I had my cooling fan replaced because it was not coming on and car would sometimes run hot. I thought it would fix it from blowing cold but it did not but will get warm then go back to cold. tRue temp was low then normal to high then back low. What is the problem?

SOURCE: 2001 pt cruiser no heat

did you check the fluid level by removing the rad. cap? Radiator should be full to top. If Chryslers are low on coolant, the heater will not blow warm air.

SOURCE: Hard start when cold, running rich, poor fuel economy

Chrysler has a bulletin out for a simular condititon that involves replacing the pcm. Heres the bulletin number 18-005-04. This is only 1 possible cause , Fuel pressure, coolant temp sensor, thottle position sensor all can cause like problems. Seeing sensor values and fuel adaptives with a scan tool helps pin point problems.

SOURCE: CHRYSLER TOWN & COUNTRY 2003 HEATER PROBLEM

Have you checked the coolant level? If it's low, it will result in diminished heat, and could be the problem.

SOURCE: P0480 error code: I have a 2007 Chrysler Town

It is located under the hood between the radiator and the front grill. You will have to remove the platic cover between the radiator and grill to see it.

Testimonial: "I looked and found it. When I saw what it looked like, I went to the local parts store and purchased one. Installed it, reset the codes and it worked."

SOURCE: overheating

Ok, here is what I have found with the overheating problem with my 2002 PT Cruiser. I have got all the symptoms that everyone else has gotten form, it heats then cools down, gets hot when it idles, gets hot when AC is turned on. The bottom line here is that it gets hot when it is not going down the road or it may raise a little then go back to normal. This is what I have found after a new water pump, radiator, thermostat, cooling fan. What is happening is that the engine or radiator are starting to collect what I like to call calcium particles. so when the particles break loose they circulate around in the cooling system, when the radiator cap opens to let water out to the recory bottle these particles go out with it, however when the cap closes and tries to seal the radiator back up the particles get stuck under the seal therefor the radiator never pressurizes and continues to let water out filling up the recovery bottlle and then boiling over. I have proved this theory several times (and you can too) by letting the car cool down after a overheating tantrum and removing the radiator cap. Look at the rubber seal and i will bet you find these calcium particles built up on it not letting the cap reseal. I have cleaned the cap and put it back on and driven sometimes 2-3 days without a problem. The reason the temp will go up and down at times is because it deoends on whether or no the coolant has washed all the particles away when it opens and closes. Do a heavy duty and thorough cleaning of the cooling system making sure to get these particles out and you should be fine.