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1998 SLK200 Mercedes low coolant light replaced sensor as coolant level was okay.

Temp guage shows engine is not overheating however the low coolant light will not turn off how do i reset my car does not have a obd connecter as it is a European model.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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emissionwiz
  • 84625 Answers

SOURCE: Temp sensor needs to be replaced

this does not mean the sensor is defective, it most likely means the engine thermostat is stuck open and the engine is not running hot enough to satisfy the computers preset temp requirements for minimum eng operating temp.

Posted on Apr 08, 2009

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emissionwiz
  • 84625 Answers

SOURCE: replace coolant level sensor

THESE SENSORS ARE A KNOWN PROBLEM REPLACE IT, IT IS HELD IN BY A WIRE RETAINER CLIP, IT IS LOCATED IN THE PLASTIC SIDE TANK OF THE RADIATOR NEAR THE TOP OF THE TANK, ENGINE SIDE. THE PART IS ABOUT $60.00

Posted on Jul 17, 2009

ZJLimited
  • 17970 Answers

SOURCE: where to replace coolant temp sensor for 1998 grand jeep cherokee

Check this image...

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...in the Section ZJ-Secc-8D-Ignition-Systems (page 5, fig. 10 and 11).

Good luck.



Posted on Sep 07, 2009

  • 1986 Answers

SOURCE: Low coolant sensor on a 1998 buick

The coolant sensor should be located near where the upper radiator hose is attached to the engine and has a wire connector on it with 2 wires. It's the only sensor near there. Then there's the sensor that'll be attached to your reservoir tank somewhere along the firewall

Posted on Sep 16, 2009

Testimonial: "Thanks so much for your help! We went right to it!! "

dj_relly999
  • 4070 Answers

SOURCE: HI, MY CAR RUNS PERFECT, BUT LOW COOLANT LEVEL

Hi! Please check the coolant reservoir for it may need to be filled up a little. Hope this helps and have a good one!

Posted on Jul 10, 2010

Testimonial: "THANKS"

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1 Answer

2000 vw beetle 2.0 L, low level coolant light...engine mil code 1256


not the pump but air in the system or a broken wire to the coolant level sensor
that sensor at the top of the radiator tank has to be completely immersed in coolant or the circuit is broken and the light comes on
same effect id the wire to that sensor is broken in the insulation

Jun 16, 2017 | Cars & Trucks

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1998 Chevy Camaro - Temp guage reads 50 degrees hotter than what Scanner shows


Check the ground wires at battery to car body, battery to engine and the ground interconnect between the engine and the car body.

Jun 09, 2017 | Chevrolet Camaro Cars & Trucks

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P0128 (and P0116) on 2006 GMC Sierra v-8, 5.3L, 4x4. Originally getting low temp readings on guage. After replacing the thermostat, the problem seemed to be fixed. A few days later, I was getting my...


P0116 - Engine Coolant Temperature (ECT) Circuit Range/Performance Problem
The ECT (Engine coolant temperature) sensor is a thermistor which changes resistance based on temperature of the coolant in contact with it. The ECT sensor will be located in the block or coolant passage. Usually it is a two wire sensor. One wire is a 5 Volt supply from the PCM (Powertrain Control Module) to the ECT. The other is a ground to the ECT.

As the temperature of the coolant changes the resistance on the signal wire changes accordingly. The PCM monitors the reading and determines coolant temperature in order to perform essential engine fuel management. When engine coolant is low, sensor resistance is high. The PCM will see a high signal voltage (low temperature). When coolant is warm, the sensor's resistance is low and the PCM will see a high temperature. The PCM expects to see slow resistance changes on the ECT signal circuit. If it sees a quick change in voltage that isn't consistent with an engine warming up, this P0116 code will set. Or if it sees a lack of change in ECT signal, this code may set.

Symptoms: There may be no noticeable symptoms if the problem is very intermittent, however the following may occur:
MIL (Malfunction Indicator Lamp) illumination
Poor drivability
Black smoke at tailpipe
Poor fuel economy
May not idle
May exhibit stalling or misfires

Causes: Potential causes of the P0116 code include:
Missing or stuck-open thermostat
Bad ECT sensor
Short or open on signal wire
Short or open on ground wire
Poor connections in wiring

Possible Solutions: If there are any other ECT sensor codes, diagnose them first.
Using a scan tool, check the ECT reading. On a cold engine, it should match the IAT reading or should be equal to ambient (outside) temperature reading. If it does match the IAT or ambient temp, check the freeze frame data on your scan tool (if equipped). The saved data should tell you what the ECT reading was when the fault occurred.

a) If the saved info indicates that the engine coolant reading was at the coldest exreme (around -30 deg. F) then that's a good indication the ECT resistance was intermittently high (unless you live in Anchorage!) Check for an open in the ECT sensor ground and signal circuits and repair as necessary. If they appear okay, warm the engine up while monitoring the ECT for any intermittent jumps high or low. If there are replace the ECT.

b) If the saved info indicates that the engine coolant reading was at the warmest exreme (around 250+ deg.F) then that's a good indication the ECT resistance was intermittently low. Check for a short to ground on the signal circuit and repair as necessary. If it appears okay, warm the engine up while monitoring the ECT for any intermittent jumps high or low. If there are replace the ECT.

