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98 coupe tachometer jumping????? VIDEO INSIDE

   
Old 09-29-2011, 11:26 AM
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Default 98 coupe tachometer jumping????? VIDEO INSIDE
ok so heres the situation. i have a 98 coube with a b16a2 swapped in it on a p72 ecu and i have an 02 sensor code. When im giving the car throttle my tach jumps around like silly.This happens whether its in gear or in neutral. I dont feel it affecting the car all the time only when im in higher rpms and the car will hesitate a little and fall off. i have a vid i will try to attatch. any help is appreciated.


<iframe width="640" height="480" src="http://www.youtube.com/embed/Vhye1PnKJ6M" frameborder="0" allowfullscreen></iframe>
Last edited by Max McNasty; 09-29-2011 at 11:27 AM. Reason: title edit
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Old 09-29-2011, 11:30 AM
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Default Re: 98 coupe tachometer jumping????? VIDEO INSIDE
The tach signal comes from the igniter unit inside the distributor. It may be bad so have it tested.
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Old 09-29-2011, 11:40 AM
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Default Re: 98 coupe tachometer jumping????? VIDEO INSIDE
i replaced it a few months back.
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Old 09-29-2011, 11:42 AM
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Default Re: 98 coupe tachometer jumping????? VIDEO INSIDE
Test the blue tach wire running between the igniter unit and tach. Are all wires inside the distributor clean and tight?
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Old 09-29-2011, 11:51 AM
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Default Re: 98 coupe tachometer jumping????? VIDEO INSIDE
wires are good and tight but i will certainly check again. thanks for the help.
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Old 09-29-2011, 03:09 PM
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Default Re: 98 coupe tachometer jumping????? VIDEO INSIDE
any other advice? blue wire checks out good.
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Old 10-03-2011, 01:33 PM
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