temp gauge - Team Camaro Tech
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post #1 of 4 (permalink) Old Aug 27th, 01, 06:45 PM Thread Starter
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Join Date: Aug 2001
Location: Ronkonkoma , NY , USA
Posts: 37

I hope someone else has run into this problem and solved it . I have a 69 Camaro SS Conv. 350 eng. recently restord . During resoration it was nessary to replace the temp gauge in the console . The guage Has never worked .(GM guage from restoration supplier) I am on my 2nd guage and about my 15th sending unit , the wiring has been changed, the head is clean , the grounds are OK , the guage pins on Hot when the wire is grounded . I can make the guage work with variable resistance test equipment . the problem seems to be a compatability problem between the guage and the sender . The sending units (old/new/GM/aftermarket ) seem to be working in the 520-560 ohm range (cold) and work thier way down to the 120-170 ohm range (operating temp) , the guages however seem to be working in the 130-140 ohm range (cold) to the 30-40 ohm range (operating temp) ,so you can see that the senders never get low enough to operate the guage .I can't lower resistance without enlarging the wire so I need a sending unit that works in the lower range or a guage that works in the higher range . do these items exist and if so were can I get them ? STUMPED! in NY
69ragtop is offline  
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post #2 of 4 (permalink) Old Aug 28th, 01, 06:48 AM
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Join Date: Jan 2001
Posts: 446

I dont know if I can solve your problem,But I can tel you what worked for me. I put console guages in my 69. Bought used from Camaro specialty in New York. The sold me the correct sending unit with the guages, and its worked great. and further I did an engine swap and the new vortec heads have a smaller 3/8 pipe hole in the head and the correct sender for the guages is 1/2 pipe. Went to the dealer and got a sender they said would work and fit in a late model head. No temp indication. Wasted 30 bucks. I now have the correct sender in the water pump, i'm not running a heater. But i've never had a problem using the parts I got from Camaro specality. Used on 2 different motors, both the same. good luck.

Black 69 camaro
HOTROD69CAMARO is offline  
post #3 of 4 (permalink) Old Aug 28th, 01, 03:03 PM
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Join Date: Jan 2000
Location: Grand Ledge, MI 48837 USA
Posts: 366

Be carefull not to use too much teflon tape when installing the sending unit. Too much tape will affect how it works greatly.
kurt6325 is offline  
post #4 of 4 (permalink) Old Aug 28th, 01, 06:12 PM
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Join Date: Jun 2000
Location: LaGrange,Il
Posts: 1,026

The only thought I have is the resistor on the gage. Is it missing, blown, wrong?
I don't knoe if it is the problem.. Just a thought
Mat Klemp is offline  
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