 Tach problems, 6 conversion |
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| GulleyGulley |
 Apr 13 2014, 07:03 AM
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#1
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Member  Group: Members Posts: 67 Joined: 12-March 12 From: CNY Member No.: 14,243 Region Association: None  |
Installed a 86 3.2 into my car with a tach from the donor. Everything works but the tach. It reads about double what it should. Any ideas why it's off?
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| GulleyGulley |
Apr 14 2014, 10:04 AM
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#2
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Member Group: Members Posts: 67 Joined: 12-March 12 From: CNY Member No.: 14,243 Region Association: None |
I'll have to pull it out to look at the back of the tach. The wiring from Patrick Motorsport has the tach wire label from the DME. I wonder if I have it going to the wrong terminal on the tach. Can't remember which one, need to find my diagrams again.
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| worn |
Apr 14 2014, 10:08 AM
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#3
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can't remember Group: Members Posts: 3,195 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest 
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QUOTE(GulleyGulley @ Apr 14 2014, 08:04 AM)  I'll have to pull it out to look at the back of the tach. The wiring from Patrick Motorsport has the tach wire label from the DME. I wonder if I have it going to the wrong terminal on the tach. Can't remember which one, need to find my diagrams again. The fact that it seems to read double suggests something is wrong at a basic level making it count a double signal rather than a single. I am in the same boat, but a ways behind you. Would you mind posting pictures of the sensor set up? Or did you go with the 915 transmission? |
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Posts in this topic
GulleyGulley Tach problems, 6 conversion Apr 13 2014, 07:03 AM
914itis If the tach is from a 4, you will need a tach adap... Apr 13 2014, 07:08 AM SLITS this is what you would be looking for ...........
... Apr 13 2014, 08:05 AM JStroud He posted the tach is out of the donor, so I'm... Apr 13 2014, 08:11 AM
Qarl
He posted the tach is out of the donor, so I... Apr 13 2014, 08:32 AM toolguy Doesn't that need the transducer from the 911 ... Apr 13 2014, 09:21 AM ConeDodger That engine in it's native state uses a speed ... Apr 13 2014, 09:27 AM Timmyjr11 hi there, my dad is teaching me how to convert tac... Apr 13 2014, 09:52 AM timothy_nd28 You have many different options. You can buy a ta... Apr 13 2014, 10:55 AM Eric_Shea Nice work.
My new 10k tach seems to stall someti... Apr 13 2014, 11:02 AM timothy_nd28 Your not the only one with this issue, this is why... Apr 13 2014, 12:24 PM stugray If it is of any help:
I just spent the last few w... Apr 13 2014, 01:13 PM Steve Just get a 911 Tach. I used the same 911 tach wit... Apr 13 2014, 01:26 PM GulleyGulley The tach is from an 86 911. I'll have to check... Apr 14 2014, 04:58 AM AZ914 Gully, I have the same setup, 86 3.2 with the 86 t... Apr 14 2014, 09:43 AM stugray Any chance you are using a aftermarket CDI?
Some ... Apr 14 2014, 11:31 AM GulleyGulley Stock/rebuilt DME unit. Everything else is stock O... Apr 14 2014, 12:03 PM |
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