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Cooling Systems -- Problems & Solutions (Radiator, Fan, etc)

561 messages,  Last post on Nov 12, 2009 at 1:37 PM

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#503 of 561
Re: '06 Civic antifreeze leaking - why?? [cmruff] by imidazol97
Aug 15, 2008 (3:56 am)
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Replying to: cmruff (Aug 14, 2008 5:54 pm)

>CRACKED ENGINE BLOCK.
>on another 2006 Civic..
>My faith in Honda is completely restored!!
 
But cars aren't supposed to have cracked engine blocks. There's a problem. Replacing parts is nice, but it would have been better to engineer and build better to begin with.
#504 of 561
Re: '06 Civic antifreeze leaking - why?? [imidazol97] by cmruff
Aug 15, 2008 (8:31 am)
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Replying to: imidazol97 (Aug 15, 2008 3:56 am)

Yeah, I know newish cars shouldn't have cracked engine blocks. The mechanic suggested it could have been unseen porosity in the casting that didn't break apart at the beginning.
On the other hand, 2006 was the first year of the new model and I remember it being hard to even get a hold of one. I had to wait a month because I wanted a 5 speed. Maybe corners were cut? Also, I NEVER would have bought anything in the first year of a major model change, but my previous Civic had been squashed in 2006: I was stopped and clobbered by a 60 mph Suburban and got out with only a goose egg on my head so of course I wanted another Civic. In fact, that crash pretty much cemented my loyalty to Honda; this repair is the icing on the cake.
Or maybe it just occasionally happens in this NAFTA-esque nightmare of an economy. I've purchased a number of new computers, too - and only one of them had a faulty hard drive, but still, one new computer did have a faulty hard drive. And I've purchased a number of cars; this is my first (I hope only) one with a faulty engine block.
It does make me wonder about that funny under-the-front-dash buzz I used to hear when I'd go 70 - I wonder if there was a connection between the buzz (which had pretty much vanished by 37000 miles) and the crack. When I brought the then-brand new car in to see about the buzz, they couldn't hear it - they said the local hwys didn't let them go 70?!
#505 of 561
fans not turning/engine hot on 1998 plymouth voyager by thutch1
Aug 16, 2008 (1:21 pm)
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i have a 1998 plymouth voyager with a 3.3 ltr v6. i have replaced the fan module, the water pump (at the shop)and the ecm (myself)but it still overheats when i am driving in town with lots of stops, but will stay cool on the highway. i know the fans are not kicking on when it gets hot. i have not changed the thermostat yet. wondered if you could give me any suggestions? thanks!
#506 of 561
Re: fans not turning/engine hot on 1998 plymouth voyager [thutch1] by kiawah
Aug 16, 2008 (1:45 pm)
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Replying to: thutch1 (Aug 16, 2008 1:21 pm)

I had a 96 chrysler t&c, which blew out the cooling fan transistors (they act like a relay)....and the fans never came on, causing it to overheat. They are actually mounted down on the frame, so that they use the frame as a heatsink. (Heatsinks keep transistors from overheating and burning up). I had never seen that arrangement before, and only found it because I had a wiring diagram for the car.
 
I don't know if the 98 is the same, but it might very well be.
 
I guess what I'd suggest is to follow the wiring back from the fans, and see if they connect to something mounted down on the front frame.
#507 of 561
Re: fans not turning/engine hot on 1998 plymouth voyager [thutch1] by dgrasser
Aug 18, 2008 (8:20 pm)
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Replying to: thutch1 (Aug 16, 2008 1:21 pm)

I have a 98 Dodge Grand Caravan with the same problem. There was a recall or service notice on the thermostat device that was mounted on the frame but was having a problem with falling off.
Look under the NHTSA site or contact your local dealer.
I think it may have been a service bulletin.
http://www-odi.nhtsa.dot.gov/cars/problems/recalls/
#508 of 561
Re: fans not turning/engine hot on 1998 plymouth voyager [dgrasser] by dgrasser
Aug 18, 2008 (8:23 pm)
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Replying to: dgrasser (Aug 18, 2008 8:20 pm)

Check out this related link:
http://autorepair.about.com/library/faqs/bl287f.htm
#509 of 561
Ford Explorer 06 Cooling System by eml4
Oct 16, 2008 (10:00 pm)
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I have a 2006 Ford Explorer and I have just gotten the fan belt replaced. However the engine coolant sign or whatever it is keeps popping up and my car almost over heats every time I drive it work the past week. Could it be cold weather? Should something be replaced? I'm just really confused because if something was wrong wouldn't someone have noticed it when replacing the fan belt?
#510 of 561
Re: Ford Explorer 06 Cooling System [eml4] by bolivar
Oct 17, 2008 (1:00 am)
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Replying to: eml4 (Oct 16, 2008 10:00 pm)

There is very little to 'notice' when replacing a fan belt.
 
But they could have messed up installing the belt correctly. Which could lead to the overheating.
 
Overheating is a very serious problem. It can quickly completely ruin a motor. You need to have this repaired quickly. I think I would take it back to where you had the belt replaced.
 
I just reread your post. You said 'almost overheats'. I thought it was overheating (coolant being blown out of the radiator, etc.)
What do you mean 'almost overheating'? Is the coolant guage running much higher than before?
 
Putting the belt on still could be the reason for a change. For example, you coolant fan might not be running because they knocked an electrical connection loose. (I'm guessing but I would think a 2006 vehicle has an electric coolant fan, not a manual one run off the belt). With the fan not running, if the weather is cool where you live and you only drive a short distance at slow speeds, the car might just show higher than usual temperatures on the guage. If you drive it further or faster, it might overheat more.
 
Overall, take it back where you had the belt replaced. Of course, they might reconnect a loose connection, tell you the car needs a radiator flush (should not be needed on a 2/3 year old car) and charge you a lot more money for doing some unneeded repair.
#511 of 561
Radiator. Repair or replace? by orchiddj
Nov 02, 2008 (5:47 pm)
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Hi all,
 
2000 Chevy 1500 express van 4.3. 116K.
 
One of the plastic tanks on radiator has a crack.
 
Can a radiator shop replace the tank or should I buy a new radiator?
 
I checked local parts stores and am looking at $ 200 - $ 300. Looked online and can get for about $ 150 delivered. Is there any difference other than the price?
 
Thanks
Jim
#512 of 561
by bobillac
Dec 27, 2008 (2:42 pm)
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Have a 1986 Cadillac Seville 4.1 engine. My fan stays on all the time,radiator and air conditioning.Is the rad. fan switch the one on thermostat housing or is it the one near the altnator side of engine. (it dose'nt over heat or leak)

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