What might be the problem with my 2000 Grand Cherokee 4.7L if the temp starts to rise after 10 minutes of driving but not if the truck is in park yet the belt water pump fan clutch and thermostat-new?
The problem might be air. If an air bubble is trapped in the cooling system, coolant is not circulating as it should, since a portion of the closed system is occupied by that air. As a result, what should be a column of coolant is not reaching the coolant temperature sensor. What reaches that sensor instead is hot foam, which does not have the capacity to transmit heat to the sensing portion of the sensor as coolant does. WHAT REACHES THE DASH GAUGE, THEREFORE, IS NOT AN ACCURATE REPRESENTATION OF THE TRUE ENGINE TEMPERATURE. While at idle, the engine is not circulating coolant at the same rate as it circulates at road speeds; therefore, when the vehicle is traveling down the road, more coolant reaches the sensor, and a reading which more accurately depicts actual engine temperature is rendered at the gauge. This is a condition which is harmful to the engine, and is easily cured. It is harmful due to the fact that the air involved routinely finds its way to the uppermost regions of the engine--- most notably the cylinder head--- which heats excessively due to the lack of cooling. The result is a blown head gasket, or a warped head, or a cracked head or block, or any combination of these. At the most severe point, this can lead to the need to replace the engine. It is easily cured through the process of burping and bleeding the cooling system. This involves topping off the coolant on a cold engine, opening a line leading to the heater core, letting the air out of the line, reattaching the line, and starting the engine with the radiator cap removed. The engine should be run until the thermostat begins to open, at which point the cooling system will begin the exchange of coolant between the engine and the radiator. NOTE: THE COOLANT ARRIVING FROM THE ENGINE IS HOT, AND CAN SCALD. CARE SHOULD BE TAKEN TO STAND BY WITH THE CAP TO THE RADIATOR IN ORDER TO INSTALL IT BACK ONTO THE RADIATOR SHOULD THE FLOW BECOME UNMANAGEABLE. THE OBJECT IS TO ALLOW AIR OUT OF THE SYSTEM WHILE THE SYSTEM IS TOTALLY OPEN AND CIRCULATING, AND THIS IS ACCOMPLISHED WHEN THE THERMOSTAT IS OPEN AND THE ENGINE IS RUNNING WITH THE CAP REMOVED FROM THE RADIATOR. Once coolant begins to be drawn from the radiator into the engine by the water pump, the level in the radiator will drop. IT IS AT THIS POINT THAT COOLANT IS ADDED TO THE RADIATOR AND THE THROTTLE IS OPENED WIDER(ACCELERATING THE ENGINE TO A HIGHER RPM) TO FORCE AIR OUT AS IT IS FORCIBLY DISPLACED BY THE TURBULENCE OF INRUSHING COOLANT. Once the radiator level peaks and will hold no more, the cap is installed, and the throttle is allowed to return to its normal position. The next step is to turn the heater on HIGH HEAT, with the fan running, and cycle the accelerator through a repetition of high-low RPM pulses to displace the last bits of air toward the radiator. When full heat is experienced through the heater, the engine is shut down and allowed to "heat soak" until cool. Once cool, the radiator cap is again removed, and the radiator is topped-off. The cap is then replaced. Topping off the recovery tank and replacing its cap completes the process. The cooling system has now been burped and bled, ensuring a solid column of coolant in toto. Happy Motoring...
Hello you have a 98 grand Cherokee with 184000 miles your problem is that after about 20 minutes of driving the jeep will start to hesitate and act like it is cutting out when you push down on the acc?
Disconnect the battery cable for about 10 minutes and the light will be reset. If it comes on again after driving, it's a recurring problem and you can get the codes read and hopefully fix the problem. Disconnect the battery cable for about 10 minutes and the light will be reset. If it comes on again after driving, it's a recurring problem and you can get the codes read and hopefully fix the problem.
i have a 99 Cherokee sport, had the same problem, found it to be a sensor that lets the tranny know how fast the motors spinning vise versa. replace didnt have a problem since. also u might find that the car will want to shutdown while driving i have always had it start right back up. anyways that's what i experienced an hopefully it was helpful
94 grand Cherokee shuts down while driving blow engine control fuse in pcm after fuse blows jeep will crank but not start?
Why does your 98 jeep Cherokee idle rough after 3 minutes of running and after another 3 minutes idles ok?
I Currently own a 1996 Jeep Grand Cherokee Laredo and it has or had the same problem... What i Did was find the computer and messed with the cables a bit. The truck turned rite on. The problem is that in order to keep it running i put tape going around the computer and cables... it works as if they were just loose or something... i don't know what the name for the cables is…
What could the problem be with a 1997 jeep Cherokee sport when driven for a while it will die and then start again in about 30 minutes?
If this is a recent problem then it may be stuck wheel clinders / calipers , causing the brakes to overhaet or a brake pressure problem. if you have a abs system on your car then it will have to be taken in for serive if it involves the abs system. iIf you just installed brakes then try bleeding and adjusting your brakes, if they have an adjustment.
A 1994 Jeep Grand Cherokee Laredo drives fine then starts to bog down. If you pull over and start again after 3-5 minutes it runs fine again. What could be happening?
You can reset it by unhooking the battery for 5 minutes. it will just come back on if you do not repair the problem that caused it to come on in the first place. Will it come on immediatly? Or will it take a bit of driving? It may come on very quickly or may take a few driving cycles, hard to say. If it comes back on then there is a problem with the…
What causes a 1997 Grand marque to stop while driving and starts back up a few minutes later doing his several times?
1997 Grand Cherokee electrical problem Someimtes will not start. While driving battery indicator will max out check gauges light will come on for about 25 secs then goes back to normal?
What causes a 1998 suburban to turn off while driving happening intermittently usually after 20 minutes of driving?
If you do not repair the problem that caused the light to come on then it will never go off. If you repair the problem then remove the negative battery cable for 10 minutes and the light may go off. If it comes back on you did not repair the problem. If the light does not reset then the light will have to be reset with a OBD2 scan tool.
The easiest way to reset the 'perform service light' on a 2003 Jeep Cherokee is to disconnect the battery for a few minutes. If this does not fix the problem, try turning the key on, but do not start the vehicle. Pump the throttle 3 times and turn the key off. Then start the vehicle. If the light is still on after that, there might still be something wrong with the vehicle.