Other ECT sensor and circuit related DTCs: P0115, P0117, P0118, P0119, P0125, P0128
--------------------------------------------------------------------------------------------------------------------

P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 code is to indicate a faulty thermostat. Similar codes: P0125

In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.

Symptoms: You will likely not notice any drivability problems other than the MIL illumination.

Causes: A code P0128 may mean that one or more of the following has happened:
Low engine coolant level
Leaking or stuck open thermostat
Faulty cooling fan (running too much)
Faulty coolant temperature (ECT) sensor
Faulty intake air temperature (IAT) sensor

Possible Solutions: Past experience indicates that the most likely solution is to replace the thermostat. However here are some suggestions on troubleshooting and repairing a P0128 OBD-II code:
Verify coolant strength & level
Verify proper cooling fan operation (check if it's running more than it should). Replace if necessary.
Verify proper engine coolant temperature (ECT) sensor operation, replace if necessary.
Verify proper intake air temperature (IAT) sensor operation, replace if necessary.
If the above items check out good, replace the thermostat
If Nissan vehicle, check for Technical Service Bulletins (TSBs), as the ECM may need to be reprogrammed to correct the P0128 code



These codes are telling you that the engine temperature is not sufficient. This can be caused by a faulty coolant sensor,air in the cooling system,or a faulty computer.
The engine should run at 190 F & higher when warmed up. Scan the computer system to view engine temperature.

Keep us updated.

Oct 01, 2011 | 2006 GMC Sierra

1 Answer

The engine light is on and refrerring to the coolant? what mite it be?


Either the coolant level is low or the thermostat is not opening and car may be overheating.
Watch your temp guage to make sure it's not in the red. That can damage your head gasket.

Low coolant level, air in the coolant system, faulty thermostat or temp sensor can all cause this.

May 16, 2011 | Ford Ranger Cars & Trucks

1 Answer

LOW COOLANT LIGHT COMES ON SOMETIMES AND TEMP GUAGE SHOWS ENGINE GOING TO OVERHEAT. HEATER GETS COLD. IS IT THE THERMOSTAT?


There may be a thermostat problem, but your symtoms indicate low coolant level. When coolant is too low, it will not circulate, so you get no heat in car, and the coolant remaining in engine block overheats because no cool fluid coming in.
You need to fill the system up properly then look for leaks.
With cold engine, open radiator cap. Fill with antifreeze directly in radiator. Start engine, top up rad if level drops. Put heat control on Hot. Fan on low, heat on high. Gently rev engine and top up rad as needed. IF as engine heats up, it starts kicking fuild violently out of radiator, then the thermostat is bad. if not, then recap radiator, top up overflow bottle and you're done. Look under car for any sign of leaks. Steady dripping indicates a leak, then address that.

Feb 27, 2011 | 1998 Chevrolet Monte Carlo

1 Answer

2006 impala. indicator light says "engine hot, A/C off". but temp guage is showing it is cold


cold or normal temp? Check coolant level. if the level is low, the temp sensor cant read correctly

Nov 30, 2010 | Chevrolet Impala Cars & Trucks

1 Answer

My check engine light is on, and today my temperature gauge stopped working and we have replaced the engine coolant sensor and the connector and temperature gauge still not working. PLEASE HELP


Could be the thermostat. I know nothing about cars but I noticed my 2000 Grand Prix temp gauge was not going to the normal level. My wife drives this car so I didn't notice it for a month or so. Eventually the Engine light came on. Took it to Autozone and the code came back as P0180... (1) low coolant (2) bad thermostat (3) enginge fuel temp sensor. They used a code reader that was about the size of an Ipod nano.

Coolant was okay, so took it to my mechanic. His netbook sized computer showed it was the Thermostat. He reset the codes and the temp guage went back to normal. Was short on $40 for the fix at the time, so I parked the car and promised to bring it back in 3 days. Went out and checked the car a day later at 25 degrees outside without starting the car... gauge still sitting at the normal level. No question it's the thermostat. That car will not be driven again until T.stat is fixed in 2 days.

Oct 18, 2010 | 2004 Pontiac Grand Prix

1 Answer

Temp guage goes up and check engine light comes on


If engine is overheating then check coolant level and thermostat first, then water pump. If engine is not overheating then check coolant temp sender for gauge.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/thomas_c50676e836a18949

Jan 08, 2010 | 2006 Chevrolet Cobalt

3 Answers

97 saturn sl2 temp light flashing and low coolant light flashing what could be the problem ? coolant is full and the heat works.


If the temp gauge is reading normal, the lights are flashing, and the coolant level is full, the level sensor in the coolant bottle is the problem. I'm a service consultant for a Saturn dealer and I've run across this many times.

Apr 17, 2009 | 1997 Saturn SL

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