hello everyone,

i just bought a 2008 cobalt n i love the car.i have had it for about 15 days.this last sat. i took it to the track in dallas, texas. i had a problem looking at the tach when i was going down the track cause its too far down. so this weekend im going to be installing an r.p.m tach. i was reading on the "how to"section and they only have wirte up how to's on tach lites and there installs where on 2.0 superchargers so is it the same for process for my 2.2lt, can i run 2 tachs or do i have to cancel the original?any info will help.can anyone tell me a short write up on how to do this? thank you

 

Why are you going to run a second one? The current one is fine.

*sniffs* I smell... rice?

j/k

 

oooohhhh sweet and sour poooork! wha?!?!?!?!?!american rice?!?!?!?!

 

just install a shift light.
get this. ive always been interested in it.
http://www.ecliptech.com.au/main_win_sep06.html

 

You will be hard pressed to find an appropriate 'Tach Signal' wire on the Cobalt, for it communicates with its instruments via CAN network protocol, which is all digital.

There is a fix, however...it's called the Tach Adaptor from AutoMeter, and it will develop a discrete four-cylinder tachometer signal for you to use with tachs, shift lites, you name it. It wires in to the power supply wire for the four coils, and 'counts' the pulses, converting them into a tach signal. Very effective!

 

well i just wanted a tach instead of the light because that way i can look back n see what my shift points were when i go to the track and i have never been a fan of just the light.so if i get the shift lite how do i install it on to my 2.2lt?is it the same as the ss or is there a diffrence?

 

I think you'll ned the Tach Adaptor in any case, whether shift lite or tach, 2.0 or 2.2...but check with your vendor or manufacturer, they may be aware of some other method for these. If they are not, the Tach Adaptor will get it done.

 

I have a 2" Tach
Using the MSD Tach Driver because my tach does not go into 2 cylinder mode. It can be done but your rpm's will be off by about 100

 

ok so i got the tach adaptor from autometer.so on my o8 cobalt(2.2lt) what color wire do i look for on the coils so i can get my signal? do i cut that wire and then connect it to the tach adaptor?

 

I dont see how its hard to see..your going stright lol

 

Mount Plesant huh? ....ive been there a few times!! i honestly have to say that i dont use the tach much when i race...i can feel / hear it...and i have my interceptor with a shift light setting

...but, when you do get this working...post up some pics so we can see what it looks like, i cant say ive ever seen this kind of think in a cobalt before

 

you need to feel the car out and learn the shift points that way. i never look at my tach. also isnt 15 days after buying a liitle early for taking it to the track?

 

i kinda like to keep my eye on the track.lol (n not looking down.) i decided to get the tach light only but still not sure on how to connect the adaptor. i lost aginst a (nitrous spraying) toyota celica gt at the track cause i kept hitting my rev limiter.

i need to know what wire i connect the tach adaptor to. does anyone know?

 

just the word celica makes me want to jump out the 13th floor of my office building!

 

so basically your saying that your to new of a driver to be able to look down for a split second without running the car off the road...if so..then u should not be racing...or..put ur seat farther back hahahaha

 

lol....or you could just....u know....practice....and give it some time to become second nature to shift at high rpm's

 

the poor car was ony like 2 weeks old and already red lining it. I broke my car in a good while before even atempting to shift at hi rpm's. : ( so sad

 

i did 1000 mile break in period and have had no problems yet

 

get a raptor shift light it just clips on the coil pack

 

i put 1000 miles on it in 5 days, and all i need to know is how to install that tach adaptor. i just need to know what wire to look for so i can connect it the adaptor. THATS THE ONLY REPLY I NEED.this car is new to me i went from driving a nissan sentra ser spec-v to a chevy cobalt.so i dont know much about this car. n when i research on here all i here about are intake and exhoust questions.so can anyone out there just answer this simple little Question? thanks

 

i dont know what wire it is i use the factory tach i usually power shift as well to get rid of p.e. delay

 

try connecting the tach signal wire to one of the wires coming off the coil plugs

with your ignition setup it shouldn't be any different than an SS/SC

also, you really don't need a tach adapter if your tach has a 2 cyl mode but in any case your tach signal is going to come from one of those wires.

 

thanks man. you would not happen to know what color that wire may be do you?

 

unfortunately I don't...I would maybe start with the wire thats being given in the 2.0 how-tos and start from there. worst case scenario you just have a bunch of stripped wires but it shouldn't hurt anything to test them out.

 

ok thanks ill try that. will both tachs run ok?