Jeep overheated, water pump changed, radiator flushed, what else to do?
John in NJ
all the recommendation from the group.
Here is what I did:
1- Thermostat taken out. not yet put one in
2- Radiator flushed and refilled with new coolant.
3-Water pump changed 3 months ago.
4-Checked all the hoses, no clogs or signs of leaking.
5- Checked water, all filled to proper mark.
What else can I do, the Jeep is still overheating and I afraid if I keep on
using her, I may end up lose the engine.
Like I said: when I changed the thermostat, I notice the coolant was a very
unhealthy brownish, rusty color.
I hope that could be a indication of a problem someplace.
Thanks
Mike Romain
If worn out, the engine will overheat.
Here is a quick test: Heat up the engine and have someone turn it off
while you watch the fan. A good clutch will stop the fan instantly. If
the fan keeps on spinning the clutch is dead.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail
88 Cherokee 235 BFG AT's
Build and Canadian Off Road Trips Photos:
(Updated July 03/01 with Newfoundland Trip photos)
http://albums.photopoint.com/j/AlbumList?u=1161190
rcassetty
will heat up fast.
"Mike Romain" <rom...@sympatico.ca> wrote in message
news:3B72B189...@sympatico.ca...
Frank Worm
Maybe it's not overheating at all.
Darren Highfill
really old it could have enough buildup (corrosion) in it that flushing will
not do much if any good. Did you flush it yourself or did somebody that
sees a lot of radiators flush it? I would expect someone that has seen a
few to be able to tell you if it has adequate flow. Also check the fan
clutch as Mike Romain suggested.
Your reference to brownish coolant does make me wonder though... it's not
oily, is it? If oil is in your coolant, your concerns about your motor may
already be manifested. A blown head gasket, cracked block, or cracked head
will cause overheating.
--
|-D
Darren Reece Highfill
drhig...@yanospamhoo.com
"John in NJ" <Ihatespam-...@yahoo.com> wrote in message
news:w%xc7.3300$Ah1.5...@typhoon1.gnilink.net...
Darren Highfill
really old it could have enough buildup (corrosion) in it that flushing will
not do much if any good. Did you flush it yourself or did somebody that
sees a lot of radiators flush it? I would expect someone that has seen a
few to be able to tell you if it has adequate flow. Also check the fan
clutch as Mike Romain suggested.
Your reference to brownish coolant does make me wonder though... it's not
oily, is it? If oil is in your coolant, your concerns about your motor may
already be manifested. A blown head gasket, cracked block, or cracked head
will cause overheating.
--
|-D
Darren Reece Highfill
drhig...@yanospamhoo.com
"John in NJ" <Ihatespam-...@yahoo.com> wrote in message
news:w%xc7.3300$Ah1.5...@typhoon1.gnilink.net...
Darren Highfill
John in NJ
plain water and let the engine ran about 10 min. Did that a few time until
I saw clear water came out.
The brownish coolant was more like water that sit on old rusty iron. Very
dark but I didn't see any oil came out with it. I guess that's a good sign.
John
"Darren Highfill" <drhig...@nospamyahoo.com> wrote in message
news:3b72b...@news.chartertn.net...
John in NJ
the fan kept rotating about 8-10 revs after I kill the engine. That was the
original clutch and original radiator too. Time for it to go, I think.
"Mike Romain" <rom...@sympatico.ca> wrote in message
news:3B72B189...@sympatico.ca...
Jerry Bransford
deposits by a radiator shop. Unless distilled or demineralized water
were used to mix with the antifreeze, it's very likely at least
partially clogged with these mineral deposits. Backflushing has *no*
effect on removing them, the only way to remove the deposits is to have
it rodded (mechanically cleaned) out. This is very likely the source of
it overheating so long as the thermostat is not defective.
Jerry
--
Jerry Bransford
PP-ASEL KC6TAY
The Zen Hotdog... make me one with everything!
Geezer Jeep: http://www.jjournal.net/jeep/gallery/JBransfordsTJ/
John in NJ
professionally flushed it what do you think about a new radiator instead?
Pepboys quoted me a $226 aftermarket radiator, I wonder if the newer 4.0L
radiator can be used for the older 4.2L ???
"Jerry Bransford" <Jer...@home.com> wrote in message
news:3B72C6AE...@home.com...
John in NJ
coolant spilled out of the water bottle. Things were hissing all over. My
eyes were wide open when open the hood , feeling like "Oh...ooo shit...
something was going to explode."
Seriously, the guage did show a range from cool to hot as the engine heat
up, so I doubt if the sender is playing game on me.
"Frank Worm" <fw...@norpak.ca> wrote in message
news:3B72BA69...@norpak.ca...
Mike Romain
When hot, that clutch should be just about locked up and stop instantly.
Also when hot after you shut it down and try and hand spin it, it should
move less than an inch with a hard two fingered push.
Mike
Jerry Bransford
good enough shape to have it checked out. If it's clogged, have it
"rodded out" (this is *not* the same as flushing it out) which is
essentially rebuilding the radiator. If it's still in good shape,
having it rodded out will probably cost half as much as buying a new
radiator. The last time I had it done it cost me less than $100. A
*small* independent radiator shop is your best bet, not the dealer.
