96 Jeep Grand Cherokee Laredo

heatrock · 08-01-2007, 08:14 AM

I just had a new waterpump, temp. sensor, heater core, thermostat, and a/c and heater switch put in my jeep. Less than 24 hrs. I drove about 30 miles and stopped to fill up and it was leaking antifreeze and steaming. I got home and found the upper hose was bad going to heater core. Now I have a low coolant light, bad coolant sensor and the heat is not working but the a/c does? Can anyone please help? Thanks

**qldit** · 08-01-2007, 10:33 PM

Good Afternoon heatrock, it is common for Jeeps to have coolant problems often due to being incorrectly filled.
What happens is that although the vehicle may appear to be full, in fact there are areas and internal air pockets that need to be addressed.

I am not familiar with that particular machine, some vehicles have a bleed screw in the area of the thermostat to address this problem but you will need to find out for your particular vehicle, some jeepsters refer to it as "burping" to get them to fill properly.

Generally if the heater is turned on and the engine running with the radiator cap removed it can sometimes be ovecome, and more fluid added progressively when the thermostat opens but can be messy and needs absolute care.
Internal air pockets locally heating may cause back "gushing" so be careful, holding the engine at a stiff idle and not altering that speed helps get the coolant flowing, but throttling back may cause sudden overflow if the cap is not fitted.

Someone will know the proper filling procedure, this is just a general method I found works with most machines.

Ensure the level is correct for several days when the system has cooled, if you have a header tank ensure the engine radiator system remains full for at least a week to ensure the cap is functioning properly.

I am not sure how to reset your lights but disconecting the battery for several minutes may clear them.

Cheers, qldit.

08-01-2007, 08:14 AM	#1 (permalink)
heatrock Registered User Join Date: Aug 2007 Posts: 1 OS: xp	96 Jeep Grand Cherokee Laredo I just had a new waterpump, temp. sensor, heater core, thermostat, and a/c and heater switch put in my jeep. Less than 24 hrs. I drove about 30 miles and stopped to fill up and it was leaking antifreeze and steaming. I got home and found the upper hose was bad going to heater core. Now I have a low coolant light, bad coolant sensor and the heat is not working but the a/c does? Can anyone please help? Thanks Last edited by Midnight Tech; 08-01-2007 at 05:42 PM. Reason: Removal of pic...

08-01-2007, 10:33 PM	#2 (permalink)
qldit TSF Gearhead Join Date: Mar 2007 Location: Brisbane Australia. Posts: 592 OS: All Systems, mainly Linux	Re: 96 Jeep Grand Cherokee Laredo Good Afternoon heatrock, it is common for Jeeps to have coolant problems often due to being incorrectly filled. What happens is that although the vehicle may appear to be full, in fact there are areas and internal air pockets that need to be addressed. I am not familiar with that particular machine, some vehicles have a bleed screw in the area of the thermostat to address this problem but you will need to find out for your particular vehicle, some jeepsters refer to it as "burping" to get them to fill properly. Generally if the heater is turned on and the engine running with the radiator cap removed it can sometimes be ovecome, and more fluid added progressively when the thermostat opens but can be messy and needs absolute care. Internal air pockets locally heating may cause back "gushing" so be careful, holding the engine at a stiff idle and not altering that speed helps get the coolant flowing, but throttling back may cause sudden overflow if the cap is not fitted. Someone will know the proper filling procedure, this is just a general method I found works with most machines. Ensure the level is correct for several days when the system has cooled, if you have a header tank ensure the engine radiator system remains full for at least a week to ensure the cap is functioning properly. I am not sure how to reset your lights but disconecting the battery for several minutes may clear them. Cheers, qldit.