Microtech oem tacho incorrect
Thread Starter
'only sideways will do'
Joined: Mar 2003
Posts: 9
Likes: 0
From: aberdeen, uk
oem tacho incorrect
i have tried using the standard connection from the secondary coils and the tacho only works above 5000 rpm, below this the tacho hovers around 0.
i have now hooked up the tacho to the primary coil via the microtech and it works properly but near 1000 rpm out, can anyone help? is this common?
i have now hooked up the tacho to the primary coil via the microtech and it works properly but near 1000 rpm out, can anyone help? is this common?
Thread Starter
'only sideways will do'
Joined: Mar 2003
Posts: 9
Likes: 0
From: aberdeen, uk
yeah sorry its a 1991 rx7 t2 with a lt8 microtech.
the laptop shows that the microtech rpm is ok but my car tacho is wrong. ive tried a new tacho,
i have now got the tacho feed inlined with microtech wire that goes to the primary coil
the laptop shows that the microtech rpm is ok but my car tacho is wrong. ive tried a new tacho,
i have now got the tacho feed inlined with microtech wire that goes to the primary coil
THE TACH WIRE DOES NOT COME FROM THE COIL PACK
on a TII you must get it from the trailing ignitor.
the YELLOW WIRE coming from the ignitor is your tacho feed.
get back to us tell me how you go
on a TII you must get it from the trailing ignitor.
the YELLOW WIRE coming from the ignitor is your tacho feed.
get back to us tell me how you go
Thread Starter
'only sideways will do'
Joined: Mar 2003
Posts: 9
Likes: 0
From: aberdeen, uk
yes at first i hooked the tacho to the yellow wire from the trailing coil pack but the tacho will not move till about 5000 rpm, then it becomes accurate,
on hooked up to the primary's the tacho is sort of accurate but around 1000rpm out
on hooked up to the primary's the tacho is sort of accurate but around 1000rpm out
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Jeff20B
1st Generation Specific (1979-1985)
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Sep 16, 2018 07:16 PM