Question about 1993 Jeep Grand Cherokee

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The little panel that shows the vehicle is flashing a red light across the front of the vehicle. Then "Engine Coolant Low" comes up even though the radiator is full of coolant. How do I reset it? Thanks, Meri

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These days that little light is triggered by the level of the coolant in the overflow reservoir. Assumption being you should keep an eye on that. So I would check the coolant reservoir, generally an opaque plastic jug connected to the radiator by a hose, for a switch or sensor. I would start by removing the whole thing and giving it a good rinse in case that has never been done, and replace that sensor which could well be a dealer item.

Posted on Sep 15, 2010

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My check engine light comes on, no flashing just stays on for a few days then turns off, no problems running tho! All I can see is maybe coolant is a little low...would that do it?


go have code read most auto stores will scan vehicle for free ---code will give you start point for vehicle problem flashing light means requires immediate attention steady light some type of problem occurred that computer is letting you know ----low fluid can set off a code depends on your vehicle and you didnt advise what vehicle this is

Aug 27, 2015 | Cars & Trucks

1 Answer

The engine management light is on, and the air bag light is illuminated in red on the dash. The heater is not blowing hot air, although the coolant level is fine. There is a 'whirring' noise


I suggest scanned the computer car in order to know what fault codes is stored there.

When the light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. These DTCs remain even if the light goes out. To address a Check Engine Light problem, the DTCs are retrieved and the appropriate troubleshooting information is followed in order to determine the problem.

The Four Most Common Check Engine Light Scenarios and What to Do:
* The Check Engine Light turns on and off or flickers.
If the Check Engine Light comes on in the city but goes off on the freeway, then the fault is present during city driving conditions. Pay attention to whether or not the vehicle runs or drives any differently when the Check Engine Light illuminates. If vehicle performance does change, drive the car as little as possible and take it to be checked by a service professional as soon as possible. If there is no change in vehicle performance, you can drive home, but have it inspected as soon as possible. In this condition, you run a risk of the vehicle dying or not starting.

* The Check Engine Light comes on and stays on.
If the Check Engine Light illuminates constantly during driving with no noticeable driving or performance problems, there is a permanent fault in the emission control system. When this happens, the computer that controls the emission system usually has a backup program that runs while the fault is present. (These backup programs are often referred to as "limp home" mode programs.) You should get the vehicle serviced as soon as possible, but in most cases, the vehicle will continue to operate, though you run a risk of it dying or not starting.

* The Check Engine Light illuminates, stays on, and there are performance problems.
This means that a vital component of your emission control and engine management system has a serious problem. It usually involves a component or system needed for the vehicle to run at all. In most cases, drive the vehicle as little as possible. In many cases, the vehicle is not safe to drive at all -it could stop or stall out at any moment. It is best to pull over to a safe place and have the vehicle towed to an automotive diagnostician for a thorough inspection and repair.

* The Check Engine Light light comes on and blinks in a steady pattern while driving.
Don't confuse this steady pulsing of the Check Engine Light light (usually one or more flashes per second) with a flicker (see above). The Check Engine Light may stay on steadily or it may flash when the vehicle is accelerated. This is very serious. There is a severe failure of the emission control system that is causing the engine to misfire to the point that the catalytic converter is damaged each time the Check Engine Light flashes. It may mean that the catalytic converter is overheating to the point that it will glow red or, in extreme cases, start a fire on the underside of the vehicle. Immediately pull over to a safe place and have your vehicle towed to an automotive diagnostician for repair. Vehicles can be severely damaged and even destroyed by fire if this condition is ignored for too long.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Sep 14, 2012 | Cars & Trucks

1 Answer

2008 Grand caravan will not start. It has a blinking engine light. I found a bad coolant hose and most of the coolant has leaked out. The battery is fine.


When the light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. These DTCs remain even if the light goes out. To address a Check Engine Light problem, the DTCs are retrieved and the appropriate troubleshooting information is followed in order to determine the problem.

The four most common Check Engine Light scenarios and what to do:
* The Check Engine Light turns on and off or flickers.
If the Check Engine Light comes on in the city but goes off on the freeway, then the fault is present during city driving conditions. Pay attention to whether or not the vehicle runs or drives any differently when the Check Engine Light illuminates. If vehicle performance does change, drive the car as little as possible and take it to be checked by a service professional as soon as possible. If there is no change in vehicle performance, you can drive home, but have it inspected as soon as possible. In this condition, you run a risk of the vehicle dying or not starting.

