How to fix tach being off from cluster swap???

[Robafb]

I have a 98 3.8 and put a z28 cluster in, I saw in the archives talk of being able to fix the tach problem, but wasnt able to really find an answer, can someone help?

[96firebird311]

I have been trying to squeeze out that answer for a while. I have seen a module made by dakota digital that says it cures that problem, but I also read that you only need to solder in a resister.... or capacitor... or something. (I can't remember) If this is true..... I wanna know details!!!

[Robafb]

I emailed dakota digital and they have a part that is $80 I would also like to do this cheaper

[black cali v6]

Apparently theres a transistor to either solder on or remove......sorry i cant help you much beyond that. People have told me thats how they've done it though.


zack

[Backfire]

I thought there was something more to it than that. Something with the V8 cluster expecting 8 pulses per revolution rather than the 6 it gets from the V6, or something along those lines. Is your tach off by about 25%?

[Marky82]

I'm instreaded in switched my 120 speedo for a 150....how hard was it to do....will the odometer reflect the new cluster and are any of your gages off or is it just the tack?

[nikon]

<blockquote>quote:</font><hr>Originally posted by Marky82:
I'm instreaded in switched my 120 speedo for a 150....how hard was it to do....will the odometer reflect the new cluster and are any of your gages off or is it just the tack?<hr></blockquote>

the odometer is in the cars PCM...wont effect that at all...

[96firebird311]

<blockquote>quote:</font><hr>Originally posted by nikon:


the odometer is in the cars PCM...wont effect that at all...<hr></blockquote>

Unless you don't have the digital odometer.... like myself.... :( but it can be changed legally at a shop.