C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1985 L98 tach filter location?

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Old Jun 4, 2023 | 11:04 AM
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Shootinok
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From: OOOOKLAHOMA where the wind comes sweepin down the plain
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Originally Posted by DanielRicany
Best way to remove it is to remove the windshield wiper motor. It's bolted to the back side of the drivers side cylinder head. It is connected to the distributor via a wire, and has another wire connected to it that goes to the ECM/Digital Dash or wherever.
Realizing this is a zombie thread (this answer from 8 years ago) it is what I found when I searched. I’m hopping to add info for the next searching victim.
I needed to fix both the wiper stutter issue and the tach jumping all over, so I elected to do them both at the same time.
with the wiper motor out the tach filter is easy to see.
The challenge is, it’s attached to a stud. In my case the stud wanted to turn and not the nut holding the filter and a couple ground wires.
I ground a cheapo wrench super thin to hold the stud, and that did the trick.

Not too bad really.





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