Author Topic: Cooling Issues (Read 3629 times)

jrock · « **on:** Jun 17, 2009, 06:34:47 PM »

I'm having a bit of a problem with my cooling.... For example:
Light driving (ie. <35mph), 1/8 on gauge.
Freeway (65-70), 1/2.
Hills, 3/4.

Thermostat is fairly new and I just flushed the system trying to fix this problem. It does not change quickly and it does not over heat. Can someone point me in the right direction.

*** YELLER *** · « **Reply #1 on:** Jun 17, 2009, 06:41:19 PM »

Quote from: jrock on Jun 17, 2009, 06:34:47 PM

I'm having a bit of a problem with my cooling.... For example:
Light driving (ie. <35mph), 1/8 on gauge.
Freeway (65-70), 1/2.
Hills, 3/4.

Thermostat is fairly new and I just flushed the system trying to fix this problem. It does not change quickly and it does not over heat. Can someone point me in the right direction.

GO THAT WAY ------------->

<----------------NO WAIT GO THAT WAY

CRAP IM NO HELP

Blingn · « **Reply #2 on:** Jun 17, 2009, 06:44:14 PM »

what is the issue if it is not overheating? We need more infro mation
If you were talking about my tow rig I would say that is just about right.

*** YELLER *** · « **Reply #3 on:** Jun 17, 2009, 06:49:18 PM »

Quote from: Blingn on Jun 17, 2009, 06:44:14 PM

what is the issue if it is not overheating? We need more infro mation
If you were talking about my tow rig I would say that is just about right.

But were not talking about yer tow rig now are we

and stop following me around the board

emsvitil · « **Reply #4 on:** Jun 17, 2009, 07:29:59 PM »

Test the thermostat. Sounds like it's stuck (somewhere between closed and fully open)

jrock · « **Reply #5 on:** Jun 17, 2009, 10:24:49 PM »

I will check that.

It's my toyota. 22re, 33's, w56, blah blah.

DeadlyPeace · « **Reply #6 on:** Jun 17, 2009, 10:25:25 PM »

Did you make sure to burp it?

jrock · « **Reply #7 on:** Jun 17, 2009, 10:25:43 PM »

Quote from: **OLD MAN YELLER** on Jun 17, 2009, 06:41:19 PM

GO THAT WAY ------------->

<----------------NO WAIT GO THAT WAY

CRAP IM NO HELP

Weirdo.

jrock · « **Reply #8 on:** Jun 17, 2009, 10:26:08 PM »

Quote from: DeadlyPeace on Jun 17, 2009, 10:25:25 PM

Did you make sure to burp it?

Yes.

DeadlyPeace · « **Reply #9 on:** Jun 17, 2009, 10:30:01 PM »

Then I'd say thermostat or clutch fan (if you have one).

jrock · « **Reply #10 on:** Jun 17, 2009, 10:33:04 PM »

Quote from: DeadlyPeace on Jun 17, 2009, 10:30:01 PM

Then I'd say thermostat or clutch fan (if you have one).

I was thinking clutch fan but why would it be stay cool driving around town and not on the highway.

potter85 · « **Reply #11 on:** Jun 17, 2009, 10:37:24 PM »

water pump? mine did weird things when the water pump went out....

jrock · « **Reply #12 on:** Jun 17, 2009, 10:41:36 PM »

Just replaced ~5000mi ago. Cooling issue started ~500mi ago. Actually started after I found my #3 spark plug wire (Accel) fried and then replaced it with a cheap Auto Lite but recently switched them all to the Auto Lite.

DeadlyPeace · « **Reply #13 on:** Jun 17, 2009, 11:08:21 PM »

Quote from: jrock on Jun 17, 2009, 10:33:04 PM

I was thinking clutch fan but why would it be stay cool driving around town and not on the highway.

When running higher RPM's the fan can't keep up with the engine and will spin slower then it should. Usually you can check it by spinning the fan and seeing how easy it turns.

BTW, best to stick with NGK plugs.

fordh8r · « **Reply #14 on:** Jun 18, 2009, 12:15:07 AM »

Generally, it should run cooler at higher speeds since you would have the air moving through the radiator to cool the engine. But at lower speeds the fan is needed in place of the rushing air at speed to cool the radiator.

If it runs cooler at lower speeds (less heat generated at lower RPMs and lighter loads) I might guess the fan clutch is working. Since it runs hot at higher speeds as you described, (when more heat is generated by the engine, I.E. more engine load and higher RPM) if the radiator is not efficient enough it may want to run hotter.

Is the radiator full of mud or a lot of crud like bugs, birds, small animals or children? Even heavy amounts of dirt build up will cause problems like you described. If so, you can blow out the crud with compressed air. You'll be amazed how much crap will come out of a radiator. Especially if you've spent any amount of time on dirt roads.

Sounds like it's probably something simple.

79coyotefrg · « **Reply #15 on:** Jun 18, 2009, 08:34:08 PM »

very likely the engine is running lean

kneedownnate · « **Reply #16 on:** Jun 18, 2009, 08:59:20 PM »

Quote from: fordh8r on Jun 18, 2009, 12:15:07 AM

Generally, it should run cooler at higher speeds since you would have the air moving through the radiator to cool the engine. But at lower speeds the fan is needed in place of the rushing air at speed to cool the radiator.

If it runs cooler at lower speeds (less heat generated at lower RPMs and lighter loads) I might guess the fan clutch is working. Since it runs hot at higher speeds as you described, (when more heat is generated by the engine, I.E. more engine load and higher RPM) if the radiator is not efficient enough it may want to run hotter.

Is the radiator full of mud or a lot of crud like bugs, birds, small animals or children? Even heavy amounts of dirt build up will cause problems like you described. If so, you can blow out the crud with compressed air. You'll be amazed how much crap will come out of a radiator. Especially if you've spent any amount of time on dirt roads.

Sounds like it's probably something simple.

No offense whatsoever to anybody else, but DING DING DING! My 2wd has a bit of crusty buildup in the radiator and runs cooler at lower speeds but runs hotter on the freeway, and even hotter towing. My radiator is a little plugged and isn't flowing what it should, period. If I had it rodded out I can absolute guarentee my truck would run cooler.

jrock · « **Reply #17 on:** Jun 18, 2009, 10:34:32 PM »

Hmmmm. Well I didn't get to do anything today cuz of my running around but tomorrow, tomorrow I will get to it.

hilux-1983 · « **Reply #18 on:** Jun 18, 2009, 10:41:44 PM »

jrock · « **Reply #19 on:** Jun 21, 2009, 04:41:10 PM »

Took out the thermostat and boiled it with a new thermostat. The old opened but only a 1/4in while the new opened 1/2in. I think I got the problem. Thanks for the help everyone. I won't know if the problem's fixed until I go for a nice long drive. I'll get back to you with the results.

fordh8r · « **Reply #20 on:** Jun 21, 2009, 05:10:17 PM »

That would be simple enough.

jrock · « **Reply #21 on:** Jun 21, 2009, 05:37:49 PM »

Your telling me.

jrock · « **Reply #22 on:** Jun 24, 2009, 11:15:16 PM »

Quote from: fordh8r on Jun 21, 2009, 05:10:17 PM

That would be simple enough.

You jinx

The problem is still there. I really need to look in the radiator.

fordh8r · « **Reply #23 on:** Jun 24, 2009, 11:29:42 PM »

Quote from: jrock on Jun 24, 2009, 11:15:16 PM

You jinx The problem is still there. I really need to look in the radiator.

Although, I never mentioned anything about the thermostat.

Just remember not to just look inside the radiator but the outside too. Anything that plugs the radiator core exterior will cause you problems. If you can, used compressed air to blow through the radiator from the Back (fan side) and watch to see what comes out. It might surprise you.

jrock · « **Reply #24 on:** Jun 24, 2009, 11:46:26 PM »

Haha

. I shall do my best to thoroughly clean my radiator and get back with more results.

fordh8r · « **Reply #25 on:** Jun 24, 2009, 11:50:55 PM »

jrock · « **Reply #26 on:** Jun 28, 2009, 09:49:08 PM »

New results. After taking a good strong hose to the front of my radiator I was able flush out quite a bit of dirt

. Thanks again for the tips

. I'm pretty sure the issues been fixed, my truck takes for ever to heat up again

. $Beer Chug\'n$

fordh8r · « **Reply #27 on:** Jun 28, 2009, 09:56:03 PM »

Cool!

(pun intended)

kneedownnate · « **Reply #28 on:** Jun 28, 2009, 10:27:10 PM »

Good deal man

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