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TR8 Starter Motor

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jaltman636@gmail.com

TR8 Starter Motor
« on: December 16, 2017, 02:19:22 PM »
So, I think my starter motor has died.  Please refresh my recollection as to

whether I can get the old one out and the new one in without removing the

passenger side tail pipe. I am pretty sure it's actually the starter motor

and not the intermediate wiring.  I tried a new relay and that didn't help.

I wiggled the wires about a bit.  Recently, I had a some "unusual noises"

right after cold starting and the last couple starts were particularly

anemic before not working at all.



 



While I am lounging in the mountains for the weekend, I am conveniently

pointing downhill so I can bump start it to get going home tomorrow.



 



 



Jim Altman



jaltman636@gmail.com



 

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jaltman636@gmail.com

Re: TR8 Starter Motor
« Reply #1 on: December 16, 2017, 05:29:44 PM »
Thanks all for the comments.  Wiring and battery are fine, power to

everything, i.e. headlights and all are fine. Just put a new ground wire

from battery to body. Volt meter is normal after I bump start the car,

alternator is an almost new Saturn alt. Given the odd sounds it made on last

crank, I have good confidence it's the starter, but will inspect the wiring

more carefully on return to the big city and a tad warmer weather after

tomorrow.



 



The stock starter is long gone and the starter in there is one of the newer

hi-torque, but by newer I mean 7 to 10 years old.



 



 



Jim Altman



jaltman636@gmail.com

Dave

Re: TR8 Starter Motor
« Reply #2 on: December 17, 2017, 08:21:58 AM »
If you have the stock exhaust system all you need do is drop the cat.  If you have headers, well....



 



 



Dave Massey

Creig Houghtaling

Re: TR8 Starter Motor
« Reply #3 on: December 17, 2017, 12:12:43 PM »
Jim,





Pipes on the passenger side need to be moved to install a starter.  They don't

necessarily have to be removed.  I think I was able to disconnect at the

exhaust manifold and swing the pipes down enough to replace the starter.





It sounds like your starter is done.  Mine acted like a bad battery for about

a year before it went totally out.  When my battery was freshly charged the

starter would crank moderately well.  When the battery was down only slightly

it would turn over just barely enough to start.  Yours sounds like it went

more quickly.  If you want to verify 100% you don't have any wiring or relay

issues, make sure your big positive cable to your starter is clean and tight.

Then run a positive directly to your starter bypassing your ignition switch.

If you get the same results you need a starter.  (One time I bought a new

starter, and when I went to take the old one off I found the main positive

cable loose at the starter.  Tightened it up and found the starter was OK.)





Creig

"Karl Knowles"

Re: TR8 Starter Motor
« Reply #4 on: December 17, 2017, 03:35:50 PM »
I would also run a jumper cable negative to the engine block to make sure

you have a good ground too.  You could have a bad frame to engine ground

strap.  It's easy to overlook as it's out of sight/out of mind.



Karl

Tallahassee, FL

"Jim Altman"

Re: TR8 Starter Motor
« Reply #5 on: December 18, 2017, 08:38:19 AM »
So, thanks again to all for the comments. Assuming:



 



1)      That I have established good connection from the battery + to the

starter; and,



2)      That I have established that there is a good ground from block to

battery -



 



Then I should be able to jumper 12 volts from the battery connection to the

white-orange wire connection on the starter motor and the starter ought to

actuate, right?



 



 



Jim Altman



jaltman636@gmail.com



 



From: jaltman636@gmail.com [mailto:jaltman636@gmail.com]

Sent: Saturday, December 16, 2017 5:29 PM

To: 'j t' <jat1127@hotmail.com>

Cc: 'Tr8' <tr8@mercury.lcs.mit.edu>

Subject: RE:  TR8 Starter Motor



 



Thanks all for the comments.  Wiring and battery are fine, power to

everything, i.e. headlights and all are fine. Just put a new ground wire

from battery to body. Volt meter is normal after I bump start the car,

alternator is an almost new Saturn alt. Given the odd sounds it made on last

crank, I have good confidence it's the starter, but will inspect the wiring

more carefully on return to the big city and a tad warmer weather after

tomorrow.



 



The stock starter is long gone and the starter in there is one of the newer

hi-torque, but by newer I mean 7 to 10 years old.



 



 



Jim Altman



jaltman636@gmail.com <mailto:jaltman636@gmail.com>