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Discussion Starter · #1 ·
On my drive back to Florida I began to think about DIY projects. One thing that made me think was a custom solution for the heat build up in the engine compartment and possible over heating of the ECU. I plan on doing some test later this week to measure how hot it gets in the compartment where the ECU is housed. <p>I wanted to know if anyone had any knowledge of this issue and/or is there a problem that should be addressed with the heat and ECU. Any knowledge or prior test would be helpful. Thanks<p>-Will<br>
 

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Re: Heat build up in the ECU compartment (Rangeball)

There is already a fan in the ECU compartment and not a problem
 

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to quote the classic phrase <i>"if it ain't broke, don't fix it!"</i><p><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 

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Discussion Starter · #4 ·
Re: (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>phuz</b> »</i></TD></TR><TR><TD CLASS="quote">to quote the classic phrase <i>"if it ain't broke, don't fix it!"</i><p><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"></TD></TR></TABLE><p>The idea came to me after a session on the track. It was 90 degrees F outside and the fan in the ECU compartment stayed on for ~15 minutes. I eventually took the cover off while parked in the shade to help it cool down. Just an idea.
 

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Re: (Rangeball)

The air for the existing fan is from the cabin. On the track, you probably had the AC off, windows open, so the ambient was going into the CPU box.... <p>
 

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Discussion Starter · #7 ·
Re: (JimLill)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JimLill</b> »</i></TD></TR><TR><TD CLASS="quote">The air for the existing fan is from the cabin. On the track, you probably had the AC off, windows open, so the ambient was going into the CPU box.... <p></TD></TR></TABLE><p>Didn't know that. Nice tid bit. With the track setup then (windows down, AC off) does the ECU over heat?<p>Maybe saying over heat is a bad word. Most electronics have a relative heat threshold. I am just wondering if that ECU is designed to take the high heat that our cars have under the hood. Especially on the track!
 

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Re: (Rangeball)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Rangeball</b> »</i></TD></TR><TR><TD CLASS="quote">I am just wondering if that ECU is designed to take the high heat that our cars have under the hood. Especially on the track!</TD></TR></TABLE><p>Track = ?<p>Drag Strip, AutoX, Road Track?<br>
 

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Re: (Rangeball)

That fan is device 6/44. Pin 1 on it's connector goes to a + feed from fuse 11B/8. Pin 2 goes directly to the ECM on its B:48.<p>You might be able to add a switch to override the ECM control of the fan and run the fan continuously to be proactive with the cooling. <p>Pin 2 is a black wire from the fan, use an SPDT switch to select ECM/auto control or ground it for continuous run.<p>
 

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Re: (JimLill)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JimLill</b> »</i></TD></TR><TR><TD CLASS="quote"><br>You might be able to add a switch to override the ECM control of the fan and run the fan continuously to be proactive with the cooling. <br></TD></TR></TABLE><p>more importantly, if that fan fails, will it throw a code?
 

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Discussion Starter · #12 ·
Re: (JimLill)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JimLill</b> »</i></TD></TR><TR><TD CLASS="quote">That fan is device 6/44. Pin 1 on it's connector goes to a + feed from fuse 11B/8. Pin 2 goes directly to the ECM on its B:48.<p>You might be able to add a switch to override the ECM control of the fan and run the fan continuously to be proactive with the cooling. <p>Pin 2 is a black wire from the fan, use an SPDT switch to select ECM/auto control or ground it for continuous run.<p></TD></TR></TABLE><p> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p>My initial idea was to modify a liquid cooling system (commonly found on computers which I have some experience in) but then I realized this was probably WAY overboard. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> <p>I am going to do some test this weekend with a temperature gauge to see how hot it is getting in there. I figured this is a good time of year to measure the temperature, because it is HOT!!!
 

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Re: (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>phuz</b> »</i></TD></TR><TR><TD CLASS="quote">more importantly, if that fan fails, will it throw a code?</TD></TR></TABLE><br>Yes. There are ECM overtemp errors as well.<p>Tom.
 

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Re: (Rangeball)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Rangeball</b> »</i></TD></TR><TR><TD CLASS="quote"> I am going to do some test this weekend with a temperature gauge to see how hot it is getting in there. I figured this is a good time of year to measure the temperature, because it is HOT!!!</TD></TR></TABLE><p>Spend the $ to get something like a Fluke 16 meter. I think ipD has a cheapy like it.<p>
 

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Discussion Starter · #15 ·
Re: (JimLill)

This guy... <A HREF="http://ipdusa.com/ProductsCat.aspx?CategoryID=330&NodeID=4600&RootID=629" TARGET="_blank">http://ipdusa.com/ProductsCat....D=629</A>
 

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Re: (Rangeball)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Rangeball</b> »</i></TD></TR><TR><TD CLASS="quote">This guy... <A HREF="http://ipdusa.com/ProductsCat.aspx?CategoryID=330&NodeID=4600&RootID=629" TARGET="_blank">http://ipdusa.com/ProductsCat....D=629</A></TD></TR></TABLE><p>That's it.........
 
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