Strange Starter Issue

Tech tips and how to's

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DCooke
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Re: Strange Starter Issue

Post by DCooke »

So, the roadster been sitting on the battery tender for an additional 8 days while I was on a big project at work. When I turned the ignition key this morning, I just got the "click", I tried turning the key 8-10 more times & it clicked each time, then it finally turned over & fired right up. It doesn't seem to be a low battery as I either get the "click" or it fires up instantly, I never get a slow turn over like a low battery would indicate. Could this be a weak or flat spot on the starter?
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Linda
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Re: Strange Starter Issue

Post by Linda »

If you have a gear reduction starter you can pull it and check the contacts in the solenoid. Did this with a Toyota starter. Very easy
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Re: Strange Starter Issue

Post by mraitch »

sounds like the solenoid is 'stuck'
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Re: Strange Starter Issue

Post by notoptoy »

Same old advice, clean the grounds and try again. I have seen the terminals corrode with a white powder/dust/crust that you cannot see. Wire brush the terminal, cable and bolt of both ends of the heavy ground at the starter. Otherwise I would suspect the solenoid.
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DCooke
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Re: Strange Starter Issue

Post by DCooke »

Ok, so what's the trick to getting to the starter to clean the connections? That thing looks impossible to get to. Anyone have a secret way to do this...or is pulling the engine faster :shock:
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Re: Strange Starter Issue

Post by Nissanman »

It is not easy but it can be done.
There was a "factory" modification years ago that specified removing the triangular brace adjacent the starter to make the job easier.
The spot welds were drilled out, the plate removed, starter serviced and replaced, plate replaced with self tapping screws.

Double check that the starter is faulty by "jumping" the solenoid terminal to 12V, thus bypassing the Ignition key completely.
Typical Starter Wiring Temporary Jumper.jpg
Using this method, you can jog the starter many times to see if it fails to fire up.
Just a little dab will do ya, causing the solenoid to operate and connect the HT terminals together.
Unlikely, but there may be a dead segment on the commutator and if the starter stops there it won't energise again.
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DCooke
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Re: Strange Starter Issue

Post by DCooke »

The "clicking" issue has gotten a lot worse, it takes 10-15 turns of the key to get one that will fire.
So, I decided to do a thorough cleaning of all the grounds. I started with the starter ground on the frame right next to the starter. The ground bolt on the frame came off a little too easy, so I cleaned the frame around the ground connection and torqued the bolt down and...voila, she started right up. I continued by cleaning the ground below the battery & the ground below the washer tank. I checked by starting the car multiple times & its now firing up much more consistently. I still got a couple of "clicks" even after the ground cleaning, but I think I'm on the right track here.
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Re: Strange Starter Issue

Post by dbrick »

If you're in doubt, use the negative clamps on a set of jumper cables. one end to the battery, other to engine ground or body ground etc. If problem goes away, there's the bad ground

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Re: Strange Starter Issue

Post by mikew »

I am having this exact same issue. Same symptoms as described. It has gradually gotten worse over the last 12 months. It's worse when cold. Have to repeatedly turn the key to start position until it cranks over properly. Sometimes takes 10-20 tries now. When warm usually turns over on second or third try.

Replaced the battery a while back but it made no difference.

So yesterday I decided to do some diagnostics... After checking and cleaning connections of the positive lead from battery to starter, I hooked a jumper lead from neg battery terminal to engine block to bypass any possible bad earth connections. Then I hotwired direct from battery positive terminal to ignition switch input on starter, and...

... the same symptoms.

So pretty sure now it's the starter motor.

Getting that starter off doesn't look like a fun job so I think my car might be off to Guru Lou soon!!

Cheers,
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Re: Strange Starter Issue

Post by nismou20 »

I had the same issue as well, suspected battery and ground wires. Turned out the 40 year old starter motor was just too tired. Got a new one from Stan the man, no more problems.
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Re: Strange Starter Issue

Post by mraitch »

Always good to source a spare alternator,water pump,starter motor and have them on the shelf. At some time they are going to go bad.
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Re: Strange Starter Issue

Post by Nissanman »

The electrical bits do wear but barring excessive tension on the drive pulley, the alternator usually will only require new brushes as would the starter motor.
Bearings are cheap so they are also replaced when the unit is off the car.
Nissanman, just trying to help.
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Re: Strange Starter Issue

Post by mraitch »

@nissanman - I get that, but I had an alternator seize on the way back from Williams a couple years back. Having a spare in the trunk/boot - would have made life much easier - but maybe just having spare brushes lying around (along with the knowledge of how to replace - of course).
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Re: Strange Starter Issue

Post by Nissanman »

A SEIZURE!
Now we know why they are belt driven :shock:
I had an AC compressor seize in my R33 Skyline.
Trashed the belt in about 2 seconds flat!
Nissanman, just trying to help.
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DCooke
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Re: Strange Starter Issue

Post by DCooke »

...ok, so it's been a 5 years since I replied to this post, but I suddenly started having the exact same issue issue I had a few years ago: Good battery, but only getting a solenoid click & no engine turn-over. So, as I did last time, I re-cleaned both ground wires, the one below the battery & the one next to the starter. But this time, this didn't solve the issue. I was starting to wonder if my 10+ year old starter had failed. I decided to remove the hot wires off the starter & realized they were pretty dirty & oxidized (black). I gave the post, washer, nut, and wire leads & connectors all a good scrubbing and a nice sanding with 210 grit sandpaper & then re-assembled. BAM, she fired right up! Sometimes it's the simplest things. Now back to my roadster top-down summer!
Dave Cooke
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1969 1600
2016 BRZ
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