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Posted

I have a 1991 regal and did an l67 swap. I got all the wiring done for the swap to OBD2 as well but my guages are off. My speedo says way more than I'm going and my fuel guage reads full but at the same time my low fel light is on! lol

 

Question: What specs for an aftermarket guage? I need to know what the sending units put out as the range from empty to full. I am going to hope that grand prixs or any other gen 2 wbody uses the same specs as my 1st gen.

 

Also is any electric speedo ok? Would it tap into the wire coming out of the PCM that would run to my stock speedo or straight from the VSS?

 

Thanks,

Deia

Posted

Ok, I found a site that says the sending unit in all the 1st gen wbodies were 0-95 ohms.

 

I found this guage:

 

http://www.summitracing.com/parts/ATM-4314/

 

Can anyone confirm ohm ratings here? If what I found is accurate then it looks as this guage will work. This is great for people wanting to make a custom dash cluster and "modernize" the look of the dash.

 

  • 2 weeks later...
Posted

I'm having the same problem but its only the fuel that's off I have a half a tank and it says over full I'd like new looking gauges too

Posted

A lot of fuel gauge questions can be answered here.

http://www.autometer.com/tech_faq.aspx

http://www.autometer.com/tech_installation.aspx <- Has vehicle specific information

 

Also, here are the installation instructions for the speedo that you picked out:

http://www.autometer.com/productPDF/1138%20(indash%20tach).pdf

 

The installation instructions for all of AutoMeter's gauges are on their site. Take a look, the instructions are fairly well written and helpful and should answer lots of questions.

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