Tach goes crazy since Hondata

[integraslut78]

So I just recently got a Hondata and when I floor my accellerator my tach starts jumping everywhere it starts right around 4500-5000 and then it bounces to 0 and then goes all the way around. I took it to a Tachometer specialist and he was baffled. Does anyone have any ideas what the deal is? All I know is that I do not want one of those 4" tachs with the shift light I want to keep my stock stuff.
Do you guys think it may be something with the ECU? I thought it was my spark plug wires but that was not it. Any ideas? Any help is much appreciated. Thanks in advance.

 

[integraslut78]

It almost seems that the rpms are going too fast for the tach which is obviously not true since my car is slower than hell. Thought this may give a better description of whats going on.

 

[integraslut78]

Any guesses?

 

[BigJ]

Bad Ground. I semi-have this problem. Or did, I fixed the ground, and everything's dandy.

 

[hcivic.com]

Call hodata up

 

[integraslut78]

Originally posted by Slammed89Integra@Jan 8 2005, 03:36 PM
Bad Ground. I semi-have this problem. Or did, I fixed the ground, and everything's dandy.

[post=443083]Quoted post[/post]​

Thanks bro I will check that out.

 

[integraslut78]

Originally posted by hcivic.com@Jan 8 2005, 03:42 PM
Call hodata up

[post=443087]Quoted post[/post]​

Hondata will just tell me to call one of their resellers.

 

[integraslut78]

Any other ideas if its not the ground?

 

[formby]

is it a good tach...(not a cheap knockoff?).....it might be the wiring .....

 

[integraslut78]

Originally posted by formby@Jan 8 2005, 05:09 PM
is it a good tach...(not a cheap knockoff?).....it might be the wiring .....

[post=443136]Quoted post[/post]​

It is my stock tach in my dash.

 

[posol]

tbone had the same problem. its breaking up- not enough to feel it, but enough to see it. check your ignitor.

 

[AllMotorMonster]

I know exactly what this could be...

Check 3 things.

1- Ground at the thermostat, make sure there is no corrosion. Also check all the other grounds on the engine/tranny. Look for corroded wiring or loose bolts/nuts

Check and see if this fixes the tach.... if not continue to #2

2- Take your gauge cluster out, tighten ALL the screws down on the back of the cluster. RE-install the wire harness, making SURE it is secure.

Check and see if this fixes the tach.... if not continue to #3

3- Find the TACH input to the ECU, make sure the connection is GOOD and not broken/corroded.

This should fix your problem.

 

[integraslut78]

Thanks guys if it ever stops raining here in SoCal I am on it. No garage.