Watch and protect carpeting from coolant leaks. Disconnect the programmer vacuum and electrical connectors. Remove relay panel from module assembly, then the module assembly heater core cover. Cadillac is a prestigious producer of first class, precision engineered machine that feature fast driving capabilities and majestic drive feel. Instrument cluster removal may not be necessary for this job. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air.
Jul 07, 2011 Feel the 2 tubes at the firewall for the heater core. Install the right sound insulator. Disconnect the driver air mix actuator 2. Thank you for using FixYa! Disconnect the heater core hoses using tool J-37097 or an equivalent. Verify that the programmer arm and the air mix valve travel to the maximum cold position.
Posted on Aug 28, 2008 the heater core in a 1998 Cadillac is very tricky to replace. Remove the left knee bolster support. Disconnect the negative … battery cable. Posted on Aug 02, 2010 is your car running at normal temperatures? I used an small ignition wrench to remove the screws. Check our article section for step-by-step. I'm not saying that the cores are dimensionally different, but the fins that make up the water passages, being in a zigzag pattern, are invariably in a slightly offset position, requiring that the sealant be displaced in a different pattern. Remove two heater core attaching screws, then the heater core.
Mark all hoses and connections with etih … er numbered tape or color coded so you know what goes where when putting the core back in. Remove the right side sound insulator and the glove box module. Remove control cables at control assembly on instrument panel. If not purchase a new one period. This will prove fatal in sufficient quantity. Connect the programmer vacuum and electrical connectors. The manual will also list all the special tools you'll need.
On my car this step took the longest of any single step in the entire job. Remove the glove compartment and insulating panel. Be sure and set the heat to high when pouring in the fresh coolant. Remove the windshield pillar trim. Verify that the programmer arm and the air mix valve travel to the maximum cold position. This is especially important these days with the astronomical prices of R12 and R12 system service. This will allow enough freedom to get the evaporator case away from the firewall about one inch.
I can however tell you that you will have to remove enough of the dash to allow access to the core. Disconnet the heater hoses at the firewall. . If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. Disconnect the steering column shaft from the steering column.
So I began to attack the heater core project just like everyone had recommended, including removing the entire dashboard, and discharging the air conditioning system to remove the evaporator case from the firewall. You can expect a new, factory installed not dealer! Follow the Chilton diagrams and the last trick is to make sure there is no air on the system which will cause bad heating from the heater and possible damage to the cooling system. Disconnect threaded rod from programmer. While going through our website, you can find information on the heater core set inside your engine and thereby, get a clearer picture of how it works. Each core only lasting somewhere between six weeks to a year. Unless of course, you enjoy this job and want to do it again.
Adjust the air mix valve. Sadly enough, this was not the end of the story. I cut the core out of the loop by disconnecting the hoses and joining them. Remove glove box attaching screws, then the glove box. Disconnect the Steering column to body connectors. This Heater Core is built using only high quality materials and above the standards components available in the market today.
If they are not getting hot, the heater core needs to be flushed out or replaced. To install: Position the heater core and secure with the retaining screws. A properly functioning Heater Core will keep the vehicle cabin warm; which in certain climates is essential to driver and passenger comfort. Take care not to damage the new cores cooling fins as you install the new core. Remove relay panel from module assembly, then the module assembly heater core cover. These reviews are from anyone who purchased those parts, in this case a Heater Core, so you can feel confident that you know what you are buying.
Personally I don't care if mine works or not. Remember to install sealant after flushing out the system to prevent leaks. By far, the most difficult task of the entire job is getting the new core's tubes lined up with the gasket and holes in the firewall. Remove lower sound insulator attaching screws and nuts, then the lower sound insulator. Tighten Tighten the screws to 2 Nm 18 lb in. I had this problem with a 1990 Cadilac Deville, it was just a plugged up heater core.