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Old 03-09-2023, 05:36 PM   #1
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Tachometer 1997 Bluebird TC2000 FE

Hi, new here and instantly asking for help. My 1997 Bluebird TC2000 FE 5.9 12 valve Turbo charged Cummins with 545 Alison transmission is giving me trouble. We swapped out the transmission (it would only move backwards) and everything was good. Then the altenator died. Not charging and beeping from the dash.
Swapped it out, hoses, thermostat, water pump, belt, Harmonic balancer, front seal kit, KillerDowelPin retainer, put it back together and RPM needle moved once, slightly. Any ideas?
My electronic, yet analog, cluster is still hanging loose.

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Old 03-09-2023, 07:05 PM   #2
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Year: 1990
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Engine: Detroit 6-71TA, 10 sp.
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Is it an alternator driven tachometer? Mine is and somebody had replaced the alternator without hooking the tach wire back up.

Also, if there's a range selector on the back of the tach and it gets turned slightly away from the correct setting it can make it act funny. The range selector on my teleflex tach occasionally gets bumped or jiggles out of position, resulting in a single 'blip' of movement on the needle, then nothing.
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Old 03-10-2023, 05:20 AM   #3
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Hi, thank you for your reply. I don't know if it is altenator driven. I have to trace the wires. The new altenator has this: "Voltage regulator protection - load
dump protected against transient
voltage spikes avoiding potential battery damage".
The dash cluster is electronic and old. I attached a pic of the back of the tach.
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Old 03-10-2023, 09:39 AM   #4
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Check to see if you have a tach sensor in the flywheel housing about the 10 o'clock position. Maybe it was unplugged and forgotten about during the transmission swap.

Otherwise it might be alternator driven, I can't recall off the top of my head.
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Old 03-10-2023, 01:43 PM   #5
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Thank you, I'll check.
Nothing connected to the bell housing or the spacer.
I'm pretty sure the tach was working after the transmission swap and before the altenator died. The new altenator has an internal voltage regulator. The original one probably didn't.
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Old 03-10-2023, 02:24 PM   #6
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Thank you, I'll check.
Nothing connected to the bell housing or the spacer.
I'm pretty sure the tach was working after the transmission swap and before the altenator died. The new altenator has an internal voltage regulator. The original one probably didn't.
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