Question about 2002 Chrysler PT Cruiser

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Temperature hand going one notch over normal and engine light on. Engine light has been on for months. Temperature hand just fluctuating over normal for 4 days. antifreeze forcefully shooting out of reservoir with pressure. no leaking or antifreeze in oil.

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Sounds like thermostat

Posted on Apr 25, 2010

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3 Answers

Why does my temperature gauge keep going up and down


An accurate temperature gauge will always fluctuate because the temperature in the engine fluctuates.

Usually the only time this is really noticeable is when the engine has been working hard and suddenly has to wait at a junction or similar and the gauge can rise considerably.

You didn't mention by how much the gauge fluctuates?
As long as it remains approximately in the normal zone it is acceptable but if it climbs into the hot zone or falls into the cold zone it is not acceptable and the cause should be investigated as soon as possible.

May 02, 2016 | 2008 Peugeot 308 1.6

1 Answer

My car engine stop running suddenly without any warning in neutral gear position, although I've check using OBD 2 reader there's no error detected. What usually causing this problem?


Hi

have you considered the ignition module that the coil pack sits on because that will cause your motor to randomly stop with out warning.

25718641-extj4arg1t42xbh3l3byl5v2-3-0.jpg
also the crank and cam angle sensor smay need to be considered depending on the vehicle

25718641-extj4arg1t42xbh3l3byl5v2-3-1.jpg


cheers

May 29, 2015 | Cars & Trucks

1 Answer

WHEN DRIVING UP HILL, TEMP GAGE ALMOST AT THE TOP.


If no hose leaks and engine coolant is fine in radiator. I would say its a faulty thermostat. A malfunctioning thermostat would result in temperature fluctuations throughout the operation of the engine. God-Bless!

Mar 23, 2015 | 2006 Nissan Murano

1 Answer

What causes hyundai Elantra 2002 tempature gauge fluctuates between normal and hot


The thermostat "seals" the cool coolant giving up (rejecting) heat in the radiator & heater core from the hot coolant absorbing heat in the running engine "block".

When the coolant in the engine reaches a specific temperature (180 ~ 195 degrees) as determined by the value selected by manufacturer or when replaced, it opens and allows the hot coolant in the engine block to be pumped out to the radiatot & heater core for cooling and the cool coolant in the radiator / heater core is pumped into the engine block - replacing the hot coolant. The thermostat senses cool coolant in the engine block and seals shut until the temperature of the coolant in the engine block rises to 180 ~ 195 degrees again. This process continues over and over for as long as needed.

You should check to make sure that the coolant level in the reservoir / radiator is sufficient by checking when cold. Do NOT remove a radiator cap when it is hot! With the cap off, start the engine and add additional coolant as the engine warms up to normal operating temperature. If coolant levels are ok, the trouble could be related to the thermostat or possibly a faulty temperature sending switch. This means that the temperature of the coolant is fine - but the switch or sensor that converts the temperature to a voltage for the gauge on yur dashboard is the problem.

If the temperature is fluctuating up and down, you should have it fixed. Good luck!

Apr 12, 2013 | 2002 Hyundai Elantra GT

1 Answer

Why would a 1994 Oldsmobile Achieva S quad 4 engine temperature gauge fluctuate between 195 & 220 degrees? The thermostat has been changed and the engine and radiator have been flushed. The normal...


either the thermostat is getting ready to fail or the temp sensor isnt working properlythese engines also leak fluid from rear side of head after getting hot so check that so may have air in system because of the blown head gasket

May 28, 2011 | 1994 Oldsmobile Achieva Special Edition

1 Answer

Engine Temperature Fluctuation


fluctuation in temperature is usualy from low coolent level. a sticky thermastat could also be the culprit.

Nov 21, 2009 | 2004 Buick LeSabre

2 Answers

Antifreeze ts boiling back into reservoir. Possibly not circulating properly. Thermostat problem? Temperature fluctuates with changing load on engine. Approaches the overheating "red zone" with an extended...


it sounds like a possible head gasket problem,you can get the fluctuation from combustion gases getting pumped into your cooling system and creating gas pockets,i would suggest taking it to a shop and have them do a block test to look for combustion in the cooling system to confirm the problem,that way you will know for sure,if it comes up negative they can also perform a flow test to make sure there is no restriction in the cooling system such as a plugged radiator or a bad thermostat,hope this sheds a little light on it

Sep 12, 2009 | 2001 Chevrolet Venture

1 Answer

Fluctuating engine temp a/c sends out cold air intermittently


Here's the thing. The ECU will shut down AC if the engine temperature is too hot. If the coolant temperature sensor is malfunctioning (lying to the ECU) telling it that the temperature is hotter than it actually is, the computer will turn the AC OFF.

Sep 11, 2009 | Hyundai Motor 2003 Elantra

1 Answer

2001 dodge stratus engine temperature gauge spikes occasionally


Look for a loose connection to the temperature sender unit on the motor.
If all connections OK, you may need a new temp sender unit.

Jul 28, 2009 | 2002 Dodge Stratus

1 Answer

1994 LeBaron GTC convertible temp fluctuations!


have you checked the coolant in the radiator? if overflow jug was empty radiator is probably low as well. always check when engine is cold. if you are low in coolant it will cause the fluctuation

Sep 26, 2008 | 1994 Chrysler LeBaron

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