getting hot while towing+hills - Pirate4x4.Com : 4x4 and Off-Road Forum

borton · 10-07-2001, 05:51 PM

ok, I've got an 89 burban, a crane cam in the 350, new radiator, and new 195 thermostat, and radiator cap. when I put the jeep on the trailer and take a hill the thing gets hot, and drops fairly fast after hitting the top, it only gets this hot when towing this kind of a load, I can run all day long with the air on and a hot day with no problem, just when pulling and hills, the thing has sufficient power to do the hills but the heat just keeps rising, so I'm thinking its either a water pump issue, but not sure, or the stock big ass catilitic converter, but on that line, it is a 3" exhaust, so even a restricted one would flow better than a 2.5 one maybe?

what do you think? I really need to do something about it before I leave for moab thursday. TIA

4x4jbm · 10-07-2001, 08:04 PM

Could be the timing. <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0">

hy_desert_4wheeler · 10-08-2001, 04:34 AM

Sounds like an airflow problem to me. Did you reinstall the fan shroud when you put in the new radiator?? Another possibility is the fan clutch could be getting weak.

borton · 10-08-2001, 06:40 AM

timing is set a 0* right where it sais to put it acording to the factory and crane cam.

could be the fan clutch, but when your doing 60mph, shoulden't the air flow hitting the radiator be enough?

Muddin · 10-08-2001, 02:33 PM

What color is your tranny fluid? I think you might be overheating your tranny and running that hot fluid thru your radiator and heating everything up. Do you have a tranny cooler on it?

Shawn · 10-08-2001, 09:03 PM

On a tow rig a Oil Cooler is a must.

Shaker · 10-09-2001, 04:28 AM

sounds like clutch fan is going on vacation and you might wanna "flush" the radiator and see if you have any "hot spots" thats a good indication its not doing its job right. You might wanna try a cooling addative that redline makes it drops avg. temps about 20 deg. <IMG SRC="smilies/beer.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0">

hy_desert_4wheeler · 10-09-2001, 06:02 AM

When you are on flat ground you get enough airflow. But when you try to maintain 60 in the hills or mountains or while towing you are adding more fuel, therefore, more heat but with the same airflow.

borton · 10-09-2001, 06:36 AM

its got an oil cooler, a tranny cooler, and the tranny lines bypass the radiator and go through only the tranny cooler, the fluid is red, not burnt, and is new. I've got 3000 miles on the rebuilt tranny and the tranny cooler, the radiator is only 1 year old and has been drained a couple of times in that time from a cam change and other things,

last night I did the catilitic converter and put in a 180 thermostat, took the same hill with the same load and it got just above 210, when the day before it hit like 240, but it was a cooler day yesterday too. tonight I'll do the WP, cause I don't know its origion and its easy enough to change, this may or may not help, if not, i'll look into a 4 core radiator. fan clutch is a recently replaced thing too.

Norm · 10-09-2001, 09:51 AM

Had a 89 K30 with similar problems, having the radiator rodded out finally fixed it. The coolant from the factory seem to corode the cores fairly fast.

borton · 10-10-2001, 07:02 AM

well I threw on a new catalitic converter, and a 180* thermostat, then took the same hill with the same load and it barely got above 210, quite acceptable.

does anyone know what temp it is that the computer comes out of "warm up" mode, I know on my jeep its 180, but I'm not sure with the suburban.

rubherchicken · 12-26-2006, 09:35 PM

fan clutch could be some of your issue as others stated, a good high quality elect. fan in place of the mechanical fan will do two things for you, 1. most of the good ones pull more air (cfm's) than the mechanical ones, 2. you wont loose the 15 plus horse power when the mechanical one kicks on, therefore reducing the load on your engine, which can help keep the temp down aswell

Badburn · 12-27-2006, 07:51 AM

My opinion on the electric fan: There is not an electric fan made that is capable of cooling a v-8 @ wide open throttle. As stated above in another post - it takes a lot of HP to move enough air to cool a v-8 engine. Good luck getting more than about 1/2 HP out of a little electric fan motor. Install a good 19 inch (or bigger)mechanical fan and a shroud.

I once had my fan belt come off on the dyno, the power jumped up by 57 HP at the rear wheels @ 5000 or so RPM. (19 inch flex fan)

Putting an electric fan on is like pissing on a forest fire!

mobilemech · 12-27-2006, 08:47 AM

look at a/c condensing unit, lots of bugs and debris from road time = less air flow, temp rise shows up more on loaded condition. blow condesing unit out from rad. side with compressed air. may help.

bigyellowjimmy · 12-27-2006, 09:08 AM

this post is 5 years old......I'll bet its fixed by now

GMCTruxrule · 12-27-2006, 10:24 AM

that shit is fucking funny.
But whatever the case may be, a electric fan can't hold a candle to a mechanical fan with a good fan shroud.

Badburn · 12-27-2006, 12:27 PM

Quote:

Originally Posted by bigyellowjimmy

this post is 5 years old......I'll bet its fixed by now

LOL, thats funny.........How the hell did it get back up to the top?

I should wear my glasses when posting.

