[bhill86]

Just curious what’s direction is it off to? Reading hotter than actual temp or less than actual temp?

I haven’t got a clue where the sender came from in my car, it was there when I bought it, but it isn’t original. Parts store senders are notorious for being inaccurate. I read on this forum about lectric limited and ordered one from them. Comparing the temp gauge with new sender to a mechanical gauge and water crossover temp with an infrared thermometer, they’re all real close now.

My other sender read around 50° high. You can test the senders if you wanted too. They should a specific ohm reading at different temps.

It also seems to me 79 or 80 required different senders with different ohm ranges. Just FYI to the second two posters who didn’t mention what year their car was.

[4dblnkldude]

My gauge is reading about 60 deg hotter. It is a 77 400 transplanted in a 81 TA.

[bhill86]

Originally Posted by 4dblnkldude

My gauge is reading about 60 deg hotter. It is a 77 400 transplanted in a 81 TA.

Ok. That’s similar to how mine was. 50-60 degrees hotter than my mechanical gauge.

Looking at lectric limited’s site, 77s with Pontiac motors are a different part number than 79s and 80s with Pontiac motors which are the same part number. Obviously the 400 wasn’t available in 80 but it’s the same part number for the 400 or 301 which I believe is because the gauge in 79-81 cars is set up differently and requires different resistance than earlier gauges at the same temp.

[GTO TEX]

Originally Posted by bhill86

Just curious what’s direction is it off to? Reading hotter than actual temp or less than actual temp?

I haven’t got a clue where the sender came from in my car, it was there when I bought it, but it isn’t original. Parts store senders are notorious for being inaccurate. I read on this forum about lectric limited and ordered one from them. Comparing the temp gauge with new sender to a mechanical gauge and water crossover temp with an infrared thermometer, they’re all real close now.

My other sender read around 50° high. You can test the senders if you wanted too. They should a specific ohm reading at different temps.

It also seems to me 79 or 80 required different senders with different ohm ranges. Just FYI to the second two posters who didn’t mention what year their car was.

The TA has FAST EFI installed. The handheld programmer will show 180 with the cluster temp showing 100. I have verified the programmer temp reading with an IR gun. I just ordered the #01513321 sender from Lectric Limited and will give it a shot.