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Th400 and no speedometer

Old Jun 6, 2015 | 07:31 AM
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Originally Posted by George C....
easiest way is to just use the front ABS sensor and have the revs per mile corrected to match the correct speed of vehicle

no reason what so ever to over think and spend more money then needed

Use the front abs sensor wiring and wire it to the speedometer wire is what your saying George. ?
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Old Jun 6, 2015 | 07:33 AM
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Originally Posted by gamble686
Are you intentionally ignoring George?
Not intentionally.
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Old Jun 8, 2015 | 12:21 AM
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NNBS has 4 wheel speed sensors you could maybe hit one of the rear speed sensors for a true rear wheel speed instead of reading it off the front.
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Old Jun 8, 2015 | 11:06 AM
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Originally Posted by 01WS6/tamu
Call your nearest gm dealer and order a speed sensor, reluctor wheel and electrical pigtail harness for a 1988-90 c1500 4.3 v6 TH-400 auto tranny or if that confuses them tell them a 90 model SS454 with 400 auto tranny.
Pull the tail housing remove the worm gear drive and chunk the drive sender. Heat the tone ring up with a torch then carefully slide it on. Install the sender into the tail housing wire it up and ready to go all GM parts.
Thats how they did mine.
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Old Jun 8, 2015 | 02:43 PM
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Originally Posted by LSX Power Tuning
Thats how they did mine.
I've been told discontinued but I'm not giving up
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Old Jun 8, 2015 | 02:44 PM
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Originally Posted by 01WS6/tamu
NNBS has 4 wheel speed sensors you could maybe hit one of the rear speed sensors for a true rear wheel speed instead of reading it off the front.
Definitely worth a shot
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Old Jun 8, 2015 | 07:28 PM
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Parts are all over ebay for OEM GM if they are in fact discontinued just get the part numbers.
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Old Jul 10, 2015 | 08:09 AM
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So I wired my vss to my front left abs sensor and I have no speedo. I figured id at least have something and it be way off.. I have nothing I searched for write ups but haven't found my answer. Anyone know what I need to do exactly with efilive? Much appreciated
Ryan
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Old Jul 10, 2015 | 08:57 AM
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the VSS is nothing more then a pulse counter, the abs ring is nothing more then a pulse wheel just like that pulse wheel that is on the trans shaft

if the wires are wired correctly then its just a matter of what counts and revs per mile you need
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Old Jul 10, 2015 | 11:56 AM
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From the wiring diagram on a nnbs with a 4l60 it said purple and green wire was my vss. I wired those two wires straight to the left front abs. I have nothing no matter how fast I go. Seems odd to me lol
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