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obd2 tach signal?

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Old 04-09-2007, 02:53 AM
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Default obd2 tach signal?
i converted my obd1 harness to match the obd2 dizzy, but now am lost due to tach signal. anyone know how to correct this problem? tach is on the skiz.
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Old 04-09-2007, 01:07 PM
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Default Re: obd2 tach signal? (frstbte14)
Bump
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Old 04-10-2007, 02:08 AM
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Default Re: obd2 tach signal? (frstbte14)
Does nobody know?
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Old 04-10-2007, 08:20 AM
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Default Re: obd2 tach signal? (frstbte14)
For 99-00 Civic's, the tach signal comes out of the ECU (pin A19) and not the distributor like it did for the 96-98 model years.
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Old 04-10-2007, 11:59 AM
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Default Re: obd2 tach signal? (EE_Chris)
so how am i to run a tach on an obd2 engine running obd1 in an obd1 car?
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Old 04-10-2007, 12:44 PM
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you'll need to run the tach wire from the distributor to the driver's side shock tower plug.
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Old 04-10-2007, 12:45 PM
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Default Re: obd2 tach signal? (frstbte14)
EDITED for correctness: OBD2b distributors still use an ICM that has the tach output lead....just not connected.
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Old 04-10-2007, 12:56 PM
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Default Re: obd2 tach signal? (EE_Chris)
Okay, so its there, but not connected?
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Old 04-10-2007, 07:03 PM
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Default Re: obd2 tach signal? (frstbte14)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by frstbte14 &raquo;</TD></TR><TR><TD CLASS="quote">Okay, so its there, but not connected?</TD></TR></TABLE>
exactly.
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Old 04-11-2007, 11:36 AM
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Default Re: obd2 tach signal? (Relic1)
i'll take pics because i think we may be on different subjects.... so for clarification....
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Old 04-11-2007, 01:56 PM
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the blue wire from the distributor is the tach signal.
depending on which OBD1 harness you have, connect the tach wire to it.
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Old 04-12-2007, 08:28 PM
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Is it okay to connect the blue wire from the dizzy straight to the cluster?

bump - I have the same problem.
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Old 04-14-2007, 04:40 AM
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what color matching did you do to wire in the obd2 dist.? help me out been waiting for this for a month and no1 has answered yet.
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Old 04-14-2007, 07:18 AM
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Default Re: (jlfrnce)
OBD1_Pg1


OBD1_Pg2


OBD2a_Pg1


OBD2a_Pg2


OBD2b_Pg1


OBD2b_Pg2


Have fun matching wire colors.
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