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First Highway test of the 60- Overheated.

Discussion in '60-Series Wagons' started by Doc, Aug 8, 2004.

  1. Doc

    Doc

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    My overheated 60- I need a radiator, suggestions?

    I've been drivin' my 'new to me' 1987 FJ60 back and forth to work, and some short trips on the side for about three months now. Never really had the temp gauge move past 1/3.

    Yesterday the wifey and I decide to try an extended road trip in it. 4 hours- 250 miles or so... Anyway, 20 miles into the trip the temp starts climbing. I turned off at the nearest exit and started back home.. and it kept climbing. I had to open the windows and blast the heat to keep it from pegging in the red. Slowing down actually made the problem worse. So I kept it at 50 mph and crossed my fingers.

    The PO odviously neglected the truck. This is just one more sign. The coolant is green- and who knows if he flushed before he filled, probobly not.

    So my plan of attack is this:

    flush and fill with toyota red, check the thermostat and fan clutch.

    Or should I just bite the bullet and buy a new rad?

    Is there a good chemical I can add to a mostly water solution to really clean out those coolant passages? I could flush the green out, fill back with water and something like 10N NaOH (super basic but might eat the hoses?)

    It was maddening to have to turn around on the first big test of this truck.

    Good news- got the new tranny clutch installed last week. I had no idea HOW much the old one was slipping until the new one went in. I find myself driving too fast now, because I don't have to be careful with the gas pedal.
     
    Last edited: Aug 9, 2004
  2. Cruiserdrew

    Cruiserdrew SILVER Star

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    I would replace the thermostat(don't forget the upper gasket) and fan clutch for sure, and get a new radiator cap from Toyota. These are easy fixes and less than $200 total. You won't have to drain the system. If it still overheats, get a new radiator. Nothing will kill a Cruiser quicker than a bad cooling system.
     
  3. cahilc

    cahilc

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    Yup, forum search on "Muriatic Acid". Caveat emptor. Be careful.

    Cahil
     
  4. Boston Mangler

    Boston Mangler

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    Kinda Un Related but i just had my radiator replaced and the shop i had do it used the green stuff

    is this ok?
     
  5. cahilc

    cahilc

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    I use green stuff.
    :+)
    Actions speak louder than words.
    :+)

    Cahil

    P.S. Toyota Red might provide a longer interval for change and some other esoterical benefit ... I'll still use green.
     
  6. humper99

    humper99

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    I've heard of useing CLR to clean out a radiator. Safer than acid and won't eat up hoses. Drain it plug the bottom line, pour an entire bottle of CLR in and top with hot water. Let it sit and foam for awhile then flush the radiator real well. I'd try the new thermostat first. Cruising on the highway there should be enough airflow where the engine fan shouldn't be needed so you could kinda rule out the fan clutch. Also check the cooling fins of the radiator to make sure they are not bent up or clogged up with leaves, dead bugs, and dirt.
     
  7. vtcruiser60

    vtcruiser60 SILVER Star

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    the awful-izer

    2F heads tend to crack, IMO. An 87 is a 3FE head, right Doc?

    Before you start replacing radiators and flushing...why not try a cold and hot compression test. Cold, you will at least get some baseline on the cylinders. Watch for something greater than 15% difference between cylinders. Then try a c.test after it is piping hot. If you pull one of the plugs and antifreeze spews out....my guess is that you are going to want to do a flush, a new radiator, thermostat, and at least a new head gasket. While that head is off have the machinist check for cracks. Given that you have not had any overheating problems and this one happened oh so quickly, worsening as you drove, I am thinking you may have a crack. It could be repairable without much cost...but it might not.

    Compression tests are fairly easy, and take less time than replacing thermostats, radiators, etc. Sorry to be lame with the worst case scenario......my wife calls it awful-zing.
     
