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Runs rough when car is warmed up

Tiny
TRENT OZON
  • MEMBER
  • 2009 DODGE CALIBER
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Hey, i'm having problem with my car only running rough when warmed up. If I turn on the heat it will run rough rpm's will drop a little and go back same if I turn the wheel or do windows up or down. When I drive it runs great only happens when in park or at a light in drive. Here is a list of things I changed on the car: alternator, spark plugs, coils, battery, got the timing chain and timing done, cleaned the 02 sensors, cleaned the throttle body, new MAF sensor, new crankshaft and camshaft sensors, new valve gasket, checked all the wiring and grounds, changed the oil and filter, changed cabin and air filter, no codes are showing at all, changed PCV valve, checked for vacuum leaks. I think that's all I did. Been trying to find this problem for months no luck. If anyone can help would be great. Thanks
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Friday, November 22nd, 2019 AT 11:38 AM

6 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Hello,

I have seen the engine coolant temperature reading be off when hot causing this issue. here is the location so you can check it out. There are 2 sensors.

Also this guide can help:

https://www.2carpros.com/articles/engine-vibration-at-idle

Can you please shoot a quick video with your phone so we can see what's going on? that would be great. You can upload it here with your response. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Tuesday, November 26th, 2019 AT 1:28 PM
Tiny
TRENT OZON
  • MEMBER
  • 4 POSTS
Thanks for the reply sorry it took so long I was sick I will do a video tonight. Thanks again.
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Tuesday, December 3rd, 2019 AT 2:59 PM
Tiny
TRENT OZON
  • MEMBER
  • 4 POSTS
Here is a video when the car is cold and hot also the readings of the car in part of the video of me saying this is what happens when I turn the wheel or do the windows and sit what I mean by sit is it will out of the blue run really rough for a second like wanting to stall and then go back to running a little rough I changed only one coolant sensor so far and nothing i'm hoping the readings in the video will tell you something about whats going on the sound in the back ground is a fan in my underground parking lot it don't blow any smoke at all from the tail pipe I picked apart the inside looking t all the wires and all look good I really cant find the problem i'm lost.
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Tuesday, December 3rd, 2019 AT 9:41 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Great video btw. This can be caused by bad or incorrect ignition system components I would replace the spark plugs, wires and coil with OEM parts only. Please do the work and get back to me.

This guide should help:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Please run down this guide and report back.

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Wednesday, December 4th, 2019 AT 12:48 PM
Tiny
TRENT OZON
  • MEMBER
  • 4 POSTS
It has been done timing, spark plugs, coils, pcv valve, camshaft crankshaft sensors, battery, alternator, etc.
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Wednesday, December 4th, 2019 AT 5:50 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Yes, but are they OEM. after market stuff doesn't work as well in some cases especially the plug wires. The engine does seem to get louder when warm but does it misfire? Do we have a check engine light on? I would change the oil to a thinker weight name brand oil as well. 20/50 perhaps.

Let run the codes. here are two guides to help us:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/how-to-change-engine-oil-and-filter

Please run down these guides and report back.
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Thursday, December 5th, 2019 AT 10:48 AM

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