hey, gotta ?. i just installed a tach today. i have a 3 spd auto in my 84 tempo. i notice something. none of the gears will run out past 2200 rpms, whats up with that?the car shifts at that all the time, unless i manually shift it.
Hummmm..... that's odd. I don't know about the 84's but my 94 3 speed will run right up to 5500rpm and hold there for about a second before shifting. If I manual shift it, it goes just a little higher, maybe 5700rpm.
My guess would be.... and I don't mean to bash you or anything, but if you just installed a tach and noticed that that car only run to 2200rpm then you probably installed the tach wrong. - 2200rpm seems way to low to be shifting.
Dude, check the tach for it to be set for a 4 cyl. Most aftermarket tachs have a button (in the bottom back) you can select, 4, 6 or 8 cylinders. If you have it set for a 6 or 8 cylinder, the signal frequency will be lower, thus reading a lower RPM than you're actually running. Hell, if it's set on 8 cylinders, you're actually shifting at 4800+RPM. If it doesn't have a button, then most likely your tach is meant for 8 cylinder cars. Check the button and let us know what happens so we can help you more if you need it.
What RPM does the tach show when your engine is idling? I think Guillermo is right that the tach is set for an 8 cylinder car. Check the operating manual from the tach and it should say how to set it for a 4 cylinder. Perhaps you have to pop the cover off or something. If it's an expensive tach, it definitely should be adjustable for 4,6 8 cylinder engines.
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