Gm 3800 Coolant Temperature Sensor Replacement No Heatо The vehicle is a 2001 buick park ave. the situation is no heat to interior passengers compartment. the vehicle has a electronic automatic climate controller. 1) disconnect the ect. 2) connect resistances 1400, 93, and 55 ohms in turn and observe guage. 3) guage should read min, mid, and max temperature. this tested out just fine. 1400 ohms is for 40°c, and the min in the guage is 40°c. 93 ohms is for 120°c, and the exact mid positon is 120°c. likewise for the max.
Gm 3800 Coolant Temp Sensor Location Q A For 3800 Series 3 Engin The pcm supplies a 5 volt signal to the engine coolant temperature sensor through a resistor in the pcm and measures the voltage. the voltage will be high when the engine is cold, and low when the engine is hot. by measuring the voltage, the pcm calculates the engine coolant temperature. the scan tool displays engine coolant temperature in degrees. It's a 3 4" deep socket, or wrench, whatever fits once you get the replacement ready. only a cupful or so of coolant will come from up that high in the engine, if it's topped off. (if you drain ~1gal from a lower spot you can control, it'll be almost nothing, and you can refill after.). 1. your check engine light is on: if the engine’s computer detects a problem with the coolant temperature sensor, or its circuit, it will turn on the check engine light. 2. your engine stalls: when the engine is first started, it will require more fuel in order to idle smoothly until it’s warmed up. the signal from the coolant temperature. The 3800 almost never blows head gaskets, but it does have a problem with the intake manifold cracking. since it causes the engine to burn antifreeze, the symptoms are very similar to a blown hg. i wonder if they're just replacing the head gaskets over and over when the intake is the real problem.
How To Change A Coolant Temperature Sensor 1. your check engine light is on: if the engine’s computer detects a problem with the coolant temperature sensor, or its circuit, it will turn on the check engine light. 2. your engine stalls: when the engine is first started, it will require more fuel in order to idle smoothly until it’s warmed up. the signal from the coolant temperature. The 3800 almost never blows head gaskets, but it does have a problem with the intake manifold cracking. since it causes the engine to burn antifreeze, the symptoms are very similar to a blown hg. i wonder if they're just replacing the head gaskets over and over when the intake is the real problem. Step 1: be sure the engine is cool. locate the main pressure cap for the cooling system and open it enough to relieve any pressure in the cooling system, then reinstall the cap so it seals properly. step 2. locate the coolant temperature sensor. many engines have multiple sensors that look similar to each other, so an investment in either a. Had a "c" 3800 completely apart some time ago and only remember one coolant temperature sensor, the one under the throttle assembly. might be a level sensor on the radiator but not at home as usual. is also an intake air temperature sensor in the air cleaner assembly.
Gm 3 8 Liter Coolant Tube Replacement 3800 Series Iii Coolant Leak Step 1: be sure the engine is cool. locate the main pressure cap for the cooling system and open it enough to relieve any pressure in the cooling system, then reinstall the cap so it seals properly. step 2. locate the coolant temperature sensor. many engines have multiple sensors that look similar to each other, so an investment in either a. Had a "c" 3800 completely apart some time ago and only remember one coolant temperature sensor, the one under the throttle assembly. might be a level sensor on the radiator but not at home as usual. is also an intake air temperature sensor in the air cleaner assembly.
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