why would you put a tach on a car that has one already?
Aftermarket Tach Install
On the 1MZ powered camrys, the stock tach receives its signal from the ECU. The tach I am purchasing will need to be calibrated based on the number of pulses per revolution(PPR). Does anyone know what the PPR is? I've got a 1997 camry ecu. Since its a wasted spark design, I'd guess it would be 2 but I could be wrong.
1 - 11 of 11 Posts
Joined
·
2,395 Posts
I put my Apexi tach wire into the Diagnostics plug in the engine bay. That might work better than fishing around the ecu.
Joined
·
26 Posts
because I am redoing the entire gauge cluster since my speedometer does not work with the transmission I installed.2wickedtoyz said:
CamryPunk, I know where the wire is, I was just hoping somebody would know what the PPR is. Did your tach require calibration?
Joined
·
2,395 Posts
Nope. Cuz the Apexi one has a mini "computer in it so all I had to do was set the tach to "4 cylinder" and it was good to go.SBCelicaGT said:
Joined
·
26 Posts
Interesting. Though, I wonder how it knows how to base the signals if the engine has a wasted spark setup.
i think the thingy youre lookin for is the speed sense. i usually have the speed sense info but not for camry.
check www.the12volt.com under forum/cruise control, they might be able to hel pyou
check www.the12volt.com under forum/cruise control, they might be able to hel pyou
Joined
·
26 Posts
No, i am installing a tachometer. I don't need the speed sensor signal. I need the pulses per revolution outputed from the ECU to the stock tach so that I can calibrate my aftermarket tach properly. I guess nobody has done an install on a v6 camry I suppose.
Joined
·
262 Posts
Try it at idle and see what setting is right. You know what your idle should be at, because you've looked at your stock tach enough. Sorry I can't be more help.
Joined
·
2,297 Posts
You wouldn't happen to be installing a 1MZ into a 1990 Gen 2 would you?
Joined
·
26 Posts
Awesome thread revival! For the record... I still have that tach sitting in a box and just this week I decided to finally get around to finishing up my cluster. I think you are right in that I'll probably have to go by trial and error to get it to read correctly.DoubleEdgedWomb said:
I'm finalizing my gauge plate design and hope to have it cut some time this month. This is what I'm working on:
1 - 11 of 11 Posts
