Help! Tach and coil issue
03-15-13, 02:09 PM
#1
Serotonin Satellite
Thread Starter
Help! Tach and coil issue
A little while ago I had some major hesitation problems with my 87 NA. With the way my tach was acting it was suggested I jump my coils with their bullet connectors to run the tach off the other coil. After running a few days with my coils jumped I noticed no difference so I removed the jumper wire and now my tach is dead. My tach only works if my coils are jumped now... And now if I'm idling for over 1-2 minutes my car will start beeping at me until I move like 3-4 feet. Lol
03-15-13, 06:24 PM
#3
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I'd check your coolant on that Beeping issue.
As far as the Coil/tach issue have you tried new plugs and wires to see if that would make any difference?.
I had fouled trailings that would cause my tach to go Bonkers.
As far as the Coil/tach issue have you tried new plugs and wires to see if that would make any difference?.
I had fouled trailings that would cause my tach to go Bonkers.
03-17-13, 03:36 PM
#4
Serotonin Satellite
Thread Starter
My car runs perfectly fine. The plugs are newer NGK's and the wires are brand new NGK. My ignition system should be fine. Except after satch recommended I try jumping my coils and now it only works if they are jumped
03-17-13, 04:33 PM
#7
Serotonin Satellite
Thread Starter
I think I'm being misunderstood. My car works perfectly fine with or without the coils being jumped. I've removed the coils and thoroughly cleaned all contact points and checked all connections.
My tach was working perfectly fine until I jumped my coils. Now my tach only works while they are jumped. Car runs either way. No hesitations or hiccups.
My tach was working perfectly fine until I jumped my coils. Now my tach only works while they are jumped. Car runs either way. No hesitations or hiccups.
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03-17-13, 04:57 PM
#8
I think I'm being misunderstood. My car works perfectly fine with or without the coils being jumped. I've removed the coils and thoroughly cleaned all contact points and checked all connections.
My tach was working perfectly fine until I jumped my coils. Now my tach only works while they are jumped. Car runs either way. No hesitations or hiccups.
My tach was working perfectly fine until I jumped my coils. Now my tach only works while they are jumped. Car runs either way. No hesitations or hiccups.
https://www.rx7club.com/2nd-generati...-help-1027959/
And as long as the tach works accurately, what does it matter if there is a jumper in place?
Last edited by satch; 03-17-13 at 04:59 PM.
03-17-13, 05:40 PM
#9
the trailings are likely not firing, which is why when it is jumped it works ok.
BECAUSE the leading coil is feeding the tach signal through the trailing coil which is non functional.
the car will still run fine without the trailing coil, so it running fine means nothing to me.
test your trailing wires with a timing light and i suspect there is nothing coming out of them.
BECAUSE the leading coil is feeding the tach signal through the trailing coil which is non functional.
the car will still run fine without the trailing coil, so it running fine means nothing to me.
test your trailing wires with a timing light and i suspect there is nothing coming out of them.
Last edited by RotaryEvolution; 03-17-13 at 05:43 PM.
03-18-13, 02:22 AM
#10
Serotonin Satellite
Thread Starter
Post #1 says differently.
https://www.rx7club.com/2nd-generati...-help-1027959/
And as long as the tach works accurately, what does it matter if there is a jumper in place?
03-18-13, 02:27 AM
#11
Serotonin Satellite
Thread Starter
the trailings are likely not firing, which is why when it is jumped it works ok.
BECAUSE the leading coil is feeding the tach signal through the trailing coil which is non functional.
the car will still run fine without the trailing coil, so it running fine means nothing to me.
test your trailing wires with a timing light and i suspect there is nothing coming out of them.
BECAUSE the leading coil is feeding the tach signal through the trailing coil which is non functional.
the car will still run fine without the trailing coil, so it running fine means nothing to me.
test your trailing wires with a timing light and i suspect there is nothing coming out of them.
BTW, wouldn't there be a performance loss if you weren't running with a trailing coil?
03-18-13, 03:25 PM
#13
Serotonin Satellite
Thread Starter
I need to buy a new timing light.
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