1996 LT4 Temp sensor
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Instructor
Joined: Aug 2017
Posts: 246
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1996 LT4 Temp sensor
My digital readout says all is well. Car does not seem hot.
Analog gage says temp is close to 260.
I am planning to replace the analog temp sensor. Where is this one located? How do I identify it to the parts guy? How much of a bitch will this job be?
Analog gage says temp is close to 260.
I am planning to replace the analog temp sensor. Where is this one located? How do I identify it to the parts guy? How much of a bitch will this job be?
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
If your LT4 temp sensor is the same as the LT1: the analog coolant temp gauge uses the info from the sending unit located between the #6 and #8 spark plugs on the passenger side cylinder head. It is a single wire sending unit and uses the head as the ground.
I wouldn't be concerned about the analog gage. If replacing, the gage is readily accessible, and reasonably priced.
I wouldn't be concerned about the analog gage. If replacing, the gage is readily accessible, and reasonably priced.
Last edited by don hall; Feb 23, 2019 at 05:11 PM.
Thread Starter
Instructor
Joined: Aug 2017
Posts: 246
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Changed it. Running 224 digital. 260 analog. 45 degree ambient air temp .
Digital temp reached 230. Both fans came on . Digital temp is now 220.
Analog gage fluxuating between last two marks on gage.
Car idling with hood open.
Note. Thermostat changed last year. 5000 miles ago.
Digital temp reached 230. Both fans came on . Digital temp is now 220.
Analog gage fluxuating between last two marks on gage.
Car idling with hood open.
Note. Thermostat changed last year. 5000 miles ago.
Last edited by MikieG1971; Feb 23, 2019 at 09:09 PM.
Le Mans Master
Joined: Feb 2000
Posts: 9,058
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From: Epping NH
I'm going off memory, but I seem to recall the display and analog gauge is driven by the same output form the ECM. Also the analog gauges in these cars are stupidly inaccurate too the point of being completely embarrassing for a car that is GM's flag sports car! GM gave in to car magazines at the time whining about the digital dashboard in earlier models so they came up with these stupid analog gauges that make no-sense most of the time! I never use them, I just cycle through the digital display.
If I remember I'll try to check the wiring schematic in FSM when I'm home. To me it sounds like the digital display is accurate, fans are designed to come on between 225-230.
If I remember I'll try to check the wiring schematic in FSM when I'm home. To me it sounds like the digital display is accurate, fans are designed to come on between 225-230.
