even with elctric fan, im still running warm... - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 07-24-2001, 04:37 PM Thread Starter
 
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even with elctric fan, im still running warm...

i know we've about beat this subject to death, but its going to drive me crazy... i installed an electric fan last week and it has made my zook run at normal operating temperature while cruising slowly... this requires however that the fan stay on at all times while im driving... dont think that that should be nessacary... when i get on the highway however, it heats back up to about halfway... fan runs all the time on the highway too... fan also runs for about 5 minutes after i shut her down...

i dont know what else to do... should i take the zook into a radiator shop and ask them what they think? what are they going to tell me?

Steve [img]/wwwthreads_images/icons/cool.gif[/img]
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post #2 of (permalink) Old 07-24-2001, 06:00 PM
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Re: even with elctric fan, im still running warm...

Monitor engine with thermo probe obtain real temp values.

Test engine temp at different Rpm values.

Remove thermostate and test it operation.

Re-test engine temp. with no thermostate installed.

Test data obtain from above will solve your problem
or advance to next step water pump , clogged radiator
pressure testing.

Later



post #3 of (permalink) Old 07-24-2001, 06:00 PM
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May want to use distilled water in radiator.

TDS too high in most tap water will clog radiator.

Buy it $.60 gallon on sale at super market.

edited
Never use distilled water by itself in radiator.

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post #4 of (permalink) Old 07-24-2001, 07:10 PM
 
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Re: egine coolant

Distilled water may have no total disolved solids (TDS) but it tends to be more corrosive to metal since it seeks equalibrium and will leach metal from engine components. TDS in engine coolant isn't always bad.

-Farther
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post #5 of (permalink) Old 07-24-2001, 07:33 PM
 
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Re: even with elctric fan, im still running warm...

Check your timing and most importantly, check for intake air leaks. With the engine having an aluminum block the radiator is just added protection. Try and remember how fast the engine cooled off before you had any problems. Checking the thermostat would also be a good start. Ain’t no Snake Oil to fix this problem, just basic logic. The intake leak is very important because the engine runs so lean with out any leaks. If you push it and keep driving the poor thing, you might melt a piston or something. IMHO, Bobcat.

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post #6 of (permalink) Old 07-24-2001, 07:42 PM
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Re: egine coolant

Hi father you right, ions can charge water and make it
a mildly corrosive to metal. What really should have said
I use water PH of 7 neutral No TDS with coolant 50/50
mixture.



post #7 of (permalink) Old 07-25-2001, 01:24 AM
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Re: even with elctric fan, im still running warm...

fan clutch is bad

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post #8 of (permalink) Old 07-25-2001, 03:12 AM
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Re: even with elctric fan, im still running warm...

FYI, I have a 1600, 8-valve with the old brass radiator and an electric fan. I have no problems what-so-ever at slow or highway speed. In fact, the only time I need the fan is when I'm sitting at idle for more than a few minutes. So check your coolant system and intake system for a lean condition.

1988.5 Zuk: OD Green Paint, ARB Bumper, OME Lift, 1.6 engine, ISKY DP Cam, Weber Carb, CF II Clutch, 4.16 Transfer, etc.
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post #9 of (permalink) Old 07-25-2001, 03:14 AM
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Re: even with elctric fan, im still running warm...

I recognise you probably have a fault, but as a stop gap you could try some of that slippery red stuff in yer rad that makes engines run cooler. Can't think of the name.
A M'cycle shop told me they had to drain their race bike and start again with much less additive as the bike wasn't running hot enough.
Just a thought.
Alfie.

post #10 of (permalink) Old 07-25-2001, 09:50 AM
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Re: even with elctric fan, im still running warm...

just a coply more questions.
which side of the raditor is your fan on?
do you have it wired to where it pushes or pulls air?
if its on the iside you need it pulling air in. if its on the outside it needs to be pushing air in
are you sure its running hot ? what i mean is are you going by factory gauge or do have aftermarket .
is your raditor stoped up is it circlating good.
when i first did my electic fan setup i put it on the ouside pushing air in with factory clutch fan it still ram warm on me. So when i installed my undrive pulley i pitched clutch fan moved electric fan on the inside pulling air in .it still ran a little warm sometimes so i pulled raidtor of took it to the radtoir shop and shure enough it was stoped up good they had to pull the tanks off and clean each core out . and also on pulling it out i noticed it all the fins where stoped up with mud clean that out with a water hose . so finally got it all back togther now she runs cool! a day long with no problems . hope this helps .

RUN IN TO YOU LATER
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