2005 Jeep Liberty is blowing only cold air from heater and occasionally the engine runs too hot. I put coolant in.
About two months ago, I noticed the heat would only work if I was driving fast on the
highway and would quit working in the city. No biggie cause I live in the south, but
now it is freezing and even on highway the heater only blows cold, but every once in
awhile the engine temp gauge will spike to overheating. Never smells like it is
overheating and will often go right back down within a minute or two. I am very handy
and would prefer to fix this myself. I just don't know where to start. I changed out the
cylinders and plugs on same vehicle, so I am certain unless it involves disassembling
the whole damn engine, I can handle it.
