n1netyn1ne

Would anyone know why the in dash factory tach would read high. Its about 1000 rpms higher then my aftermarket tach which reads correctly...

PRO50SC

What have you used to confirm which one is actually correct?

2 kwik

I have seen new after market tachs off as well

n1netyn1ne

damn....how can i test this??

2 kwik

try the new tach out on a friends car would be the easiest
also are you sure it switched for a v-8?

PRO50SC

Yup, that's why I asked what I asked.

2 kwik

sunpro is famous for this..as I used to be a dealer for them..autometer as well who owns sunpro

n1netyn1ne

yeah my aftermarket one is switched for v8 ..but since my car use to be a 2.3 are the dash tach's wired different? if so ..would the fix be finding a dash from a v8?

cbennett

my autometer does the same thing.. really annoying.. i got it all installed and everything, complete with shift light.. i got it off ebay.. and it reads about a grand or 2 too high..
is the tach just junk?

ruger311

seems like the stockers are always off by 200-1000rpms, you can check it with a dyno ifyou ever go there, most of the aftermarket tachs require you to set a jumper to either 4, 6, or 8 cyl most of them are already setup for 8cyl just read your instructions,