Distributor Coil?

PAguy
Club4AG Regular
Posts: 19
Joined: Thu Jul 02, 2015 12:25 pm
Location: Western PA

Distributor Coil?

Postby PAguy » Thu Sep 22, 2016 7:17 pm

    My '85b MR2 has a tachometer freak out every day or so (either works perfectly or just pegs randomly with no change in RPM's).
    Is this the sign of a dying distributor pick up coil? It is still running fine. But I don't want to die in a bad place.
Western PA
Long string of old Toyota's over the decades.
Currently daily an '84 SR5 hatch, an '85 GT-S coupe and a 91 FJ80.
Daughter #3 has an '86 MR2.

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jondee86
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Joined: Fri Jan 11, 2013 10:21 pm
Location: Wellington, New Zealand

Re: Distributor Coil?

Postby jondee86 » Fri Sep 23, 2016 12:01 am

AFAIK the MR2 tacho will be triggered by a voltage spike derived from
the coil negative. So no connection to the distributor pickups. Most likely
you have a bad/loose connection somewhere on the tacho feed wire.

Cheers... jondee86
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