Running new ground wires
#1
Full Member
Thread Starter
Running new ground wires
Everytime i go to start my FD i always get the click click and then finally starts on like the 3rd or 4th attempt, sometimes more. Then when it does crank its barely turning like 150rpm. Brand new battery, starter, good battery voltage. The owner before me had relocated the battery into the rear bin. The thing is theres like 5 or 6 ground wires going all over the car and they are pretty small. For example i have 2 ground wires that are fastened to the top of the firewall which has paint on it, and another ground comes out of that same spot, and hooks to the intake manifold. Then i have 2 more that ground to that same spot on the manifold. And theres another one going to god knows where haha. Thing is what grounding points do I really need, and how should i route everything? Obviously i should go with less wires, but bigger and to good grounding spots but i dont know whats really needed. Any tips appreciated! Thanks
#4
Full Member
Thread Starter
Click/click/start problem??? Here you go! https://www.rx7club.com/3rd-generati...-relay-872841/
#6
Full Member
Thread Starter
Yep still didnt help, just a question though how could one starter be weaker than a different one? Like it seems a motor could only work or it doesnt? Just curious! Thanks
#7
Rotary Enthusiast
Starter motors have "brushes" in them which wear down over time.
They (the brushes) are pushed against, (with springs), and transfer the electricity to "the bit that spins" inside the starter motor. They are made from a soft carbon/graphite material. Most good auto parts store should stock a range of sizes. They are somewhat universal.
When they wear down to a certain point, they dont push hard enough against "the bit that spins" anymore, which means they no longer transfer electricity to it properly, which means it dosen't spin properly or with enough grunt to turn the engine fast enough.
Its not dissimilar to our apex seals..they are pushed out by springs all the time, and they wear down untill they no longer hold enough compression. In the brushes case they wear down untill they no longer transfer enough electricity to the arpeture (the bit that spins) because they are TOO SHORT.
Our headlight motors also have "brushes" in them which wear down and can be swapped out.
edit; this is not an FD starter but its exactly the same principal. They look the same. Those bits that stick out into the middle are the "brushes"
They (the brushes) are pushed against, (with springs), and transfer the electricity to "the bit that spins" inside the starter motor. They are made from a soft carbon/graphite material. Most good auto parts store should stock a range of sizes. They are somewhat universal.
When they wear down to a certain point, they dont push hard enough against "the bit that spins" anymore, which means they no longer transfer electricity to it properly, which means it dosen't spin properly or with enough grunt to turn the engine fast enough.
Its not dissimilar to our apex seals..they are pushed out by springs all the time, and they wear down untill they no longer hold enough compression. In the brushes case they wear down untill they no longer transfer enough electricity to the arpeture (the bit that spins) because they are TOO SHORT.
Our headlight motors also have "brushes" in them which wear down and can be swapped out.
edit; this is not an FD starter but its exactly the same principal. They look the same. Those bits that stick out into the middle are the "brushes"
Last edited by 96fd3s; 04-28-14 at 01:28 AM.
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#8
Full Member
Thread Starter
Ohhhh okay that makes sense then. I always wondered how a bad starter could turn slow, i thought a bad one would just stop all together. Hmm i bought one from autozone maybe i should just get an oem mazda one, worth the extra $100 or so for the peace of mind
#9
Full Member
Thread Starter
And i like buying oem parts just for the fact of supporting mazda's FD parts, especially while they still make them for us and while theyre still around haha. Well i bought some 2/0 gauge wire to run a new ground from the battery. Should i just run it straight to the block?
#11
Full Member
Thread Starter
Okay so from the negative on the battery to the frame, then one from engine to that same spot. Question, why do you have to have 2 ground wires (why have 2 ground wires, from the block and to the chassis?) does it really make a difference vs just grounding to the frame only? Also i was reading some more threads and is there supposed to be another ground from the battery to the starter? Thanks!
#12
Rotary Enthusiast
iTrader: (5)
Okay so from the negative on the battery to the frame, then one from engine to that same spot. Question, why do you have to have 2 ground wires (why have 2 ground wires, from the block and to the chassis?) does it really make a difference vs just grounding to the frame only? Also i was reading some more threads and is there supposed to be another ground from the battery to the starter? Thanks!
Also, you want to ground to the frame. Perhaps not all in the same spot as you could run into issues if that particular ground on the frame isn't grounding for whatever reason, hence multiple grounds.
You want to have at least 2 ground from the engine to the frame. Granted to engine is made of metal, but electricity isn't going to flow very well across engine parts so it's just safer to install multiple grounds.
I had an issue once when I didn't ground my block properly and my SS clutch line was touching my frame. It grounded out, smoked and melted and I bled fluid straight through. I had to replace it. Needless to say, i'll never make the mistake of not properly grounding again.
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befarrer
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08-22-15 05:52 PM