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Possessed fan killing my car's battery

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Forum Name: Miscellaneous - Off Topic
Forum Discription: Topics that just don't fit anywhere else.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=7733
Printed Date: May 14, 2024 at 4:05 PM


Topic: Possessed fan killing my car's battery

Posted By: cpgoose
Subject: Possessed fan killing my car's battery
Date Posted: January 06, 2003 at 11:38 AM

'92 Integra, automatic, 95K miles

Hi, any help would be great, because it's like playing
the lottery when I go to start my car lately.

The past couple of months, I noticed my fan coming on
when I shut off my car. Everyone said it's supposed to
do that, and that it's cooling the car. So I went with that...
I didn't really notice anything out of the ordinary.

The past couple of weeks, though, I noticed if I just
put the key to the ACC position, and then OFF (without
starting the car), the fan will come on. Hmmm...

Now, to the possessed part. Yesterday, I was shoveling
outside and heard my fan on. I don't know how long
it was running, but I had driven the car an hour ago,
and thought that could be it.

I forgot about it, came out this morning, and had a dead
battery. For all I know, the fan could have been running
all night long.

What sort of things can I check? Is there a way I can
disable the fan for the meantime so I can at least know
the car will start for the next couple of days?
I know there's 2 fans, but I'm not sure which is which yet.

THANKS




Replies:

Posted By: PLAYER69
Date Posted: January 06, 2003 at 11:51 AM

check the relay.  Actually, just replace the relay they are cheap.  You can also just pull the relay to desable the fan if you wish.

Now for the hard part....  Finding the relay :)  posted_image





Posted By: Velocity Motors
Date Posted: January 06, 2003 at 12:20 PM
I had this problem with an Accord. The relay was fine...... it was actually a sensor that kicks in the secondary fan to cool the engine after shutdown and while driving so that you don't over heat the vehicle. You will need a Honda/Acura Technician to look at this and replace the sensor that is damaged. I think the cost on the part was about $ 75.00 ( Canadian ) + $ shop rate of about 30 minutes to replace it.

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: cpgoose
Date Posted: January 24, 2003 at 10:53 AM

Ok, still sort of having the same problem.

I found 2 relays by the condensor fan (the one that stays on),and 1 relay by the radiator fan (the one that I'm not sure if it ever comes on).  All 3 relays were identical, and so was their test that was in the HELMS manual.  Here's what it said:  The relays had 4 terminals each....A, B, C and D.  There should be continuity between C and D, and then if you connect C and D to power and ground, there should be continuity between A and B.  Well, the respecitively, the first test didn't work on all three relays, but the second test did.  Go figure.

Also, it said I could unplug the fan's plugs, and give it ground and power to see if the fan runs smoothly.  I did it for the radiator fan, and it was fine.   I didn't do it for the condensor fan since I know it runs fine....plus the plug was harder to get to.

I also found a test on how to test the ECT gauge from the engine block.  If you pull the plug off it, and ground it, then put the key to position II, the gauge on the dash should go to HOT.  It did, so I'm sure that's ok.

Also, my gauge never used to move.  Now, if I sit idle, it will move too much.  I bought a new thermostat, but haven't put it in yet since it looks like a tricky replacement.

I've now been told to replace (or test) the "Cooling Fan Timer Relay", as  it seems to be a common problemo.  That part is $150!  I think I'll do the thermostat first, and see what happens...they maybe I'll replace the "Timer".  Ay caramba.  What's funny is that different Acura dealers are giving me different prices for the same part.





Posted By: mack6820
Date Posted: January 27, 2003 at 8:41 AM
 I had that problem once, For a quick fix, I just wired the hot wire from the fan motor to my ignition wire. So everytime I turned the ignition on, the fan would kick on, and of course it would go off when I turned the car off.




Posted By: cpgoose
Date Posted: January 27, 2003 at 8:44 AM
Did you actually drag the wire from the fan through the firewall to your ignition wire from the ignition switch harness....or did you find an igntion wire near the fan?




Posted By: DeathsJester12V
Date Posted: February 14, 2003 at 12:53 AM
Hey goose, when you get some $$$ together, take it into the shop...sounds like you got a fried sensor, or the computer is tripping.  if it all comes back ok....I'll give oyu the number to a good Exorcist...

-------------
Đễẳ†ђş 12\/ Ĵęśŧē®™




Posted By: cpgoose
Date Posted: February 14, 2003 at 5:49 AM

haha, I guess I forgot to post what happened.  By the way, the shop is a complete last resort for me....I hate paying $600 for something I can do for $100.

It turns out the fans were malfunctioning due to a bad Cooling Fan Timer Relay.  I learned that they were known for dying out in my car after a while.  I found the Timer (under the dash, behind the instrument panel, and to the left of the heater).  All I did was touch it and the fans went on, and touched it again, and they went off.  I opened it and moved the circuit board a little, and the fans kept going nuts.  Bad module.  Went to Acura, bought a new one for $130, reinstalled it (just plugs in), and bam.....no more fan problemos.....and no more dead battery.  I even tested it by turning the AC on and off, and the fans work appropriately.  SWEEEET.






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