Cost to replace and repair heater core in 99 Grand Marquis

Here's a link on replacing your heater core. GET 25 GIFT CARD FOR EVERY 100 SPENT ON ONLINE SHIP TO HOME ORDERS Here's a new heater core. http://www.autozone.com/cooling-heating-and-climate-control/heater-core/spectra-premium-heater-core/mercury/grand-marquis/1977/8-cylinders-a-7-5l-4bl-ohv/491780_0_0

Are the cooling fans coming on?

What they mean is the water coolant hoses connected to the inlet manifold these will need to be removed as part of the job l can`t fore see any major problems it`s pretty striaght foward..

YES AND THEY CRACK AND LEAK,THEIR ABOUT 280 AT PARTS STORE.

The Grand Marquis's have a know problem that causing overheating. The intake manifold cracks around the water inlet tubes on the intake manifold causing it to loose anti-freeze which in turn causes overheating. Mercury has a beefed up replacement intake manifold that cures the problem. It was a subject of an unannounced recall but they would replace it unless the problem occurs. The recall was for 7 years which the 1999 model wouldn't qualify for now. It happened to me and cost about $450.00 (parts and labor) to fix it. I used a local repair shop to do the work. If, after the engine is hot, you hear water/steam coming from the top of the manifold, you have the problem

could be heater control or plugged heater core.. heater core could be cleaned out by unhooking heater hoses and running water through or a radiator flush.. if its your valve youll need to replace..

It's time consuming. you have to drop the whole dashboard and steering colum in order to get to the heater core. In a scale of 1-10 with 10 being the hardest, i say it's an 8.

A cracked Intake manifold. Check the manifold in two places, on the front cross over behind the alternator and the base of the heater hose connector on the rear of the passenger side.

check the antifreeze level in the rediator.

yes, that price is correct , that is a very common problem on those engines, the intake cracks and warps. that sounds like a good diagnosis and a good price for the repair