every 30k, antifreeze every 100k) you should not have any major troubles there are a few members here that have well over 300k on the clock __________________

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12-20-2009, 05:57 PM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	The AC compressor has its own pulley. There is a shorter belt for ones without AC. I know this first hand, as Crashy's AC compressor was cracked, so I pulled it off and got the shorter length belt from Napa (I just asked for an alternator belt for a 2008 Yaris, with no AC). The Toyota part number for the non-AC one is: 90916-02499. You wouldn't lose the heater by bypassing it, but since the AC has an electric clutch, when it is not being used it really doesn't offer any resistance. So, there is very little to be gained by it, other than saving some wear on the compressor's bearings.

12-20-2009, 06:09 PM	#3
yaris9876 Drives: yaris hatch 07 640K original m Join Date: Mar 2007 Location: usa Posts: 285	I have 170K on it. It looks like it could be one of many things. The timing chains and tensioners are known for going out.. and this thing has 170K...way past the point where you are going to start to run into problems.... my dilemma...is it worth doing any substantial work on this thing...?? Its been good but useless to haul anything and I have a PU and dont really need both even know the mileage is great... but how could I sell it..??? If I was to service it at this point,170K, I should look at the entire front.. replace timing chain/tensioner , rebuild water pump,alternator,VVTI solenoid, O2 sensor, at least these things...what do you think a Toyota dealer in western USA would want to do all of this.???? I couldnt hope to sell it without fixing these..... by the way, anyone know what a vvti solenoid costs at the dealer....??.