* The Check Engine Light comes on and stays on.
If the Check Engine Light illuminates constantly during driving with no noticeable driving or performance problems, there is a permanent fault in the emission control system. When this happens, the computer that controls the emission system usually has a backup program that runs while the fault is present. (These backup programs are often referred to as "limp home" mode programs.) You should get the vehicle serviced as soon as possible, but in most cases, the vehicle will continue to operate, though you run a risk of it dying or not starting.

* The Check Engine Light illuminates, stays on, and there are performance problems.
This means that a vital component of your emission control and engine management system has a serious problem. It usually involves a component or system needed for the vehicle to run at all. In most cases, drive the vehicle as little as possible. In many cases, the vehicle is not safe to drive at all -it could stop or stall out at any moment. It is best to pull over to a safe place and have the vehicle towed to an automotive diagnostician for a thorough inspection and repair.

* The Check Engine Light light comes on and blinks in a steady pattern while driving.
Don't confuse this steady pulsing of the Check Engine Light light (usually one or more flashes per second) with a flicker (see above). The Check Engine Light may stay on steadily or it may flash when the vehicle is accelerated. This is very serious. There is a severe failure of the emission control system that is causing the engine to misfire to the point that the catalytic converter is damaged each time the Check Engine Light flashes. It may mean that the catalytic converter is overheating to the point that it will glow red or, in extreme cases, start a fire on the underside of the vehicle. Immediately pull over to a safe place and have your vehicle towed to an automotive diagnostician for repair. Vehicles can be severely damaged and even destroyed by fire if this condition is ignored for too long.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day

Aug 20, 2012 | 2008 Dodge Grand Caravan

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

2 Answers

I have a 200 Pontiac Montana and today it overheated into the red! Not sure why! I also don't have heat unless the RPMs are above 200. My fan don't kick on unless the air is on. 2 months ago I...


With the car running because it reduces the back pressure have someone that knows how to do it remove the cap from the radiator and see if the radiator is full, not the bottle but the radiator itself. If the antifreeze is not moving from the bottle to the radiator it will overheat. Not having heat unless you rev the engine makes me think the radiator is either not circulating the water or it is low.

Apr 24, 2017 | 2000 Pontiac Montana

1 Answer

Our temperature gauge goes from a blue light to a flashing red. after putting more coolant in, it seems to correct the issue for a little bit then it happens again. Why is this light going on?


The blue light is only supposed to indicate low engine temperature, reminding you to go easy on the engine until the light goes out.
The flashing is either for low coolant or for overheating, and it sounds like you are having a low coolant problem.
If after you add coolant the lights comes back, you have a coolant leak. The most common place for a leak is the coolant flange on the end of the cylinder head. If you take the engine cover off and look at the area where the transmission meets the engine, you should see either pink coolant puddling or pink crusty residue.
It's also possible to have other leaks from the radiator, heater core, water pump, etc. The nice thing is that with the pink coolant it will leave a trace of pink residue leading to the leak if you take a good look around with a flashlight.

Feb 17, 2011 | 1999 Volkswagen Beetle

3 Answers

93 grand cherokee 5.2 V8, red square flashing on VIC display


Your VIC doesn't provide you with codes per se, it supplies other information and what you describe here is what should be written on your VIC, "Coolant Sensor Bad." The actual Coolant Sensor runs to your PCM or computer and your check engine light will come on if it runs at or above 5 volts or below 0.1 volts. If the red square on the vehicle layout is illuminated under the hood area, it means that your Coolant Recovery jug is either low on anti-freeze or the sensor next to the yellow filler cap is faulty...meaning you're low on Coolant and the VIC says that the "Coolant Sensors Bad" yet it's the amount of fluid in the plastic bottle next to the passenger side firewall, right in front of your PCM or computer. If you're low on anti-freeze, keep an eye on it, or have the coolant system pressure tested...including the 18 pound cap on the radiator itself. Also check the two wires hooked to the Coolant LEVEL Sensor in the jug with an Ohmmeter and it should be an open circuit if the level is fine, or hardly any Resistance if the level is low, causing that circuit to complete it's ground circuit and thus signaling the VIC through your BCM to turn on. (Body Control Module). The Haynes Manual you will need is # 50025 which encompasses all Jeep Grand Cherokee's from 1993 thru 2004.

~Stillin~

Nov 05, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Check gauges light comes on


Sounds like a CPU problem. your radiator may need a good flushing a s well. i would also check the heater core for any unusual problems like seal break or leakage.

Feb 11, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Car running hot


There is a level /float sensor inside the tank.

Wait until the engine is cold,empty the coolant tank and rinse.

Refill will 100% coolant to the COLD / COOL / LOW mark.

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Sep 25, 2008 | 1997 Oldsmobile Aurora

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