ON Topic: 88 Supra overheating...
in [Toyota]
|
Prev: Groups want FCC to police hate speech
Next: Where's the monthly number of who posted the mostest?
From: clare on 5 Jun 2010 23:15 On Sat, 05 Jun 2010 21:16:00 -0400, John <itsnotme(a)here.com> wrote: >On 6/2/2010 11:46 PM, Hachiroku $B%O%A%m%/(B wrote: >> I know there are techs in all three groups, hence the cross posting.... >> >> The other day, the day it got clobbered by the storm, it was 96 degrees in >> Keene NH. That's ~35 miles from home. Since it was nice I decided to take >> the roof off the Supra and use it for my daily rounds. >> >> Everything was fine until about mile 27, and then I noticed the temp >> climbing. By the time I got to my first stop it was almost to the red. >> >> It behaved the rest of the time in Keene, and then, about 27 miles later >> it was heating up again. >> >> I opened the radiator and it was down about a quart, but the bottle was on >> "low". I filled the radiator and let it sit for a couple rainy days. >> >> Today was bright and sunny and about 86 degrees, so, since the roof >> doesn't *quite* fit as well after making like a kite it sits in the trunk, >> and again the ~35 mile trip to Keene. 27 miles up the road...almost in the >> red again. When I got to where I pick up my parts I let it cool and then >> opened the hood, and in front of the radiator the shroud attached to the >> bottom of the car was wet, and the overflow bottle was FULL. Spring a >> leak? I patched one split in the plastic top a couple years ago, and it >> had sprung again. When I filled it I did not add any to the bottle. >> >> It ran OK for the few stops I had, then back home...27 miles... >> >> When I got home I left the heat on and would start it, ramp the non >> eletric fan up and shut it down. After about 1/2 an hour letting it sit, I >> went out and gingerly removed the radiator cap. The cap was COOL! Again... >> down about a quart in the readiator, but this time the bottle was full. >> >> I am guessing the radiator is plugged up. It is the original 22 year old >> radiator, so I ordered a new one. From Toyota? HAH! Even though they last >> +20 years, they are also FOUR HUNDRED AND EIGHTY SEVEN DOLLARS!!! >> >> SPI, $130. It may only last seven years, but then, how much longer will >> the car last? (Although it is in pretty good shape...) >> >> BTW, I had the SAME THING happen to my '89 Subaru GL coupe, and after >> replacing the radiator I don't even need the fan, the thing runs so cool. >> >> >T-Stat? Actually, that is the major cause of overheating that results in blown head-gaskets on Toyota M Series engines
From: Hachiroku ハチロク on 6 Jun 2010 00:44 On Sat, 05 Jun 2010 16:08:45 +1200, bugalugs wrote: > On 5/06/2010 10:23 a.m., Hachiroku ハチロク wrote: >> On Thu, 03 Jun 2010 22:52:38 -0500, Ray O wrote: >> >> >>> "Hachiroku ????"<Trueno(a)e86.GTS> wrote in message >>> news:dZFNn.21379$7d5.12341(a)newsfe17.iad... >>>> On Wed, 02 Jun 2010 23:04:28 -0500, Ray O wrote: >>>> >>>> >>>>> "Hachiroku ????"<Trueno(a)e86.GTS> wrote in message >>>>> news:JAFNn.35974$h57.25681(a)newsfe22.iad... >>>>>> I know there are techs in all three groups, hence the cross >>>>>> posting.... >>>>>> >>>>>> The other day, the day it got clobbered by the storm, it was 96 >>>>>> degrees in Keene NH. That's ~35 miles from home. Since it was nice I >>>>>> decided to take the roof off the Supra and use it for my daily >>>>>> rounds. >>>>>> >>>>>> Everything was fine until about mile 27, and then I noticed the temp >>>>>> climbing. By the time I got to my first stop it was almost to the >>>>>> red. >>>>>> >>>>>> It behaved the rest of the time in Keene, and then, about 27 miles >>>>>> later it was heating up again. >>>>>> >>>>>> I opened the radiator and it was down about a quart, but the bottle >>>>>> was on "low". I filled the radiator and let it sit for a couple >>>>>> rainy days. >>>>>> >>>>>> Today was bright and sunny and about 86 degrees, so, since the roof >>>>>> doesn't *quite* fit as well after making like a kite it sits in the >>>>>> trunk, and again the ~35 mile trip to Keene. 