why no tach response @ times?
#1
Senior Member
Thread Starter
why no tach response @ times?
car: '87 TII
recently I'm experiencing this symptom more frequently.
i'll start the engine but no tach.
however the tach will come back to life, e.g., if while coasting in gear i turn the ignition off then back on.
is there an explanation?
recently I'm experiencing this symptom more frequently.
i'll start the engine but no tach.
however the tach will come back to life, e.g., if while coasting in gear i turn the ignition off then back on.
is there an explanation?
Last edited by Clubuser; 01-08-13 at 11:40 AM.
#3
Senior Member
Thread Starter
#6
Senior Member
Thread Starter
thx 4 the suggestions.
If no tach means the trailing side is not getting getting spark, should the engine idle be weaker. e.g., lower vacuum? I'll have to hook up the timing light on the traing side to see if there is spark when the tach is dead.
If no tach means the trailing side is not getting getting spark, should the engine idle be weaker. e.g., lower vacuum? I'll have to hook up the timing light on the traing side to see if there is spark when the tach is dead.
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#8
Senior Member
Thread Starter
Check grounds?
The one for the instruments is under the trailing coil I believe.
Proper RX-7 Grounding Procedures
The one for the instruments is under the trailing coil I believe.
Proper RX-7 Grounding Procedures
#9
Lives on the Forum
iTrader: (8)
Most likely either the tach itself or the trailing coil. As cheap as both are, I'd pick up known working used ones and try them out before I started spending my time in the wiring aspect.
You can get an NA cluster and use the tach out of it...you can even just plug it up to your turbo car and see if it behaves better before swapping the individual tach itself into your turbo cluster.
You can get an NA cluster and use the tach out of it...you can even just plug it up to your turbo car and see if it behaves better before swapping the individual tach itself into your turbo cluster.
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