Im gonna e mail him and find out what it was, LOL.

mobilemech · 12-27-2006, 01:05 PM

ah shit, i should read the whole post! funny shit that is...

aloharover · 12-27-2006, 07:21 PM

Quote:

Originally Posted by Badburn

.How the hell did it get back up to the top?

.

Uhm that would be the dumb ass newbie thats been around for a month.
Guess it took a lot of searching for them to find a problem they could "solve"

GMCTruxrule · 12-27-2006, 07:43 PM

Quote:

Originally Posted by rubherchicken

fan clutch could be some of your issue as others stated, a good high quality elect. fan in place of the mechanical fan will do two things for you, 1. most of the good ones pull more air (cfm's) than the mechanical ones, 2. you wont loose the 15 plus horse power when the mechanical one kicks on, therefore reducing the load on your engine, which can help keep the temp down aswell

Speaking of newb dumbassdome, lets evaluate the gibberish that this guy writes:
First off, the guy complains about high engine temps towing up hills. Prolly a dumbass himself, not realizing that downshifting on hills is a must, especially with a smallblock. Also, increased load on an incline will induce higher temps.
Nature of the beast.
Second, fans don't have jackshit to do with engine cooling when you are traveling down the highway at highway speeds.
Third, anyone with a decent set of brains knows that mechanical fans pull more air with a good shroud than a fawking electric fan.
Finally, how the fuck are you going to increase the temperature of your fucking coolant and overheat your motor by running a mechanical fan???

What a fawking moron.

Rubherchicken fawking newb, go back to your World of Warcraft games and leave the 6 year old problem analyzing to someone who actually knows what the fuck they are talking about.

10-07-2001, 05:51 PM	#1 (permalink)
borton Zeus of the Sluice Join Date: Oct 2000 Member # 2125 Location: cold north Posts: 2,576	getting hot while towing+hills ok, I've got an 89 burban, a crane cam in the 350, new radiator, and new 195 thermostat, and radiator cap. when I put the jeep on the trailer and take a hill the thing gets hot, and drops fairly fast after hitting the top, it only gets this hot when towing this kind of a load, I can run all day long with the air on and a hot day with no problem, just when pulling and hills, the thing has sufficient power to do the hills but the heat just keeps rising, so I'm thinking its either a water pump issue, but not sure, or the stock big ass catilitic converter, but on that line, it is a 3" exhaust, so even a restricted one would flow better than a 2.5 one maybe? what do you think? I really need to do something about it before I leave for moab thursday. TIA

10-07-2001, 08:04 PM	#2 (permalink)
4x4jbm Registered User Join Date: Mar 2001 Member # 3646 Location: Antelope, CA, 95843 Posts: 400	Could be the timing. <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> <IMG SRC="smilies/smile.gif" border="0"> __________________ WHAT THE HELL IS THAT?

10-08-2001, 04:34 AM	#3 (permalink)
hy_desert_4wheeler Registered User Join Date: Jan 2001 Member # 2790 Location: Stinnett Tx USA Posts: 1,629	Sounds like an airflow problem to me. Did you reinstall the fan shroud when you put in the new radiator?? Another possibility is the fan clutch could be getting weak. __________________ Russ hy_desert_4wheeler 46 Dodge WC15--67 M715--85 Jeep CJ10A--06 Dodge Ram2500Quad cab Cummins--94 Suburban--06 Ridgeline-

10-08-2001, 02:33 PM	#5 (permalink)
Muddin Rock God Join Date: Jun 2001 Member # 5123 Location: Texas Posts: 2,393	What color is your tranny fluid? I think you might be overheating your tranny and running that hot fluid thru your radiator and heating everything up. Do you have a tranny cooler on it? __________________ Stabbings aren't funny. Beatings aren't funny. Clowns aren't funny. But stabbing and beating a clown is. Argue not to win victory over your opponent, but to advance toward the truth.

10-08-2001, 09:03 PM	#6 (permalink)
Shawn Registered User Join Date: Feb 2000 Member # 77 Location: SLC, Utah Posts: 1,406	On a tow rig a Oil Cooler is a must. __________________ 74 FJ40 Buggy 454,TH400, STAK 3 Speed, 14 Bolt, Dana 60, etc

10-08-2001, 06:40 AM	#4 (permalink)
borton Zeus of the Sluice Join Date: Oct 2000 Member # 2125 Location: cold north Posts: 2,576	timing is set a 0* right where it sais to put it acording to the factory and crane cam. could be the fan clutch, but when your doing 60mph, shoulden't the air flow hitting the radiator be enough?

10-09-2001, 04:28 AM	#7 (permalink)
Shaker Zeus of the Sluice Join Date: Mar 2001 Member # 3694 Location: Chesapeake, VA, USA Posts: 3,584	sounds like clutch fan is going on vacation and you might wanna "flush" the radiator and see if you have any "hot spots" thats a good indication its not doing its job right. You might wanna try a cooling addative that redline makes it drops avg. temps about 20 deg. <IMG SRC="smilies/beer.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0"> __________________ Need Steering? www.shakerbuilt.com Too Many Projects not enough Time...

