Whenever i hit VTEC my speedo acts up on me, and my RPM readings arent accurate at WOT VTEC!

this just happend today morning, when i downshifted and went WOT!

when driving normally, everything seems fine!

please help, its bugging the hell out of me....:cry:

 

Could be Speed sensor...

or Cap/distributor..

90EFHB had that problem in his EF...

But your speedo info is sent throughthe harness by the ECU...

Hmmmmm...

 

ya, definitely sounds like cross talk..
something is leaking impulses..
bad wires..cap/rotor..something along those lines..
or moisture......

 

speed sensor on tranny was replaced not too long ago.....

i installed an intake, if that makes a difference???

 

did you reset the ecu by pulling the fuse?? (re: intake)
speed sensor..that's electronic right?? did they pull the actual speedo housing?? (where the plastic wheel goes up against the output gear (on the diff..))
maybe the gear is scrap..worn out and begins to miss at high rev..
try adding some di-electric grease to the plug where the wires connect to the housing..

we'll keep at it

 

i'll have the mechanic have a look at it, im getting pissed everytime i drive the dam thing! lol :cry:

thanks alot, i'll let u know what it was!

 

cool..it'll be interesting to find out.

 

sarcasm???

 

i meant it'll be good to know what it ended up being...
then if it ever happens to anyone else we'll know better what to look for..

 

haven't had time to get to my mech

but i am guessing maybe a bad connection

New Discovery: if car is in neutral, and giving high revs above 5500 rpm, the speedometer starts jumping around, as if it's gay...lol
dam its pissing me off!

 

My tach was boucing yesterday, and it turned out to be a bad ground of the distributor.