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11-29-2007, 09:02 PM
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#1 |
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Registered User
Join Date: Nov 2007
Location: Franklin Indiana
Posts: 635
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maximum frustration (coolant gage)HELP!
I started off with a gage that read to low. It read between 100 and the first mark. I checked the wiring the gage and figured that the sending unit must be going bad. So I replaced it and now the gage reads to high. Does anyone know what the OHM range the gage is supposed to read?
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11-29-2007, 10:09 PM
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#2 |
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Registered User
Join Date: Apr 2007
Location: Freedom CA
Posts: 488
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Re: maximum frustration (coolant gage)HELP!
You may have a light sender or emission switch instead of a gauge sender....
__________________
68 Chevrolet k20 Longbed 350 SM465/205, Dana 44, 14bolt, Power steering, Power Disk Brakes, 35" BFGs. 84 Chevrolet Suburban K20 6.2 Banks turbo TH400/NP208 Now with G80 68 GMC C20 Parts? Truck And a few cars 
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11-29-2007, 10:13 PM
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#3 |
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Registered User
Join Date: Nov 2007
Location: Franklin Indiana
Posts: 635
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Re: maximum frustration (coolant gage)HELP!
Thanks for the response it was the one Auto Zones books recommended so I don't know.
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11-29-2007, 10:54 PM
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#4 |
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Registered User
Join Date: Nov 2007
Location: San Antonio, TX
Posts: 28
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Re: maximum frustration (coolant gage)HELP!
I found a couple of references online that show a 240-33 ohm range on the sensor for a 0-280 degree temp gauge. I'm not sure if stock GM gauges use the same type of sensor.
Bruce |
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11-29-2007, 10:54 PM
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#5 |
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Registered User
Join Date: Apr 2007
Location: Freedom CA
Posts: 488
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Re: maximum frustration (coolant gage)HELP!
see if this copies...
ECT Temperature vs. Resistance Values �C ...�F Ohms 100 ..212 ...177 90 ..194 ...241 80 ...176 ...332 70 ...158 ...467 60 ...140 ...667 50 ...122 ...973 45 ...113 ...1188 40 ...104 ...1459 35 ...95 ....1802 30 ...86 ....2238 25 ...77 ....2796 20 ...68 ....3520 15 ...59 ....4450 10 ...50 ....5670 5 ....41 ....7280 0 ....32 ....9420 -5 ...23 ....12300 -10 ..14 ....16180 -15 ..5 ...21450 -20 ..-4 ....28680 -30 ..-22 ...52700 -40 ..-40 ...100700
__________________
68 Chevrolet k20 Longbed 350 SM465/205, Dana 44, 14bolt, Power steering, Power Disk Brakes, 35" BFGs. 84 Chevrolet Suburban K20 6.2 Banks turbo TH400/NP208 Now with G80 68 GMC C20 Parts? Truck And a few cars
Last edited by 68K20 x Drill; 11-29-2007 at 10:56 PM. Reason: meh... close enough |
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11-30-2007, 08:44 AM
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#6 |
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Registered User
Join Date: Nov 2007
Location: Franklin Indiana
Posts: 635
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Re: maximum frustration (coolant gage)HELP!
Well here is the latest: I used my V.O.M. Meter and check the unit that read low the reading was approx. 3.710K Ohms I checked the unit that ran high and it read 2.935K Ohms. So I went to the dealer and bought one and it reads 3.410K Ohms. I haven't had a chance to install it but I'm sure it will be OK. I guess the commercial was right use only GM parts. I spent 9.00 and change for the AutoZone part and 36.00 and change for the GM, but it will work. So the 9.00 part saved me no money and cost me a lot of time.
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12-04-2007, 09:42 AM
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#7 |
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Registered User
Join Date: Jun 2007
Location: TEXAS
Posts: 378
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Re: maximum frustration (coolant gage)HELP!
I agree with your final assessment. I bought from Auto Zone and the gauge at least works now, but is a bit low on Temp, I suspect. GM Parts are the way to go. I always ask for any discounts just about every place I go. I asked the local Chevy dealer here if they supported the company I worked for and they said , YES, we have a discount for you. Never hurts to ask. Paid the taxes.
That guage is not easy to service and makes a bit of a mess when you uncork it. I changed mine out since I had the inner fenders out for paint. I hate to do things TWICE. LBJ |
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