Well i finally got arrount to trying to fix my weird tach problem,, It use to go up and down at 4500RPM..... just basically go all over the place as soon as I would go over 4500RPM>..
so I was told to Wire it straight to my MSD ignition box where there is a signal output on the side,,, I wired it directly into the back of my cluster so its a direct line.... it seemed to work perfect in neutral

then I went for a rip and as soon as I hit fullboost and about 7000RPM it does the same thing and goes all messed up... my redline is 8750RPM so its very frustrating cuz i dont know when to shift...

NOW should I rewire the tach directly to the distributor?? would that work???

SECOND PROBLEM.... MY AUTOMETER PYRO GAUGE
I had the power souce hooked up the power on the back of my radio...and If I played it loud ( i have a sub) the pyro gauage would flick all over the place... as soon as I would turn down the radio it would go away...
-So i figured the logical explanation was that the radio was draining volts when the bass would hit...

SO i wired it directly to the fuse box in the engine bay,,, and I still have the same problem...... any suggestions??

PLEASE HELP!

Tyler

 

Bad ground! Probably not a power issue.

 

ground from where??? motor to the body?

 

I might check those. Battery to chassis, chassis to tranny.

More likely I'd guess it's nearer to your gauges. Where is your gauge grounded?

If the voltage between the sensor ground (engine) and the gauge ground (chassis?) is changing, you will get weird voltage fluctuations. So maybe your gauge is grounded the same place as the radio/stereo?

Do your lights dim when using the stereo?

 

no it seems my lights are fine but you are right the pyro is grounded to the radio....

 

Ground it to the chassis!

 

no where ealse???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ATgrills.com &raquo;</TD></TR><TR><TD CLASS="quote">no where ealse???</TD></TR></TABLE>

OR the friggin' battery. But the chassis should be easiest. Find a bolt and ground to it. Or put a self-tapping screw under there somewhere. Be creative.

 

let you know if it works tomo!