I recently finished a D16Z6 swap on a friend's 91 CRX Si. With an O2 sensor replacement the engine is giving no codes, and seems to pull wonderfully. However, the tach (when at idle) now sits at 0 on the pin and as you accelerate it seems to be off as well.

What would cause the tach to read wrong without throwing a code, disabling vtec, or anything else? The tach was working fine with the D16A6 and it wasn't touched throughout the entire swap. Now, I have yet to test another cluster on it but only because I don't have one handy.

Anyone know what this could be? Is it most likely the cluster itself or is there something sensor/motor/ecu related?

Thanks.

Oh, and also I'm not 100% sure that vtec is engaging but I also can't read what RPMs I'm at... I pushed it up to 5k on the tach (my guess somewhere in the mid 6's for real) and I got no bogging or CEL although I couldn't detect an obvious change in power. It may be just working fine.

::confused:: Thanks again to any help.

 

up for my bro

 

check the vehicle speed sensor and what tranny are you using???

 

wait your tach is reading wrong so you cant read your RPMS? thats usually a dizzy problem i think

now if you speedo was reading wrong then it might be your VSS

 

my money is on dizzy it creates the signal

 

my tach bounced around when the bolts on my dizzy were loose

 

i had the same problem and it was the dizzy

 

hmm so maybe looking at the dizzy :/

i got the wiring from Rywire.com so i trust it. i'll doublecheck the connections/bolts/etc and see how it goes.

thanks again

 

ahh your tachometer for some reason i was thinking what i wanted it to be good catch


PS..


what holds the motor in place?? i cant think for **** get at me

 

Check the ignitor in your dizzy.