tachometer not working

**LS1_ws6** · 12-27-2009, 10:33 AM

I just installed pacesetter headers and work great but today the tachometer needle stays down only when I rev it up to 2500 rpm it moves. I did a diognostic test and gave me a p0306 code. I dont have a tune. What did I do wrong.

**Kaotic_ws6** · 12-27-2009, 10:41 AM

Originally Posted by LS1_ws6

I just installed pacesetter headers and work great but today the tachometer needle stays down only when I rev it up to 2500 rpm it moves. I did a diognostic test and gave me a p0306 code. I dont have a tune. What did I do wrong.

maybe a wire or somethin melted? idk why putting headers on your car would affect the tach.

**35th-ANV-SS** · 12-27-2009, 10:47 AM

P0306 is cylinder 6 misfiring. Check your spark plug wire to make sure you put it on all the way.

As far as the tach, you say it stays down yet you mention it moves at 2500? I am a little confused. How does it get to 2500? Or is it at 2500 at idle?

**LS1_ws6** · 12-27-2009, 10:58 AM

Originally Posted by 35th-ANV-SS

P0306 is cylinder 6 misfiring. Check your spark plug wire to make sure you put it on all the way.

As far as the tach, you say it stays down yet you mention it moves at 2500? I am a little confused. How does it get to 2500? Or is it at 2500 at idle?

at idle its all the way down like its off but i rev it up the needle goes up to 2500rpm

**35th-ANV-SS** · 12-27-2009, 11:05 AM

First thing that comes to mind is maybe a ground. Not real sure.

I would check all wiring first like above mentioned.

**LS1_ws6** · 12-27-2009, 11:13 AM

Ok thanks.

**SteveC** · 12-28-2009, 04:11 AM

I had my tach stop working, and threw code P0343, it turned out to be a defective cam sensor, which ofcourse had to be located under the intake manifold.

SteveC

**SOMbitch** · 12-28-2009, 12:40 PM

Originally Posted by SteveC

I had my tach stop working, and threw code P0343, it turned out to be a defective cam sensor, which ofcourse had to be located under the intake manifold.

SteveC

Yep and there are three 034x codes that deal with bad CPS IIRC. A low voltage code, high voltage code and a poor performance code (or something like that)

**SteveC** · 12-29-2009, 04:34 AM

Originally Posted by SOMbitch

Yep and there are three 034x codes that deal with bad CPS IIRC. A low voltage code, high voltage code and a poor performance code (or something like that)

Mine was of the "high voltage" flavor. When it threw the SES light, I was running in "limp mode" which used alot more gasoline, and a considerable amount of carbon in the tailpipe. I had it fixed at a professional shop I have been dealing with for over 20 years, and opposed to me trying to fix it, the job was done correctly.

SteveC

**SOMbitch** · 12-29-2009, 04:43 AM

Originally Posted by SteveC

Mine was of the "high voltage" flavor. When it threw the SES light, I was running in "limp mode" which used alot more gasoline, and a considerable amount of carbon in the tailpipe. I had it fixed at a professional shop I have been dealing with for over 20 years, and opposed to me trying to fix it, the job was done correctly.

SteveC

Glad you got it fixed . At least it didn't leave you walking

**SteveC** · 12-31-2009, 04:15 AM

Originally Posted by SOMbitch

Glad you got it fixed . At least it didn't leave you walking

The real sad part of this all, is that this vehicle is a "garage queen" (01 Z28), I am the original owner, it has 26K miles on it, gets driven once a week. I believe this is an unusual repair for such a low milage, little used vehicle.

SteveC