27 miles up the >>>>>> road...almost in the red again. When I got to where I pick up my >>>>>> parts I let it cool and then opened the hood, and in front of the >>>>>> radiator the shroud attached to the bottom of the car was wet, and >>>>>> the overflow bottle was FULL. Spring a leak? I patched one split in >>>>>> the plastic top a couple years ago, and it had sprung again. When I >>>>>> filled it I did not add any to the bottle. >>>>>> >>>>>> It ran OK for the few stops I had, then back home...27 miles... >>>>>> >>>>>> When I got home I left the heat on and would start it, ramp the non >>>>>> eletric fan up and shut it down. After about 1/2 an hour letting it >>>>>> sit, I went out and gingerly removed the radiator cap. The cap was >>>>>> COOL! Again... down about a quart in the readiator, but this time >>>>>> the bottle was full. >>>>>> >>>>>> I am guessing the radiator is plugged up. It is the original 22 year >>>>>> old radiator, so I ordered a new one. From Toyota? HAH! Even though >>>>>> they last +20 years, they are also FOUR HUNDRED AND EIGHTY SEVEN >>>>>> DOLLARS!!! >>>>>> >>>>>> SPI, $130. It may only last seven years, but then, how much longer >>>>>> will the car last? (Although it is in pretty good shape...) >>>>>> >>>>>> BTW, I had the SAME THING happen to my '89 Subaru GL coupe, and >>>>>> after replacing the radiator I don't even need the fan, the thing >>>>>> runs so cool. >>>>>> >>>>>> >>>>> Replace the cap while you're at it. >>>> >>>> I think it comes with one. >>>> >>>> I was thinking about that, but the cap is openeing up and letting the >>>> coolant flow into the bottle. >>>> >>>> The coolant I saw in the shroud was the stuff that was being purged >>>> out of the bottle... >>>> >>>> I think I might actually get a real Toyota cap, if it fits. They're >>>> only $11... >>>> >>>> >>> A bad cap will open too soon so the cooling system doesn't maintain >>> pressure, and if the cooling system doesn't maintain pressure, the >>> boiling temp goes down, more coolant gets pushed out, air gets in, and >>> temps rise. >>> >>> A blown head gasket can allow combustion gases into the coolant, which >>> pushes coolant out, and temps rise. >>> >>> Look for oil in the coolant, either in the radiator or a milkshake >>> appearance in the oil. Either symptom can indicate a BHG. If the >>> coolant and oil are pristine, then you have a leak somewhere in the >>> cooling system - radiator, hoses, cap, or heater core. >>> >>> While you're poking around make sure coolant isn't weeping or leaking >>> from the timing cover, a sign of a leaking water pump. >> >> The coolant in the bottle looked OK. The coolant in the >> radiator...couldn't be seen. It must have blown a lot of it out. Last >> time it took a quart. >> >> I have a new SPI radiator (I know, I know, but it was $123 compared to >> $487!) so I'll remove the rad, drain and flush the cooling system, and >> then replace and refill, and cross my fingers... >> >> And, of course, after being nice yesterday and today, it's going to rain >> all weekend, and then be really nice for the next four days after... >> >> > Haven't you heard that old question: > > What do you get after two days of rain? > > Monday. But it didn't! I looked for tools, opened the hood. Looked for more tools, undid the bolts holding the shroud on the bottom. Found some tools, undid the hoses. Then had a coffee and a cig, undid some more bolts, looked for more tools, sprayed the bolts with penetrating oil, had another cig, undid the shroud, and of course, broke an ear off it removing it, yanked the old one, put in the new one, went grocery shopping, redid the hoses (after chanting "replace the bottom hose first" 50 times), filled it, had another cig and coffee and then had supper. Going to get a t-stat and cap from Toyota Monday, and then test it out. > >> BTW, I haven't checked the oil yet. I'll do that tomorrow. >> >> >>
From: Hachiroku ハチロク on 6 Jun 2010 00:47 On Sat, 05 Jun 2010 02:52:32 +0000, Tegger wrote: > > So, uh, have you taken a whiff of the expansion bottle yet? It only takes > seconds to do that, and the result could change the entire tendency of > this thread... So I took it out of the garage, moved it to my work apron out back, had it running for about 7 minutes. Opened the bottle and took a good whiff... What does it mean if it smells like exhaust...? :(
