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tach signal

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Old Aug 21, 2010 | 10:45 AM
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Default tach signal

so i just swapped my car over to a th400 and in the process i did some weight reduction. the problem i noticed last night at the track was that the shift light was no longer working. so today i did some searching on here and come to find out the pin#10 ( white wire ) where my light is getting the signal from also is linked to the cruise control which i removed. where else can i tap into the tach signal or what would even be better is how do i remedy the situation so i can use the wire its currently connected to? it seems as if my factory tach is way off. thanks for the help.
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Old Aug 21, 2010 | 12:17 PM
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is the tach wire spliced in near the computer or what?
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Old Aug 21, 2010 | 02:49 PM
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dude i am going through the same thing right now. i took off my cruise control and aftermarket tach wont work now. the stock tach is fine but my 5in auto meter is wayyy off
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Old Aug 21, 2010 | 03:36 PM
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for some reason it started working again. although it is an unexplainable phenom. therefore i cant give you any insight. good luck.
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Old Aug 21, 2010 | 03:37 PM
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lol i just figured out my problem. i didnt have the tach set on 4cyl mode now its fine
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Old Aug 21, 2010 | 08:35 PM
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i got my brake and everything else wired up today. fast forward to a few hours ago. i went to the track to try to run on the brake and low and behold the shift light didnt work again. this thing is trying to **** with me. worked fine in the garage then quit at the track. im gonna take it off the pcm and try to connect it to a coil tomorrow and see if that helps.
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Old Aug 21, 2010 | 08:49 PM
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damn. thats how it usually works tho lol
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