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Manual conversion; hunting idle. 

 

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 Post subject: Manual conversion; hunting idle.
Posted: Mon Dec 13, 2004 3:15 pm 
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Guys my car has been converted to manual a while ago before i bought it. And it hunts quite alot of the time. Scotts840 told me there was a thread on here, but i cant find it, which solves this hunting problem. anyone out there help me?
cheers.
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Posted: Mon Dec 13, 2004 3:19 pm 
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the thread was probably lost in the crash of FM1

 

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Posted: Mon Dec 13, 2004 5:13 pm 
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whats hunting?

 

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Posted: Mon Dec 13, 2004 5:22 pm 
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chunkz wrote:
whats hunting?


the idle rpm changes, goes up and down, searching for the right level

 

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Posted: Mon Dec 13, 2004 5:24 pm 
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ah yes....
this happened to a mate of mine

how do you fix it?

 

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Posted: Mon Dec 13, 2004 5:32 pm 
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chunkz wrote:
whats hunting?


Called that because EEC is "hunting" for the correct idle. Basically fluctuating revs - up and down and up and down.

Caused byt many things.

eed-250 - i assume you're still running auto ecu? Anything done to trick it?

 

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Posted: Mon Dec 13, 2004 5:35 pm 
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chunkz wrote:
ah yes....
this happened to a mate of mine

how do you fix it?


depends on the car and what's causing it to do it
i.e. if you do a manual conversion and leave the auto ecu in and don't do anything to trick it, it might cause it. one FM1 there was a thread on how to trick the auto ecu which made the car run nice after the conversion

 

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Posted: Mon Dec 13, 2004 6:08 pm 
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um. im pretty sure its just the standard AUTO ECU and hasnt had anything done to it.
Id love it if someone could find the way how to trick it.
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Posted: Mon Dec 13, 2004 6:12 pm 
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Cant you just get a manual ECU and problem solved.

How much is a manual ECU new and secondhand?

 

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Posted: Mon Dec 13, 2004 6:31 pm 
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what model is it? Have you tried cleaning the throttle body? Is the base ignition timing set correctly? If it's an EF/EL if the base timming is set to high it will hunt. Also check no one has fiddled with the base idle that will cause it too on EBII-EL.

 

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Posted: Mon Dec 13, 2004 7:22 pm 
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mate we cant really help you if you dont give us some info
there is a way to trick the ecu into thinkings its in drive by usuing a resistor on to your TRANS TEMP LINE pin on your ecu. Basically the ecu can be tricked by putting a resistor on to the line and dropping it into teh drive voltage range

 

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Posted: Tue Dec 14, 2004 12:05 am 
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1994 ed 6cyl.
i would get the manny computer but it costs heaps..
how many resistors? what ohms neo nick?
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Posted: Tue Dec 14, 2004 12:12 am 
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the resistors in the temp wiring is to stop a EF-l going into limp mode and bringing the idle up and turning the fans on. i dont think a ED has that feature in the P.C.M. i have seen this on some conversions and not on others for some reason. best bet is to put a manual P.C.M in.
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Posted: Tue Dec 14, 2004 6:02 pm 
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Manual ecu aren't that dear I picked mine up for 195, They just tale a bit of hunt to find thats all.

 

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Posted: Tue Dec 14, 2004 9:08 pm 
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i have 3 ED XR6 manual computers for sale.
$225 and problem is solved :lol: :lol:
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