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  #1 (permalink)  
Old 08 Jan 2011, 11:52 am
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Default Heating Issue

Recently had head gasket, water pump, thermostat, etc. replaced on my 2002 PT. Head was rebuilt & rings replaced.
Previously it was putting out usable heat within a few blocks. Now it takes a very long time (several miles) to get to temperature sufficient to heat the car.
Secondly, the engine now sounds like diesel - with what sounds like valve clatter at low RPM.
My mechanic says all is OK.
Any suggestions?
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Old 08 Jan 2011, 02:12 pm
Matt42's Avatar
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Join Date: Jun 2009
Location: Glendale, AZ
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Default Re: Heating Issue

Question 1. How well does it run otherwise?
Question 2. What does the engine temperature guage on the dashboard indicate? Normal? Low? High?
Question 3. Why did you have all that work done?
Question 4. What kind of antifreeze did the mechanic refill with? DexCool?

Guess 1. Mechanic does not do a lot of PT Cruisers.
Guess 2. Timing belt is not on correctly, and timing gears are not properly aligned.
Guess 4. May not be enough oil in the crankcase. Did you check?
Guess 5. Mechanic may not have bled air out of the cooling system. There is a bleeder screw just below the cap, above the thermostat.

If it was filled with Dex-Cool, it needs to be fully flushed out and refilled with HOAT type coolant. If not done, you will need a new radiator fairly soon, and may need to replace the water pump again, and maybe the head gasket again.
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Old 08 Jan 2011, 03:50 pm
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Default Re: Heating Issue

Agree X2!!!!
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Old 08 Jan 2011, 06:47 pm
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Thumbs up Re: Heating Issue

AGREE X3
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Old 10 Jan 2011, 11:28 am
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Default Re: Heating Issue

Thanks for the replies.
Runs great.
Engine temp guage takes way too long to come off "Cold".
Had work done because:
Engine overheated - replaced elec fan.
Engine overheated again - blew headgasket. Rebuilt head -replaced warped valves.
Engine ran poorly - rings had to be replaced.
Now it runs great, but takes forever to reach usable heat for cabin.
Oil level OK, not sure type of AF used.
Mechanic is very capable, he's done a lot of work for me on other cars - but still.....?
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Old 10 Jan 2011, 11:38 am
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Join Date: Sep 2010
Location: Winnsboro,SC
Posts: 2,706
Default Re: Heating Issue

I had a similar problem on my old GMC Jimmy.It would never heat up well enough to really heat the interior and the temperature guage always seemed too close to cold.It turned out being the thermostat stuck open.Dont know if this is your problem but it might be something to look into.
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