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3886 Posts in 1208 Topics- by 2247 Members - Latest Member: Steve Ahmann

May 23, 2012, 02:18:57 AM
Maintenance IssuesTR4 RangeOverdrive switch or relay faulty?
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Author Topic: Overdrive switch or relay faulty?  (Read 397 times)
motomadness1947
Newbie
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Posts: 19
« on: August 20, 2011, 11:32:56 AM »
I have a 1963 TR4 with overdrive.  The overdrive has been working well.  Yesterday I noticed when I switched to overdrive it did not shift and locking at my ammeter it was pegged full discharge.  When I flipped the switch back to overdrive off the ammeter went back to the correct light charging condition.   Okay I have a dead short.  Question is:  is this a symptom of a bad switch or relay.  If it is the relay: where is the relay located on the car.  thank you in advance

Bruce Fahnestock
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motomadness1947
Newbie
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Posts: 19
« Reply #1 on: August 21, 2011, 09:44:04 AM »
I found a wonderful article on line posted by Buckeye Triumphs    "A type overdirve troubleshooting tips"  Now to apply the procedure.  any of you Overdrivers may want to print out a copy.  it is really good
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Gary MI
Newbie
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Posts: 3
« Reply #2 on: August 21, 2011, 02:35:11 PM »
The relay is located in the passenger (LHD) footwell just behind the dashboard and above the transmission cover.

Gary
1961 TR4
CT 1547 L
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TR3driver
Full Member
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Posts: 245
« Reply #3 on: August 21, 2011, 06:05:50 PM »
IMO it is unlikely to be either the switch or relay at fault.  Could be the solenoid itself, but my guess would be that a wire is shorted to ground.
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Randall
58 TR3A TS39781LO :(now totaled Sad
56 TR3  TS13571L daily driver
71 Stag LE1473L waiting for engine rebuild
71 Stag LE2014LBW waiting for 4-speed rebuild
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