SOURCE: heater prb 2004 sebring
I would look or have someone check out what temperature of thermotat you have in yourcar, if it is a low temp one this could explain the low heat.
SOURCE: 2000 chrysler sebring conv
this is the diagnostic procedure for your problem. (this is actually from a 3.0L engine but the procedure is exactly the same for the 2.5L)
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SOURCE: Crankshaft Position Sensor location 04 PT Cruiser
It is located behind the **** of the starter on the front of the engine starting in '03 the 2.4 lt was changes the repair manual failed to update this..you may sneak it out with small fingers with out pulling out the starter.
SOURCE: code p1684 2002 chrysler
Check,tighten & clean all battery connections & Have your battery tested.Load tested. Usually a weak, or defective battery will cause this code to come up also. While they're at it, have them test charging system. My guess is autozone will check it free or cheap, if you buy the new battery there if required. Have you noticed it turning over maybe a little slower when starting occassionally?
SOURCE: camshaft position sensor
This V-6 has a very hard to find/hard to reach CKP - it is directly under the Distributor, about 4 inches below, inwards toward the Transaxle "bell". Almost dead-center in the back of the engine.
Your going to have to take the Air Filter and the air manifold that runs to the engine off. After that, take off the horn assembly to gain very, very limited access to wedge an extended ratchet into the bowels of the engine.
I think the same socket that undid the horn assembly fit the CKP nut. It takes 10 minutes to undo the bolt a couple ratchet clicks at a time, at least 15 to get the thing to wiggle out, probably 15 minutes to unconnect, reconnect, and snap back to the fram the wire harness, and at least another 10 minutes to ratchet the bolt back in click by click.
Now you know why they say shops charge $500 in to do this - I think they must take the entire engine out... Very painstaking job that requires patience and precision... but quite satisfying to finish it yourself.
Good luck and hope this helps,
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