G
Guest
·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.
1 - 7 of 7 Posts
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.
Al
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.
Al
G
Guest
·yeah, my car screams at just around 2500. its screamin like its about to explode. but i dont know why it would be like that, i mean, what would make it do that?
Joined
·
118 Posts
Likely cause
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.
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.
G
Guest
·nope, no button, dont say i have to get another tach, that was expensive and i drilled holes. ****
Joined
·
118 Posts
Question
That's a big reason why I would never drill my car and why I suggested using a velcro adhesive......What is your idle speed?
That's a big reason why I would never drill my car and why I suggested using a velcro adhesive......What is your idle speed?
G
Guest
·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.
1 - 7 of 7 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Ford Forums
Ford Forum is a community to discuss all things Ford. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more!
Full Forum Listing
Join now to ask and comment!