10-09-2001, 06:02 AM	#8 (permalink)
hy_desert_4wheeler Registered User Join Date: Jan 2001 Member # 2790 Location: Stinnett Tx USA Posts: 1,629	When you are on flat ground you get enough airflow. But when you try to maintain 60 in the hills or mountains or while towing you are adding more fuel, therefore, more heat but with the same airflow. __________________ Russ hy_desert_4wheeler 46 Dodge WC15--67 M715--85 Jeep CJ10A--06 Dodge Ram2500Quad cab Cummins--94 Suburban--06 Ridgeline-

10-09-2001, 06:36 AM	#9 (permalink)
borton Zeus of the Sluice Join Date: Oct 2000 Member # 2125 Location: cold north Posts: 2,576	its got an oil cooler, a tranny cooler, and the tranny lines bypass the radiator and go through only the tranny cooler, the fluid is red, not burnt, and is new. I've got 3000 miles on the rebuilt tranny and the tranny cooler, the radiator is only 1 year old and has been drained a couple of times in that time from a cam change and other things, last night I did the catilitic converter and put in a 180 thermostat, took the same hill with the same load and it got just above 210, when the day before it hit like 240, but it was a cooler day yesterday too. tonight I'll do the WP, cause I don't know its origion and its easy enough to change, this may or may not help, if not, i'll look into a 4 core radiator. fan clutch is a recently replaced thing too.

10-09-2001, 09:51 AM	#10 (permalink)
Norm Poor White Trash Join Date: Apr 2001 Member # 4387 Location: Kalispell, MT Posts: 1,865	Had a 89 K30 with similar problems, having the radiator rodded out finally fixed it. The coolant from the factory seem to corode the cores fairly fast. __________________ "My Border Collie is smarter than our president"

10-10-2001, 07:02 AM	#11 (permalink)
borton Zeus of the Sluice Join Date: Oct 2000 Member # 2125 Location: cold north Posts: 2,576	well I threw on a new catalitic converter, and a 180* thermostat, then took the same hill with the same load and it barely got above 210, quite acceptable. does anyone know what temp it is that the computer comes out of "warm up" mode, I know on my jeep its 180, but I'm not sure with the suburban.

12-26-2006, 09:35 PM	#12 (permalink)
rubherchicken Registered User Join Date: Nov 2006 Member # 82701 Posts: 46	fan clutch could be some of your issue as others stated, a good high quality elect. fan in place of the mechanical fan will do two things for you, 1. most of the good ones pull more air (cfm's) than the mechanical ones, 2. you wont loose the 15 plus horse power when the mechanical one kicks on, therefore reducing the load on your engine, which can help keep the temp down aswell Last edited by rubherchicken; 12-26-2006 at 09:35 PM.

12-27-2006, 07:51 AM	#13 (permalink)
Badburn Registered User Join Date: Feb 2004 Member # 27377 Location: Shingle Springs, CA Posts: 251	My opinion on the electric fan: There is not an electric fan made that is capable of cooling a v-8 @ wide open throttle. As stated above in another post - it takes a lot of HP to move enough air to cool a v-8 engine. Good luck getting more than about 1/2 HP out of a little electric fan motor. Install a good 19 inch (or bigger)mechanical fan and a shroud. I once had my fan belt come off on the dyno, the power jumped up by 57 HP at the rear wheels @ 5000 or so RPM. (19 inch flex fan) Putting an electric fan on is like pissing on a forest fire! __________________ 78 Blazer, Dana 60/14bolt, crossover steer, front and rear ARB's, beadlocked 39.5 Irok's, 465/205, smallblock 400, TBI. "...........and that was without a single drop of rum!"- Captain Jack Sparrow Last edited by Badburn; 12-27-2006 at 07:52 AM.

12-27-2006, 08:47 AM	#14 (permalink)
mobilemech Registered User Join Date: Dec 2006 Member # 83912 Location: REDDING CA. Posts: 178	look at a/c condensing unit, lots of bugs and debris from road time = less air flow, temp rise shows up more on loaded condition. blow condesing unit out from rad. side with compressed air. may help.

12-27-2006, 09:08 AM	#15 (permalink)
bigyellowjimmy Registered User Join Date: Sep 2005 Member # 53682 Location: Chandler, AZ Posts: 712	this post is 5 years old......I'll bet its fixed by now __________________ Freedom is only part of the story and half the truth….That is why I recommend that the Statue of Liberty on the East Coast be supplanted by a Statue of Responsibility on the West Coast. Viktor E. Frankl

12-27-2006, 10:24 AM	#16 (permalink)
GMCTruxrule Registered User Join Date: Aug 2005 Member # 51243 Location: Tropical Paradise Posts: 3,410	that shit is fucking funny. But whatever the case may be, a electric fan can't hold a candle to a mechanical fan with a good fan shroud. __________________ [COLOR="Lime"][B]1999 Chevy K3500, 5.7/4L80E/14FF/stock/stock/stock[/B][/COLOR]

12-27-2006, 01:05 PM	#18 (permalink)
mobilemech Registered User Join Date: Dec 2006 Member # 83912 Location: REDDING CA. Posts: 178	ah shit, i should read the whole post! funny shit that is...

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