From: jim beam on 6 Jun 2010 01:50 On 06/05/2010 08:13 PM, clare(a)snyder.on.ca wrote: > On Sat, 05 Jun 2010 07:05:42 -0700, jim beam<me(a)privacy.net> wrote: > >> On 06/04/2010 05:56 PM, clare(a)snyder.on.ca wrote: >>> On Thu, 03 Jun 2010 20:28:54 -0700, jim beam<me(a)privacy.net> wrote: >>> >>> >>>> >>>> get one of those chemical leak test kits. the pH of the coolant changes >>>> if the gasket is leaking - provided you haven't masked it by changing >>>> the coolant too recently. >>> It's not the PH it is checking >> >> yes it is dude. the solution is classic bromothymol blue - starts blue, >> turns yellow if the gasket is failing. >> >> http://en.wikipedia.org/wiki/Bromothymol_blue >> >> [now you can reconsider paying $50 for a bottle of reagent that only >> really should be costing you a couple of bucks.] >> >> works because the CO2 in combustion product [about 15%] bubbles through >> the coolant, dissolves and forms carbonic acid, and reduces the pH. >> >> "solutions of carbon dioxide in water" >> http://en.wikipedia.org/wiki/Carbonic_acid >> >> >>> - so having changed the coolant 2 >>> weeks ago will have NO effect on the test. >> >> two weeks, true. but having changed it sooner can mask the problem, >> particularly in early stages where gas leakage can be slight. > > Not the stuff I've used over the last 30 years. It was accurate even > when the pH was way high. > > OK - I checket out your reference - it is NOT checking the pH of the > coolant. you can use it either way. if the system is bubbling, then the gasket is leaking. and don't need a reagent to tell you that! otoh, if you use the reagent to test the coolant, and you can, then you have your result. > It is detecting CO2 by bubbling air from the cooling system > through the reagent (which you have correctly identified) and if the > air contains CO2 it is absorbed in the water the reagent is disolved > in, forming carbonic acid, and changing the colour of the fluid. > > From your reference- > Bromothymol blue is mostly used in measuring substances that would > have relatively low acidic or basic levels (near a neutral pH). It is > often used in managing the pH of pools and fish tanks, and for > measuring the presence of carbonic acid in a liquid. > > A common demonstration of BTB's pH indicator properties involves > exhaling through a tube into a neutral solution of BTB. As carbon > dioxide is absorbed from the breath into the solution, forming > carbonic acid, the solution changes color from green to yellow. Thus, > BTB is commonly used in middle school science classes to demonstrate > that the more that muscles are used, the greater the CO2 output. it's also used for testing radiator leaks at $50 per quart as opposed to $5. > > From the instructios for the leak detector kit- > To do the test, add the blue detector fluid to the (block-tester) > plastic container according to the directions, and place it onto the > radiator filler neck. The squeeze bulb is placed on top of the > reservoir and squeezed repeatedly (Some block testers, have a tube > that connects to a vacuum line instead of a squeeze bulb). Squeezing > the bulb will draw air from the radiator through the test fluid. Block > tester fluid is normally blue. Exhaust gases in the cooling system > will change the color of the fluid to yellow, indicating a combustion > leak. If the fluid remains blue, exhaust gases were not present during > the test. The vehicle should be started and at operating temperature > before performing the test. Vehicles with head gasket leaks may > overheat, and purge hot water and steam out of the radiator. Perform > this test, at your own risk, and do not do the test, unless you are > experienced and are wearing clothing and equipment to protect you from > burns, or injury. -- nomina rutrum rutrum
From: Tegger on 6 Jun 2010 13:05
=?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> wrote in news:iLFOn.137251$0M5.33520(a)newsfe07.iad: > On Sat, 05 Jun 2010 02:52:32 +0000, Tegger wrote: > >> >> So, uh, have you taken a whiff of the expansion bottle yet? It only >> takes seconds to do that, and the result could change the entire >> tendency of this thread... > > So I took it out of the garage, moved it to my work apron out back, > had it running for about 7 minutes. Opened the bottle and took a good > whiff... > > What does it mean if it smells like exhaust...? :( > > > > Nothing good. -- Tegger |