PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > General Forums > Tech & Performance Forum

PT Cruiser Forum

Advertisements
Mysterious overheating.

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 31 Jan 2015, 12:35 pm
Fresh Cruiser
 
Join Date: Jan 2015
Posts: 2
Question Mysterious overheating.

2001 PT Cruiser 2.4L has been starting to overheat. When I have idling the temperature gauge starts to rise. This is where it gets odd. If I have the fan set to anything on the heat side the temperature gauge keeps rising. But if I switch it over to the air conditioning side the temperature gauge will show that the engine is now cooling off and running at a normal temp but sometimes even then my temp gauge will go about 3/4 before it starts to cool down. Also sometimes (it's been pretty sporadic) my blower will seem like it's not pushing out the normal amount of air but when I shut the car off and wait an hour or so it's fine again. The thermostat has been replaced and I hit a raccoon last year and had to replace my radiator. I have no clue what could cause it to be doing the rest of this.
Reply With Quote
  #2 (permalink)  
Old 31 Jan 2015, 03:43 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,750
Default Re: Mysterious overheating.

Sounds like you may have two problems. One of the fan speeds may be burnt out (common problem) and the Low Pressure Switch, also known as the Recycling Switch (located on top of the accumulator) may be bad (not so common problem).
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
  #3 (permalink)  
Old 31 Jan 2015, 03:46 pm
Regular Cruiser
 
Join Date: Feb 2013
Location: Texas
Posts: 150
Default Re: Mysterious overheating.

When the engine is COLD, take the radiator cap off the thermostat housing and make sure it's filled to the top. It may be a good idea to pressure test the cooling system to check for leaks. Also, check to make sure the radiator cooling fans are operating at both speeds.
__________________
2008 PT Cruiser Touring 135,000 miles
Reply With Quote
  #4 (permalink)  
Old 31 Jan 2015, 06:41 pm
Fresh Cruiser
 
Join Date: Jan 2015
Posts: 2
Default Re: Mysterious overheating.

I've been trying to search for a low pressure switch with no luck. Any clues? Or will I have to go to a dealer :/
Reply With Quote
  #5 (permalink)  
Old 31 Jan 2015, 06:48 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,750
Default Re: Mysterious overheating.

Shouldn't be hard to find. Chrysler part No.#5016-417AA Switch Kit. A/C Cycling.

__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
  #6 (permalink)  
Old 31 Jan 2015, 07:08 pm
quicksilverdon's Avatar
Obsessed Cruiser
 
Join Date: Nov 2003
Location: Felton, Delaware
Posts: 20,501
Default Re: Mysterious overheating.

Your overheating problem is because your low speed on engine fan doesn't work - turning on A/C causes the high speed on fan to come on, which cools off engine.
Don't know about your airflow issue.
__________________
"Anti-intellectualism has been a constant thread winding its way through our political and cultural life,
nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge."
Isaac Asimov"

'05 Limited Turbo Lite, (Silver, of course)4-wheel ABS, Sunroof, Spoiler. Mods: E&G Classic grill, K&N FIPK, BTG duals, rear lowered 1.5", LED washer lights, $20 catch can, Aoogah horn, Weatherflectors, Sunroof Deflector, Fuzzy Dice, rear logo flames, rear pinstripe graphic, Gen3 Taillights, rear sway bar, hood struts, Strut bar.
Traded in '02 Silver Touring Edition w/87,000 miles
Reply With Quote
  #7 (permalink)  
Old 31 Jan 2015, 07:38 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,750
Default Re: Mysterious overheating.

That air flow problem is something I had and it was traced down to the Recycling switch so that's way I mentioned it as a probably cause.
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
2001 PT mysterious cruise control JDeProniio General PT Cruiser Discussions 2 28 Jul 2014 10:36 pm
A foul & mysterious odor.. PawsToDream Tech & Performance Forum 11 07 Jun 2014 01:26 pm
Mysterious Rattling Noise Gone Hoosier Tech & Performance Forum 16 25 Aug 2013 08:09 pm
"Mysterious" turbo engine noise...??? Gary04GT Turbo Performance 76 21 Aug 2006 08:28 am
update on that mysterious rear knocking noise Ctown General PT Cruiser Discussions 6 25 Apr 2006 09:55 am


All times are GMT -5. The time now is 01:46 am.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors