My 98 Tauras had no heat or a/c and temp gauge acting erradict. First thing I found was cracked coolant resevoir tank, replaced and found coolant to be muddy brown so I did a total system flush and hoped the problem was fixed, NOT

, then I replaced thermostat and not a fix either.

,i was not happy. Well then I thought, screw it, I am going to change the water pump,cant hurt, after I found out it was only about $30

, I gave it a shot, not to bad of a job, a little time consuming but hopefully worth it. Well I was pleased to find that the pump was shot, fins that circulate coolant were gone and all that was left on the pump shaft was like a flat sharp disk

. Fins totally erroded away. That explains why for a month or so that my temp gauge was erradict, fins were slowly rotting away. Got everything back together and now I had plenty of a/c, boy was I happy

. Now winter comes and find that my heat aint too HOT !

. Now what I thought

, figured, hell, I will bring to a Lube shop and have the coolant system flushed, maybe they would find a blockage or air in system, they use a high pressure backflush, any heat would be better than none. Well they tell me sorry

, still no heat. their suggestion was to make an appointment and they could drop the dash and check the air/flow doors. My first thought was....expensive. Told them I'll wait. Went home and looked under the dash and not too hard to see the doors working,

w/out taking the dash down. looked to be OK. Next day as a last resort, I looked at this forum and read about flushing the heater core, thought that would have been done at the lube place, I felt the lines going into the heater core, easy to reach and lines are steel so you can feel if the influent and effluent lines are both hot. In line was cold and out line was hot, well then I guess I will flush the heater core myself. Where I work we have a hot water hose so I flushed the heater core, both in side and out side, put all back together and to my suprise, HEAT !! Now I am HAPPY

!! So I suggest if your Temp. gauge is acting funny, a/c not cold, heat not HOT, go for it, replace the water pump. They are known to errode early, so I'm told....