Can the temperature sender that gives the ECM temperature feedback, be used for the temperature gauge also? Currently, I have two senders, one for the ECM and one for the gauge. I was cleaning things up and wondered if I could eliminate one of the senders.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
It's not recommended to split the signal from one sender to two devices, at least not without the use of a buffer, but that gets more involved than just using a second sender.
The man who says something is impossible, is usually interrupted by the man doing it.
There are CTS sensors that have 3 pins instead of 2, the extra is for a gauge. But I've never tried to use one...
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
those 3-wire senders are quite useful, actually... some of the later cars went to a single two-wire sensor and drove the coolant temp guage using either a PCM output or over the datastream. the port for the 2nd sensor sometimes wasn't present either, so either drill/tap or use the 3-wire sensor were the only "simple" options.
1995 Chevrolet Monte Carlo LS 3100 + 4T60E
Get the 3 wire sender from a 98 Bonneville 3800 Supercharged. Top two pins (Black and Yellow) are the CTS. Bottom somewhat centered pin (Green) is the temp gauge. Hit me up if you need a pigtail and can't get one.
WIR425_ezr2.jpg
FYI - The response curves for the stock CTS and the stock GM temperature gauge senders are different. They look similar but they are clearly different.
Will it work with any aftermarket gauges? Or just GM type?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
There are many 3100 and 3400 that use the 3 wire sensor as well.Originally Posted by phonedawgz
What? Everything I've seen says otherwise. The documentation I have seen have shown the resistance curves to be the same between coolant senders and sensors.FYI - The response curves for the stock CTS and the stock GM temperature gauge senders are different. They look similar but they are clearly different.
The man who says something is impossible, is usually interrupted by the man doing it.
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