Question about 1997 Saturn SL

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Engine in car will not turn over but car never runs hot

I have changed the sensor on the top of the manifold and the one in the radiator, I have even replaced the battery. The car never runs hot but if you drive 65mph on freeway or make 3 stops turning off the engine each time at the 3rd stop car will not turn over until you raise the hood and let it cool off for about 15 min/and 45 min if you don't raise the hood. The temperature gauge never goes above a half.

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  • 111 Answers

If this car has a distributor, maybe check inside of it. If you can see a round plastic disc in there with a metal tab attached to it, this might be the problem. It's a pick-up coil. When these go bad, the heat from the engine makes them shrink and the tab cannot conduct electricity that is sent to your plugs. Mine was $40 on my truck. Hope this helps.

Posted on May 24, 2009

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6 Answers

Sometimes my car will start to run hot and then it will run ok checked for water it was good cant see or find any leaks. Do you think the radiator might be clogged?


could be or the thermostat getting stuck check your cool in fan motor too and sensor it all works in conjunction any if the radiotor is bad you should replace the thermostat .good luck.hugos1915 @live.com.

Apr 18, 2015 | 2002 Pontiac Grand Am

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I have change the sensor and gauge and still my car temp. gauge moves to the hot zone right away. what elese can it be. I even check the relay is good.


Try disconnecting the sensor. then turn on the ignition switch and see what the guage dose. If it still goes to the top, chances are there is a short in the wiring. If it does nothing, chances are you have a defective sensor.

Apr 03, 2015 | 1993 Toyota Corolla

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1998 saab 9.3 has just started overheating. no obvious leaks. the coolant system reseviour is boiling hot water


The classic cause of this is a head gasket leak to the coolant jacket, which will cause quick overheating.

You may see white bubbles in the coolant like dry ice, if you start the car from cold, allow the temp gauge needle to just move off the stop, then remove the radiator cap by grasping it through a large towel spread wide on top. Look then down the radiator neck while the engine runs and warms up.

There is a simple test for combustion gases in the coolant, which your local mechanic can do.

https://www.youtube.com/watch?v=a3J00_e7fyo

Oct 26, 2014 | Saab 9 Cars & Trucks

1 Answer

Running hot when car is't in motion


1.check coolant level---must open bleed valve above thermostat when adding coolant. 2. Are fans radiator fans running when car ovrheats & is air comming off of radiator hot? 3. Check/Replace thermostat. 4. There is a plastic elbow that connects from the intakke manifold to the engine block on the passenger side of car that arrre notorioous for cracking / leaking.... 5. The heater core on `05 Impala does not close when heater is turned off so does not benifit overheating by turning heater on.

Jan 12, 2013 | 2005 Chevrolet Impala

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2003 mountaineer V8 Temp gauge jumps to hot not over heating. Replaced thermostat, no change


The Engine Temp. sensor is bad. it is under the intake manifold. if there is a miss also check under the coils over the spark plugs. If there is Coolant in the spark plug holes .then the intake gasket is leaking. The intake manifold needs to come off to change the coolant sensor. When off look for corrosion on the cylinder head at the coolant port. If there is corrsion then the cylinder head must be replaced.

Jan 06, 2013 | 2003 Mercury Mountaineer

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Coolant level keeps changing


coolant contracts when cold expands when hot this is normal

Sep 09, 2012 | 2005 Ford Focus 1.6

1 Answer

Overheating problems for 1987 chevy K5 Blazer


Is it possible the replacement engine has a water pump that turns the opposite direction from the original ?
The thermostat has to be open to allow flow thru the radiator, have you tried running without a thermostat to check flow ?

Jul 24, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

The radiator fan dosent run. i changed the relay


Does it not run at all? Or does it only run after the fiero gets really hot (like sitting in traffic on a 90 degree day)?


But a low-temp fan switch (sensor), which causes the fan to turn on at a much more reasonable level. I think the stock switch doesn't turn on till it reaches 235 degrees or something.

The switch/sensor is located near the top of the engine (on passenger side end of engine area, opposite end of the throttle body).

Buy it here (or other places have them too)
http://www.rodneydickman.com/n20.html

You should be able to see where it installs by matching up the new part with the old, pretty easy operation. A little coolant might squirt out, so only do this when the engine is cold.

Hope this cures it

May 07, 2010 | 1986 Pontiac Fiero

1 Answer

Radiator fan running after engine turned off on 98 nissan altima


You need to diagnose the problem. The fan is doing what it is being told to do by the computer. You stated the temp gage on the dash is in the HOT position. Either the engine is very hot and the fan needs to run to remove heat even after it is shut off or the gage, coolant sensor or temp sender is defective. Try running it temporarly without a thermostat and see what happens, you may have bought a defective thermostat.

Oct 06, 2009 | 1998 Nissan Altima

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82 chevy s10 running hot i just got got it and iv been fixing it up its running great but it runs very hot is it normal


with older model vehicals.you need to check your thermostat or change it,on your yearly tune-up,from fuses to filters

Jul 27, 2009 | 1999 Chevrolet S-10 Pickup

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