Scott Busby
There are two types of water pumps for the Wrnaglers. On the 2.5L. 4.0L
and 4.2L engines with the serpentine belt the reverse rotation pump is
used. 2.5L and 4.0L engines with the V type drive belts are forward
rotating. If you put the wrong one on your gonna cook the motor. Check
on the body of the waterpump for a cast "REV". An "R" will also be
stamped into the water pump impeller.
Scott
Clutch fans just don't wear out. Although I'm not discounting that. I
have 200K miles on my YJ with lots of hard driving behind it and my fan
clutch is fine.
Ken Knapp
Ken
'97 TJ
Nellybelle
John in NJ <Ihatespam-...@yahoo.com> wrote in message
news:w%xc7.3300$Ah1.5...@typhoon1.gnilink.net...
Bruce Chrustie
John in NJ wrote:
>
> The mechanic replaced the belt when he put in that water pump. But I notice
> the fan kept rotating about 8-10 revs after I kill the engine. That was the
> original clutch and original radiator too. Time for it to go, I think.
>
I second the vote on the clutch. My XJ overheats in line at the Dairy
Queen when me and the dog are going for a cone. Not enough airflow, yet
it cools down once we get going again.
Jim (Yucca-man)
It's time to replace the clutch on the fan. When it's hot, it should be
almost locked and should not rotate like that.
I'm also concerned about the "brown" water in the radiator. I'd recommend
running some of the radiator cleaner stuff for 8-10 minutes, and then
completely draining the system. That would be a great time to switch the
radiator for a 3-row from GDI for $100. 1-800-radiator, and tell them you
want in on the group buy. NAXJA (North American XJ Association) set up a
buy with Damon (of GDI) and Dirk Sanders of DPG Off-road, but I think you
can get in on it for a YJ radiator as well.
Use only distilled water in the radiator from now on. The hose water is
full of minerals, so you probably have blocked passages in your old
radiator. If you don't get the new radiator, at least get this one rodded
out by a radiator shop. Don't run straight water either, you need at least
a 50/50 mix with coolant, and don't mix the green and the orange coolants.
Jim "hope that helps" Yucca-man
96 XJ
"John in NJ" <Ihatespam-...@yahoo.com> wrote in message
news:bxzc7.1237$1h.1...@typhoon2.gnilink.net...
P Carvalho
I see below you mentioned you took your thermostat out and didn't put a new
one back in. Have you put one back in yet?
That thermostat is necessary for cycling your coolant in and out of your
radiator and engine block. If you're running with no Thermostat, you're not
giving the hot coolant leaving the engine time to cool off in the radiator.
So that same HOT coolant returns to the block, never cooling off.
Especially with the weather we've been having here in NJ.
I'd say buy yourself a nice new thermostat.
Later.
"John in NJ" <Ihatespam-...@yahoo.com> wrote in message
news:w%xc7.3300$Ah1.5...@typhoon1.gnilink.net...
opphi7
thermostat. turned out to be blown head gasket and cracked head. hopefully this
is not the case with yours, but a good way to check for blown head gasket is to
start car with radiator cap removed and if water shoots out the head gasket is
most likely bad.
Mike Romain
My engine just started overheating, changed the t-stat, it got better
until I run her over 70 mph, then the temp just shoots up. Slow down
and the temp goes down.
My symptoms were water shooting out when the t-stat opened too...
Time for a compression test....
I have a fixed fan, no clutch.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail
88 Cherokee 235 BFG AT's
Build and Canadian Off Road Trips Photos:
(Updated July 03/01 with Newfoundland Trip photos)
http://albums.photopoint.com/j/AlbumList?u=1161190
L.W.(Bill) Hughes III
Which Jip are you talking about? If you think it is a head gasket, see if you can
make something where you can completely fill the radiator, eliminating any trapped
air so that any bubbles you see will have to have come from the exhaust gases. I
don't think you'll find anything will a compression test, unless it was so.. bad you
would have water in the oil. Some other things to think about, is sometimes the lower
hose will suck shut. I run a flex fan, but, one of the problems with it is at high
RPM, where the blades flatten out will actually block air from flowing through the
radiator.
Later, Bill O|||||||O
mailto:LWHug...@aol.com http://www.billhughes.com/
Mike Romain
Bubbles, eh.
Tiny bubbles.... Don't make me feel fine...
It froths up like used toothpaste when you spit it out....
See....
http://albums.photopoint.com/j/ViewPhoto?u=1161190&a=13556952&p=52973572&f=0
And
http://albums.photopoint.com/j/ViewPhoto?u=1161190&a=13556952&p=52973574
The lower hose is new.
Way too many bubbles....
Grrrr...
Mike
L.W.(Bill) Hughes III
Mike Romain
week...
I like the Hawaii idea though. I like those kind of tiny bubbles...
Mike
Will Honea
instead of antifreeze ;-{ Bet I know what you'll be doing tonight...
--
Will Honea <who...@codenet.net>
Paul Skinner
> Time for a vacation, Maybe to hear Don Hoe in Hawaii.
Or maybe his twin brother, Bud. :-o
Seriously, they do rent Wranglers somewhere on Hawaii. Mike could do
his one-week Jeep vacation there! :-)
Paul
finagler
"I have one simple request, and that is to have SHARKS with frikkin'
LASER BEAMS attached to their heads!" -Dr. Evil