Third Gen. Tach Problems

[tacoma man..]

Hey guys, its me tacoma man, you guys should remember me from a few years ago. my old profile stopped working so i had to make a new one.

Anyway, my tach in my 90 rs is going haywire. at idle it says around 4500 and cruising down the road it tachs plum out to the needle. my car has
the factory 5.0 ltr tbi injection engine. can i repair this myself?

Is genopsyde still around? maybe he can help me.

Thanks

James

[goldz28]

Originally Posted by tacoma man..

Hey guys, its me tacoma man, you guys should remember me from a few years ago. my old profile stopped working so i had to make a new one.

Anyway, my tach in my 90 rs is going haywire. at idle it says around 4500 and cruising down the road it tachs plum out to the needle. my car has
the factory 5.0 ltr tbi injection engine. can i repair this myself?

Is genopsyde still around? maybe he can help me.

Thanks

James

Hey long time no see man. Geno is still around. I am going to move this to problem diag and will pm the admin and see if we cant get your old account to work again.

[Morley]

If you're good at diagnosing electronics you could fix it..but for the average Joe? Nope. All 3rd gen tachs go through what your's is, its just part of them getting old.

[Genopsyde]

so probably a cluster replacement would fix it?

[wrightz28]

Before doin that, make sure the TACH reference wire off the coil isn't nicked or pinched somewhere.

[Morley]

Originally Posted by Genopsyde

so probably a cluster replacement would fix it?

Not the whole cluster, you can replace just the tach.

[Genopsyde]

I'm not too sure about that, the 90-92 clusters are a single unit where none of the individual gauges are removable. I could be wrong tho, it's been known to happen.

[Morley]

Originally Posted by Genopsyde

I'm not too sure about that, the 90-92 clusters are a single unit where none of the individual gauges are removable. I could be wrong tho, it's been known to happen.

I've already replaced the tach on my 91 Formula. Just remove the cluster, then remove the gauge you need to replace, easy.

[Genopsyde]

the clusters in the pontiacs are different than the ones in the chevy's. here's a pic of the 90-92 camaro cluster...

[Morley]

Originally Posted by Genopsyde

the clusters in the pontiacs are different than the ones in the chevy's. here's a pic of the 90-92 camaro cluster...

They only "look" different, their construction is the same.