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Car Forum / Jeep / July 2004Flushing the cooling system?
Can I use one of those backflushing kits with my 93 Cherokee 4.0? Will that valve (I think I read it was a valve) that the heater hoses connect to interfere with flushing this way? Thanks.  Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K "The examined life is no picnic." - Robert Fulghum > Can I use one of those backflushing kits with my 93 Cherokee 4.0? Will > that valve (I think I read it was a valve) that the heater hoses > connect to interfere with flushing this way? > > Thanks. Here's a link to a picture of the valve. http://tinyurl.com/38cm2 Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K "The examined life is no picnic." - Robert Fulghum Pat Blank did pass the time by typing: > Pat Blank wrote : > [quoted text clipped - 7 lines] > > http://tinyurl.com/38cm2 Interesting. A heater core bypass valve. Haven't seen those in a looooong time. All it does is bypass the flow to your heater core when the heat isn't on. It would keep the flush from going throug your heater core unless you had the heat turned on. If all your after is the radiator and block it won't bother anything. IF you want to flush the heater core too, just turn the heat on. SignatureDougW > Interesting. A heater core bypass valve. Haven't seen those > in a looooong time. All it does is bypass the flow to your [quoted text clipped - 4 lines] > radiator and block it won't bother anything. IF you want to > flush the heater core too, just turn the heat on. Thanks Doug. I want to flush everything. Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K "The examined life is no picnic." - Robert Fulghum > Interesting. A heater core bypass valve. Haven't seen those > in a looooong time. All it does is bypass the flow to your [quoted text clipped - 4 lines] > radiator and block it won't bother anything. IF you want to > flush the heater core too, just turn the heat on. Alright. While attempting to get the top heater hose off the valve, the hose fitting snapped like a twig. So I had to remove the valve and run both heater hoses to the firewall. Will this be a problem? I also plugged the vacuum line going to the valve, is that the proper thing to do? Please forgive me for being a PITA. :/ Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K 235s "The examined life is no picnic." - Robert Fulghum Pat Blank did pass the time by typing: > Alright. While attempting to get the top heater hose off the valve, the > hose fitting snapped like a twig. So I had to remove the valve and run > both heater hoses to the firewall. Will this be a problem? Nope. Not near as much as having that snap while you were on the road. > I also > plugged the vacuum line going to the valve, is that the proper thing to > do? Yep. Otherwise you will have a vac leak and that can cause all sort of wonky things. > Please forgive me for being a PITA. :/ Ok. :) ..seriously.. It's failure to ask questions that is bad. :) SignatureDougW > Pat Blank did pass the time by typing: > [quoted text clipped - 4 lines] > Nope. Not near as much as having that snap while you were on the > road. Might I also assume that the inside of the Jeep will get a bit warm without the valve in there? If that is the case I'm thinking of just looping the hose from the thermostat around to the water pump until I can replace the valve. What do you think of that idea? Thanks. Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K 235s "The examined life is no picnic." - Robert Fulghum If you don't feel like replacing the valve, know that you could let it flow all the time and be just like the newer cars. Or you buy a hand operated valve for it to make sure you car is not heated in the summer: http://www.billhughes.com/heatHoseValve.jpg God Bless America, ßill O|||||||O mailto:LWHughes3rd@aol.com > Might I also assume that the inside of the Jeep will get a bit warm > without the valve in there? If that is the case I'm thinking of just [quoted text clipped - 8 lines] > > "The examined life is no picnic." - Robert Fulghum Pat Blank did pass the time by typing: >> Pat Blank did pass the time by typing: >> [quoted text clipped - 9 lines] > looping the hose from the thermostat around to the water pump until I > can replace the valve. What do you think of that idea? It could get a bit warm. One of my coworkers build a similar system out of two brass valves for his old pickup. <===========(valve)=========< || Core (valve) || >===========================> SignatureDougW > > Interesting. A heater core bypass valve. Haven't seen those > > in a looooong time. All it does is bypass the flow to your [quoted text clipped - 14 lines] > > -- Too bad you missed my post about the valve defaulting 'open' with no vacuum... Those valves are brittle. A friend snapped his while changing plugs. I used a deep 1/2 socket to put the two hose ends together to get him by until he got a new valve. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > Too bad you missed my post about the valve defaulting 'open' with no > vacuum... [quoted text clipped - 3 lines] > I used a deep 1/2 socket to put the two hose ends together to get him > by until he got a new valve. I read your post Mike, but I had to change my heater hoses, so there was no way to get around messing with the valve. I wish I would have just cut the damn hoses off. <sigh> Live and learn and learn and learn... Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K 235s "The examined life is no picnic." - Robert Fulghum > > Too bad you missed my post about the valve defaulting 'open' with no > > vacuum... [quoted text clipped - 9 lines] > > -- The one I saw was basically rotten, it just crumbled. Mike Been there, broke that. $15 for XJ at Advanced Auto. Plastic. Tom > > Interesting. A heater core bypass valve. Haven't seen those > > in a looooong time. All it does is bypass the flow to your [quoted text clipped - 12 lines] > > Please forgive me for being a PITA. :/ > Been there, broke that. $15 for XJ at Advanced Auto. Plastic. > > Tom Well, looks like the price has gone up to $23 according to the website. I'll give them a call to see if there is a difference. Regards. Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 235s 171K "The examined life is no picnic." - Robert Fulghum That valve defaults in the open position with no vacuum applied in my 88. Don't forget the block drain, it is under the exhaust near the rear of the block. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > > Can I use one of those backflushing kits with my 93 Cherokee 4.0? Will > > that valve (I think I read it was a valve) that the heater hoses [quoted text clipped - 11 lines] > > "The examined life is no picnic." - Robert Fulghum > That valve defaults in the open position with no vacuum applied in my > 88. > > Don't forget the block drain, it is under the exhaust near the rear of > the block. Do I have to open that drain even with using the backflush kit? Signaturepat - pat(underscore)blank(at)hotmail(dot)com 93 XJ 2DR 2WD 4.0L 171K "The examined life is no picnic." - Robert Fulghum > > That valve defaults in the open position with no vacuum applied in my > > 88. [quoted text clipped - 6 lines] > -- > pat - If you only want to clean the rads out, then no. If you want to clean the whole works out, then yes. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Can't you get a ticket for flushing radiator coolant into the street now? >Can I use one of those backflushing kits with my 93 Cherokee 4.0? Will >that valve (I think I read it was a valve) that the heater hoses connect >to interfere with flushing this way? > >Thanks. -Bill (remove "botizer" to reply via email) It is a hazardous waste. I watch it because we can't keep the neighborhood domestic animals from drinking it and dying a horrible death, I turn it in with my paint waste, run by my local trash company. I used to dump it in with my oil at Kragen's, just to get rid of it. Not telling them of course. They used to pump it for free, and pay me twenty cents a gallon. God Bless America, ßill O|||||||O mailto:LWHughes3rd@aol.com http://www.billhughes.com/ > Can't you get a ticket for flushing radiator coolant into the street now? |
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