Question about 1998 Pontiac Firebird Trans Am

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1998 trans am trouble code po118 coolant temp.circuit high imput?

Is there a difference between coolant temp. sensor and coolant temp. sending unit?

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Molson02536
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SOURCE: 1998 PONTIAC SUNFIRE ADVISE

Exhaust Gas Recirculation System Is the main problem here. the other code P0118 may be a bad temprature sensor or your thermostate needs to be changed. Last it could be a weak water pump. 

So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions. These systems are mostly comprised of the EGR valve, a DPFE (Delta Pressure Feedback EGR) sensor, hoses, a vacuum regulator, some vacuum lines, wiring, the computer and the exhaust tube leading to the valve itself. 
The car's wiring can be tested in the normal fashion by looking for broken and lose wire, and all vacuum lines can be checked easily for cracks, leaks and correct routing.
The last thing i would then check is the the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor).
I hope this helps and good luck

Posted on Apr 09, 2009

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SOURCE: po 113 intake air temperature sensor 1 circuit

Inspect the IAT sensor and wiring. The sensor is located in the air induction tube near the air filter. I've seen these wires break at the connector.

Posted on Feb 25, 2010

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Trouble codes p0118 temperature po118


code p0118 refers to engine coolant temperature (ETC) sensor ---circuit malfunction===causes---coolant thermostat---wiring open circuit/short to positive---wiring short to ground---ground wire defective---ECT sensor.. The temp gauge works off a temperature sender unit separate to the coolant sensor and if it is reading 100 then it indicates an overheat situation in the engine . Probably why the engine light is coming on. As the thermostat is in the list of causes I would replace it as a precaution. The coolant sensor is what tells the CPU to turn on the electric fans to cool the radiator

Jan 13, 2014 | 2004 GMC Envoy

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1998 buick park avenue code po118


Code 118 is for the coolant temp sensor out of range and code 108 is for the map sensor out of range.
Could be faulty sensors but I would think it is a wiring problem since two sensors seldom fail at the same time.

Aug 17, 2012 | Buick Park Avenue Cars & Trucks

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Need obd trouble codes & meanings


here r your trouble code meanings:
1) p0123-throttle position sensor circuit, high input.
2)p0117-engine coolant temperature circuit, low input.
3)p0118-engine coolant temperature ciurcuit , high input.

Jun 18, 2012 | 1997 Plymouth Breeze

1 Answer

Trouble Codes


P0446 Evaporative Emission System Vent Control Circuit error.

P0118- (ETC) Engine Coolant Temperature sending unit, high input. Your ETC is either faulty or has a poor wiring problem.

P0740 Torque Converter Clutch System Malfunction.

Jan 13, 2012 | 2002 Kia Sedona

2 Answers

I have three codes p1624 p0763 p0713


hi, dear friend, this is an obd2 trouble code tabkle, it can help you understand the meaning of code.
and this is tool can help you clear it.

Jun 20, 2011 | 2000 Kia Sephia

1 Answer

The check enging light comes on then goes off. I foud out the code po118 engine coolant temp circut high input. is it the coolant temp sensor. if so how do I replace it. It is on a 2004 jetta tdi


According to Autozone.com:

Because ECT (engine coolant temperature) sensor procedures vary depending upon their location, first locate the part. You may need to partially drain the engine coolant to prevent coolant spillage.
  • Disconnect the negative battery cable.
  • Unplug the ECT.
  • Then, unscrew it.
  • Reverse the removal procedures to install the new part.
  • Connect the negative battery cable to the battery.



    Related Parts:
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Coolant Temperature Sensor printpage_icon.gif



0900c152801bfc38.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Remove the coolant temperature sensor
The coolant temperature gauge sensor is a temperature-variable resistor, or thermistor. As coolant temperature increases, the resistance of the sensor decreases or decreases, depending on the type of sensor.
A1 and A2 platforms use a different type of circuit that A3 vehicles. On A1 and A2 vehicles, the circuit is a "resistance to ground" type. A3 vehicles use a "variable voltage" type, where a voltage is supplied to the sensor. Because of the circuitry design on A3 vehicles, testing of the coolant temperature gauge is limited.
The engine coolant temperature gauge uses a heat sensitive sending unit to transmit an electrical signal to the gauge. The sending unit is a heat sensitive variable resistor that is located on or near to the cylinder head and threads into an engine coolant passage. The sensors are a Negative Temperature Coefficient (NTC) type. As the temperature increases, the electrical resistance of the sensor decreases. As the coolant temperature changes, so does the resistance of the sensor. The gauge is calibrated within the operating range of the sensor and interprets the resistance value to display the coolant temperature.
Beginning with model year 1994, the engine coolant gauge and the Engine Control Module (ECM) temperature sensors were combined into one sensor with 4 terminals. The basic operation remains the same in that their resistance decreases as the coolant temperature increases, however the actual resistance values of the 2 sensor circuits are different. The electrical connector of the 4-wire terminal sensor ( 1 and 2 ) is keyed to prevent improper connection of the sensor's electrical circuit.

0900c152801bfc39.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Beginning with model year 1994, the Engine Coolant Temperature Sensors combined the sensors for the ECM and the gauge into one sensor-1997 2.8L V6 sensor shown


0900c152801bfc3a.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. The electrical connector for the combined temperature sensors is keyed to avoid improperly connecting the sensor's wiring-1997 2.8L V6 connector shown

Oct 17, 2010 | 2004 Volkswagen Jetta

1 Answer

Code 463 fuel level sensory high imput, what is this and where is it located


Not sure if this helps or not, but here is information from the 1998 Jeep Grand Cherokee Service Manual, ezg_25.pdf, page 6 of 20…

Hex Code = 95
Generic Scan Tool Code = P0462
DRB Scan Tool Display = Fuel Level Sending Unit Volts Too Low
Description of Diagnostic Trouble Code = Open circuit between PCM and fuel gauge sending unit.

Hex Code = 96
Generic Scan Tool Code = P0463
DRB Scan Tool Display = Fuel Level Sending Unit Volts Too High
Description of Diagnostic Trouble Code = Circuit shorted to voltage between PCM and fuel gauge sending unit.

Hex Code = 97
Generic Scan Tool Code = P0460
DRB Scan Tool Display = Fuel Level Unit No Change Over Miles
Description of Diagnostic Trouble Code = No movement of fuel level sender detected.

for additional information on troubleshooting and resolution:
http://rapidshare.com/files/138412864/ServiceManual.Jeep.Grand.Cherokee.1998_by_Parasico.rar

Mar 01, 2010 | 1998 Jeep Grand Cherokee

2 Answers

Code PO118 chevy blazer 2002,after intake gasket replacement


hi john , sure sounds like you may have unplugged the coolant temp sensor or didn't get a good connection at the sensor , location , in between two exhaust ports on the side of the engine that has the oil fill and pcv .

J5

Jan 27, 2009 | 2002 Chevrolet Blazer

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