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Re: water pump. how do i replace it? Is it a difficult...
You need a haynes repair manual .because to much to tell you in words . its not that hard on the v6 engine. but the 2.4 engine you have to be dealing with timing chain.see if you get a manual it has pictures and step to remove the water pump .i been working on cars for 20 years. i use manuals it saves you time and money.
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what was the worst about the pump?I don't know what that means? the no heat could be a clogged core, try to flush it in both directions and make sure water flows freely. As for the rough idle... is the car overheating or pushing out coolant? if so there could be head gasket issues?>?
No there no way way of knowing without replacing the timing belt, cylinder compression test at this point would not work due to valve's open at wrong time, this engine is a INTERFERENCE ENGINE, but you might get luckly where it did not damage valve's it's happen here at my repair shop, also you don't have to replace the water pump, it is not timing belt driven water pump
The water pump isnt hard to replce on your truck. Basicly, what you see is what you get. Drain the radiator first, then take off the fan, the serpentine belt, 4 small bolts on the pulley and the pump is fully exposed. Just make sure the old gaskets are gone and the mounting surfaces are clean and dry.
if this helps.. I had the 1998 model S70. the water pump was driven by the timing belt. you had to take the timing belt off just to replace the water pump. it was just a simple bolt on replacement. the only difficult issue is resetting the hydraulic tensioner on the timing belt. the hydraulic tensioner has to be completely taken off and compressed VERY SLOWLY in a vise. then insert a very hard drill bit or (special volvo tool) into a keeper hole, reinstall hydraulic tensioner onto car and reinstall timing belt.very quickly remove drill bit from keeper hole in tensioner and the tensioner snaps back out to put tension on belt. and you are done.
1 of 2 places , check to see if its running on your fan belt. if so its easy to replace. if you cant see it it means it located @ the timing belt, you will have to remove the timming cover and the timming belt, if you are willing to do so I can assist but it is difficult if you have no experiace. Why do you want to replace what seems to be the problem?