  8. rightlane

    rightlane

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    a rad shop will boil out and repair any leaks for @ $60. im in az in 110 degrees and had a cooling problem. now i dont go past 1/2 w/ ac and idling.
     
  9. hj60

    hj60

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    I think the Toyota Red coolant is specifically designed for engines with aluminum
    components.
     
  10. cahilc

    cahilc

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    Good info ... Thanks.

    Me be green !!!

    Cahil
     
  11. swank60

    swank60

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    I wouldn't worry about the fan clutch - but replacing the rad cap is a good idea. You need to flush the hell out of it though - and good. You may want to find out how much it costs to rod out the rad - if it's over $200, don't do it, just consider a new one (got mine at carradiator.com - better than OEM)

    Like I told lowtide, the general rule is this: if it's getting hot at highway speeds, it's a blocked up cooling system. If it gets hot in traffic, but cools when under speed, it's the fan clutch.

    As far as antifreeze goes - antifreeze is anti-freeze, and I wouldn't worry about changing the thermostat just yet, either. You could pull it out and test it, and even run without it for a while (but then you're likely to never warm up) The thermostat can run you up to $50.

    The most important thing you need to do is get that system flushed, check for hoses that may be kinked or blocked, and make sure it's moving coolant through the system and cooling it in the radiator.
     
  12. swank60

    swank60

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    here's an afterthought - might check the belt tension, too - if your belt is slipping at high speeds, you'll loose that flow, too.

    (I had a heating problem, replaced the rad, and now mine stays at about 1/4.)
     
  13. CTiger

    CTiger

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    Green

    Use the green...it's supposed to be that way if u look in the manual :flipoff2:
     
  14. Doc

    Doc

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    I'm calling the mechanic this morning. Hopefully they'll be of some assistance.

    and the 87 fj60 is a 2F engine... as far as I know!

    Thanks for the pointers guys. I guess it's time to put some money in the 'beater'. Hopefully nothing is cracked yet, I didn't notice any white smoke out the exhaust pipe, so I think that's a good sign so far.
     
  15. jhstatts

    jhstatts

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    Yeah, my 60 is an '87 and it has a 2F. Sorry to hear about your cooling problem, Doc.
     
  16. Doc

    Doc

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    Ok. The radiator got some flushing....

    Since I had the cash I decided to get both of the cruisers done, as I had no idea when the last time it was done on the 80 either.

    The 80 did have some lovely gunk that came out.

    The 60 did not. :mad:

    So..... I'm going to 'highway' test it again tonight after work. I'm expecting it to get hot again though, since nothing abnormal was flushed out. My next guess is the radiator itself is restricting flow.

    Damn.

    Any suggestions for a GOOD replacement radiator? I think I'll want an 'upgrade', as in more rows, cores, whatever...
     
  17. Doc

    Doc

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    Highway test- FAILED

    New radiator time, suggestions? Should I do the whole shootin' match and get a new thermostat, and cap too?
     
  18. kevin g

    kevin g

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    Doc,
    I kind of agree with Andrew (except the fan clutch part). Maybe just shell out the <<$100 for a new thermostat and radiator cap first, since it is probably prudent to replace those anyway when replacing a radiator. If they do not fix the problem, then look at the radiator and water pump.

    Have you tried spraying your radiator with water after the cruiser is warmed up to find cold spots on the radiator? Areas that stay wet for a while indicate cold spots that indicate blockage.
     
  19. swank60

    swank60

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    If you decide to replace the radiator:

    I went with carradiator.com - I did some research at the time and found a lot of compaints about the OEM radiator. They've got weak seams, etc. (that's how mine went - seams started to give out) - the one I got was a direct replacement and I haven't seen a hint of trouble, and the truck stays cool (just under a 1/4 on the gauge - always)

    That's my story and I'm sticking to it.
     
  20. Doc

    Doc

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    I called Carradiator.com and they did not have one instock, nor did they act like they really wanted to special order one for me.

    The guy said he'd call me back today with an answer.