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My temperature display shows low readings - Sta Rite Pool & Spa

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Water pressure. jump the pressure switch. if it runs then replace the switch. ensure proper waterflow from pump

Posted on Aug 07, 2013

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Why does the temperature gauge on my 1995 Chevy K2500, 5.7L read 150 degrees ?


If you replaced the SENSOR and not the gauge SENDER, there's your answer.

The SENSOR sends the computer (ECM, PCM, ECU, etc.) the engine temp so it can make the adjustments to the fuel, timing etc.

The gauge SENDER makes the gauge read what temperature the engine coolant is.

Hope the helps.

Feb 21, 2015 | 1995 Chevrolet K2500

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BEACHCOMBER HOT TUB NO DISPLAY


This could be failure of the display, the controller, or both.

Dec 12, 2013 | Jacuzzi Pool & Spa

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Replacing oven sensor on GE Range JGSP31GER1WG


You can try the new thermostat and if the temp is still off, then you you will need to replace the control.

Dec 29, 2011 | Whirlpool Stove Oven Sensor 8053344

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Code p117


P0117 - Engine Coolant Temperature (ECT) Circuit Low Input
The ECT (Engine coolant temperature) sensor is a thermistor located in the engine block or other coolant passage. It changes resistance with changes in temperature of the coolant that it's in contact with. It's usually a two wire sensor. One wire is a 5 volt reference from PCM (Powertrain Control Module) and the other is a ground supplied from PCM.

As the temperature of the coolant changes, the resistance of the sensor changes. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a signal voltage lower than the normal operating range of the sensor then P0117 code will set.


Potential symptoms include:
MIL (Malfunction Indicator Lamp) illumination
Poor fuel economy
Poor drivability
Engine may run rough or blow black smoke out the tailpipe
May not idle
May start and then die

Causes: Potential causes of the P0117 code include:
Bad ECT sensor
Short to ground on ECT signal circuit
Faulty or damaged connectors
Wiring harness damaged
Loose terminals at ECT or PCM
POSSIBLY an overheated engine
Bad PCM

Possible Solutions:
Since this code is for an abnormally low signal to the PCM from the ECT, the PCM saw a excessively "hot" condition in the engine coolant. This could be due to faulty ECT sensor or wiring, but it could, conceivably, be caused by an overheated engine.So if your engine was overheated diagnose that first. Having said that here are the possible solutions:

Using a scan tool, with KOEO (Key on engine off) check the ECT reading on the display. On a cold engine the ECT reading should match the IAT (Intake Air Temperature) sensor reading. If it doesn't, replace the ECT sensor.

1. If the ECT reading is showing an excessively hot reading, for example more than 260 deg. F, then unplug the ECT sensor. This should cause the ECT reading to drop to the extreme cold reading (around -30 deg.F or so). If it does, replace the sensor, because it's internally shorted. If it doesn't change the reading, the check for a short to ground on the signal circuit of the ECT wiring. It could be that the two ECT wires are shorted to each other. Look for any chafing or melted wiring. Repair as necessary.

a. If you can't find any wiring problems and the ECT reading doesn't drop to the extreme coldest when unplugged, then, check for voltage coming out of the PCM on the signal wire's pin at the PCM connector. If there isn't any voltage, or it is low, then the PCM may be bad. NOTE: On some models it is possible for the 5 Volt reference signal to be temperarily shorted. This can happen if an engine sensor internally shorts the 5 Volt reference. Since the 5 Volt reference is a "shared" circuit on many models, this will cause it to be abnormally low. Usually, though this will be accompanied by several other sensor codes. If you suspect that may be the case, unplug each sensor until the 5 Volt reference reappears. The last sensor unplugged is the offending sensor. Replace and recheck the signal wire from the PCM connector

2. If the scan tool ECT reading seems normal at this time then the problem may be intermittent. Use a "wiggle" test to manipulate the wiring harness and connectors while watching the ECT reading on the scan tool. Repair any wiring or connectors that are loose or corroded. You could check the Freeze frame data if your scan tool has that function. It will show the ECT reading when the failure occurred. If it shows the reading to be at the hottest extreme then replace the ECT sensor and see if the code reappears.

Hope this helps (remember to rate and comment this answer).

Jun 16, 2011 | 1997 Honda Accord

1 Answer

Showing a LP on display. What are the possible problems?


Here is the reason for that problem per the manufaturers web-site

http://www.haywardnet.com/products/Manuals/pdfs/Manual122.pdf

The low-pressure switch senses the refrigerant pressure in the sealed refrigeration system to

protect against certain conditions that could be detrimental to compressor life. The switch shuts

the unit down in the event of loss of refrigerant, fan motor failure, evaporator freeze-up and

airflow blockage. The switch automatically resets when the pressure rises to normal operating

pressures. The display will show "LP" if this switch is tripped.

Evaporator Freezing

The low-pressure switch will shut the heat pump down when the evaporator starts to freeze.

When the unit starts to freeze the low-pressure switch will be tripped, causing the display to read
"LP" This will prevent the evaporator from becoming damaged or deformed.

If the air outside the heat pump is not warm enough to produce heat, the system will shut down.

The actual point at which your unit will shut down due to low temperature varies depending on

which model you purchased, current weather conditions, and the amount of sunlight reaching the

heat pump. The shutdown can occur anywhere within a wide range of temperatures, usually 45°F-

55°F. This is not a "fixed" range. We stress that climate conditions, sunlight, and various models

respond quite differently to low ambient temperature. A shutdown occurs because low

temperatures will activate the systems low-pressure safeguard switch (digital thermostats will

display a code "LP".) The unit will start up again when the temperature has raised enough to reset

this switch. Note: Low ambient temperature does not necessarily affect the Chiller models
or the cooling cycle of the heat/cool units.

If this post has helped you, please take the time to vote positively for me on this site. If you need additional help, I can be reached @: adamh@newconceptchem.com

thanks,

adam

Oct 23, 2010 | Hayward Heatpro 81k Btu Swimming Pool Heat...

1 Answer

The temperature display on the rear view mirror shows OC


The temperature display on the rear view mirror my 2002 Trailblazer LT is either way incorrect - like obviously too high or too low - but mostly just shows "OC" all the time. Is this an expensive fix? Is this an easy fix that I could do myself? What do I need to replace and how

Jun 30, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

3M Precision Digital Atomic Wall / Desk Clock with Indoor & Outdoor Temperature and Alarm will not display outdoor temp, i have replaced batteries, outdoor sensor is transmitting, does not appear to...


After replacing the transmitter batteries several times, I tried replacing the clock batteries. They must have been getting low. Once I put in new batteries in the clock it worked fine. Good Luck.

Aug 30, 2008 | SkyScan 86742 Digital Atomic Wall Clock

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