PT Cruiser Forum  
Advertisements
       

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

PT Cruiser Forum

Advertisements
still having an engine hesitation...please help.

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 25 Nov 2007, 01:20 pm
Fresh Cruiser
 
Join Date: Sep 2007
Posts: 24
Default still having an engine hesitation...please help.

I have been having that engine hesitation for a while now. It only happens when the A/C is on. Its while stopped or when i just start to roll. I have changed the wires to crane firwire and plugs to champion double platnium without any help. I have read about the fan motor siezing, could that be the issue? How would i check it? I watched the engine idle for a while today and with the a/c on it does this cycle about every 20 to 30 sec like something keeps turing on and off. I never saw the fan turn on the whole time i watched it. But i can manually turn the fan so its not frozen in place or anything. Please help, i am so tired of this problem.
Reply With Quote
  #2 (permalink)  
Old 25 Nov 2007, 05:03 pm
quicksilverdon's Avatar
Obsessed Cruiser
 
Join Date: Nov 2003
Location: Felton, Delaware
Posts: 20,501
Default Re: still having an engine hesitation...please help.

Fan is supposed to come on whenever A/C is on. If you can turn it on manually (I guess you mean by jumping it) then one of 2 things - switch to turn fan on w.A/C is bad, or one of the 2 speeds of the fan is bad.
Your hesitation, tho, might be the Idle Air Control (IAC) it's supposed to up the idle when A/C comes on.
Do a search on IAC.
__________________
"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
  #3 (permalink)  
Old 25 Nov 2007, 05:45 pm
Fresh Cruiser
 
Join Date: Sep 2007
Posts: 24
Default Re: still having an engine hesitation...please help.

I am sorry, i didnt mean that i actually jumped the fan, i meant that i can spin it with my hand. The fan i am refering to is the fan on the engine side of the radiator. Is that the right one? Also when the engine hesitates, the a/c blow warm for a minute.
Reply With Quote
  #4 (permalink)  
Old 25 Nov 2007, 07:52 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,744
Default Re: still having an engine hesitation...please help.

As QSD pointed out, when the A/C is ON, the fan should be running. If not, your low speed part of the motor is probably burnt out. You can't buy part of the fan so the motor and whole fan shroud must be replaced. If the fan is burnt, the water temperature needle should start to rise above half way, other wise the needle should stay at half or just below half all the time and yes, the fan is on the inside of the radiator, it's the only fan there is.

The compressor starting and shutting off about every 30 seconds is about right when the air is on the coldest setting.

All this should have nothing to do with your hesitation at idle (unless your running hot) and I'd hate to think you lost your fan and having trouble with the IAC (Idle Air Controller) at the same time, but you could. Everytime the compressor comes on, the idle should raise a little to compensate for the drain on the engine. The IAC does this. If not your idle could drop down to where it will shutter and shake and almost stall.


IAC position
__________________
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
  #5 (permalink)  
Old 25 Nov 2007, 09:46 pm
Fresh Cruiser
 
Join Date: Sep 2007
Posts: 24
Default Re: still having an engine hesitation...please help.

Okay talked to the misses and she says that the idle is normally at about 1000rpms and that when the car shutters that the idle drops to about 500rpms. Okay now about the IAC. When we got this car it was used with about 12000 miles on it. I noticed the first time that i changed the oil that a wire in the same location that you pointed out is about half way cut through. Its very close to the plug. Could that be the problem? If so is that plug fixable? Its to close to use a wire connector.
Reply With Quote
  #6 (permalink)  
Old 25 Nov 2007, 10:44 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,744
Default Re: still having an engine hesitation...please help.

Just guessing, but yes that could make the IAC inoperable. Is the plug fixable? Your the one that's saying the bad part is too short/close to the IAC to make a connector, so you might end up buying that part of the wire but not the IAC itself. See if you can trace the wire back to see where it's connected/comes from and see if your dealer can order you a new one.
__________________
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
Stalling, rough idle, running "hard", hesitation LiLOrion Tech & Performance Forum 36 21 May 2013 12:43 pm
"Mysterious" turbo engine noise...??? Gary04GT Turbo Performance 76 21 Aug 2006 08:28 am
Review: $2200 for a NA replacement engine PT Ctown General PT Cruiser Discussions 8 24 Jul 2006 01:08 pm
Emission sensor on, engine hesitation higear4 General PT Cruiser Discussions 6 25 Jan 2006 07:09 pm
Turbo Engine Replacement Bigphil3232 General Turbo Discussions 9 17 Nov 2004 05:43 am


All times are GMT -5. The time now is 04:24 pm.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors