 Both Fans Run All the Time...Solution Question, 5SFE |
 Sep 3, 2013 - 12:34 PM
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Enthusiast  Joined Oct 25, '12 From Pennsylvania Currently Offline Reputation: 0 (0%)  |
Hi Guys.
Both of my 1997 2.2 5SFE fans run constantly, even after turning the ignition to "On" in the morning, but not starting the engine. A quick search here suggests the problem is the Engine Coolant Temperature Switch, located at the bottom rear of the radiator. Before draining my coolant, I thought that if this is the problem, disconnecting the wire from old and connecting it to the new without installing it into the radiator should keep the fans off with a cold engine (or just turning the ignition to ON without starting a cold engine). Does that sound about right to anyone? Also, does this look like the right part: http://shop.advanceautoparts.com/webapp/wc...bwd_18970379-p# It looks right to me, but Advance Auto has given me the wrong parts before.... Oh Yeah! Do the threads need Teflon tape, or any other type of sealant? TIA!!! |
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Sep 12, 2013 - 1:00 PM
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Enthusiast Joined Oct 25, '12 From Pennsylvania Currently Offline Reputation: 0 (0%) |
Yeehaaa..... Think I've got it. Found a troubleshooting diagram for the relays, and Fan Relay No. 1 looks like it should have continuity without power across terminals 1 and 2, and 3 and 4. I'm getting continuity between 3 and 4, but no continuity between 1 and 2. My son is an Avionics Tech in the USAF, and he concurs with my reading of the diagram, and the continuity test. I ordered a new relay from Toyota, and it should be here tomorrow ($83!). Here's to hoping my fans stop running when the lows are in the 40's this weekend.
 Diagram: http://bgbonline.celicatech.com/94_6gmanua...0four%20cyl.pdf EDIT!!! ARGHHHHH!!!! I thought I'd check fan relays No. 2 and No. 3, and tore the case off one, and crushed the case on the other!  I had the retaining tabs pulled out, but these relays were not nearly as robust as No. 1. Of course the local parts stores don't carry them, and Toyota can't order past 4pm. I can get them in by Saturday morning, and I'm sure that'll be another $100 minimum. Still trying to decide whether to kick myself or the car. 
This post has been edited by FrankB2: Sep 12, 2013 - 4:53 PM |
Posts in this topic
FrankB2 Both Fans Run All the Time...Solution Question Sep 3, 2013 - 12:34 PM
ILoveMySilly97 That's incorrect. If you buy a new one and don... Sep 3, 2013 - 1:33 PM FrankB2 I was hoping that just plugging it in would indica... Sep 3, 2013 - 1:52 PM Smaay QUOTE (ILoveMySilly97 @ Sep 3, 2013 - 11... Sep 3, 2013 - 2:41 PM FrankB2 I'm just about to leave for the parts store, a... Sep 3, 2013 - 3:07 PM FrankB2 Well.... That didn't work. I took the fan out,... Sep 3, 2013 - 4:22 PM Syaoran Your fans were most likely hardwired into the igni... Sep 3, 2013 - 5:12 PM Batman722 Mess with the AC at all lately ?
These is a press... Sep 3, 2013 - 6:18 PM FrankB2 Thanks Guys! I'll check for the pressure s... Sep 3, 2013 - 7:06 PM FrankB2 ARGHHHHH!!! I really did it now. I dec... Sep 4, 2013 - 1:56 PM Smaay check your ECU and wiring grounds. my All-Trac did... Sep 4, 2013 - 4:57 PM FrankB2 Hi Smaay,
It seemed weird that the idle was droppi... Sep 4, 2013 - 5:23 PM Roadrash I know its a different path to fix a problem.... b... Sep 6, 2013 - 11:17 PM FrankB2 Yeah! I saw one of those on Autozone's web... Sep 7, 2013 - 12:38 PM FrankB2 Update:
I tested the coolant temp switch in the ra... Sep 7, 2013 - 2:36 PM Galcobar Toyota designed the system so that if the fan temp... Sep 11, 2013 - 2:48 AM FrankB2 That's what I've been suspecting to be the... Sep 11, 2013 - 7:51 AM FrankB2 Double post... See post below. Sep 12, 2013 - 1:00 PM
Special_Edy You should pull the efi relay or another fan relay... Sep 12, 2013 - 10:00 PM |
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