Sigh...take a look at this link...http://www.hondapartsnow.com/parts-list/1989-honda-prelude-2dr_2_0si_4ws-ka-5mt/water-pump.html
I sighed because these pictures have been posted more times than I care to think about. It gives a clearer indication of where each hose goes than a picture of a filthy engine bay can show. I'm sorry if I offended you, but if you're going to make threads with these types of questions you have to grow a thick skin. Please post these types of questions in the newbie thread, that's what it's there for.please dont sigh me, i have that picture. it does not show me where they go to from there in the bay. which one goes to heater valve? which one goes to the straight pipe on the heater?
what i need to know now is, is it #25 to the valve on the front of the IM. then #21 to the #3 pipe?#17 is the metal rear water pipe. #25 and #27 are the ones that are about 1/4" hose in diameter and go to the iacv.
another info is if you look at the nipple pointing horizontally from metal water pipe directly below straight hose #22 is where the other heater hose hooks up. It is the output hose from the heater core and goes from the firewall heater core nipple to the metal water pipe there and through the metal pipe to the block and water pump. This connection is a bitch to replace with the vss installed. It is right next to it tbelt side. #22 hose is the bottom hose in my picture of the pot metal "Y" connector.
Here is the heater hose diagram. It is found under heater. Listed as water valve and hose/pipe.
#12 is the right angle hose I mentioned going to the head. #14 is the other heater hose that goes from the heater core nipple at firewall to the rear pipe like mentioned above. (by vss)
thank you! this is perfect! im in florida so theres no testing but im running the stock computer so idk if i can remove those without codes or idle issuesHere is what I've got as a stock example for the smaller 3/8" hoses:
Most people would be better served by simplifying the system like this:
You don't really need the ones going to the EACV or throttle body. Unless you live in a climate that requires a block heater, then maybe think of keeping them.
You wont have any codes or idle issues if you skip the TB and EACV. They also don't care about order or coolant flow direction either so you can just hook them up whichever way works best with straight hose.thank you! this is perfect! im in florida so theres no testing but im running the stock computer so idk if i can remove those without codes or idle issues
what about the egr? the dude who had the car before me couldnt remove it so he cut it... idk if i can have it welded back or whatYou wont have any codes or idle issues if you skip the TB and EACV. They also don't care about order or coolant flow direction either so you can just hook them up whichever way works best with straight hose.