Crankshaft position sensor?

Tiny
DAVID AQUALEASE
  • MEMBER
  • 2008 CHRYSLER TOWN AND COUNTRY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 117,000 MILES
I have an intermittent starting problem. After a drive and a short stop, the van will sometimes not run. If the drive is very short, less than 15 minutes, there is no problem. If the stop is very short, less than 10 minutes (approximate) there is no problem. If the stop is more than 45 minutes (approximate) there is no problem. When it is not starting, if I wait for 15 to 45 minutes, the van will start. When it is not starting, if I set the ignition to the on position, I can hear the fuel pump run and then stop. When I switch to start, the van gives an initial start and immediately dies. It doesn't seem to matter what I do with the throttle, it just will not run. Any ideas on what might be causing the problem?
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Sunday, August 7th, 2011 AT 11:00 PM

35 Replies

Tiny
DOCFIXIT
  • EXPERT
Hi checking for spark will tell which direction to proceed. It sounds like the crankshaft sensor.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Check out the diagrams (Below). Please let us know what happens.
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Friday, August 12th, 2011 AT 3:54 PM
Tiny
RASMATAZ
  • EXPERT
If I then turn the ignition switch to start, the van starts and then immediately dies. Concerns me-sounds like the ignition switch ignition circuit on it is open-Have the ignition switch tested could be heating up and breaking open-Let us know
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Friday, August 12th, 2011 AT 4:35 PM
Tiny
DAVID AQUALEASE
  • MEMBER
If you can tell me how to check for spark without having to remove the intake manifold I will do it next time it happens. The check engine light does not come on. I have been watching the dash and I have not noticed any other problem. When the van does start, it runs fine and smooth. It might be a heat related problem, but I'm not sure. What do you mean by testing the ignition switch? Do you mean the dash switch, the key fob, or something under the hood?
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Saturday, August 20th, 2011 AT 2:04 PM
Tiny
DAVID AQUALEASE
  • MEMBER
Today was very warm out and I had a problem starting twice. I took it to my mechanic and it finally did not start for him as well. He went to check the fuel pressure and when he disconnected the fuel line he said it was like cutting the end of a hose off of an air compressor. He got a sudden and violent release of fuel vapour. He checked the fuel pump and it was working properly and when he reconnected the fuel line, the van started properly. Our thought is it is vapour locking. We are not sure why it is vapour locking. Anyone have any thoughts?
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Monday, August 22nd, 2011 AT 11:19 PM
Tiny
DAVID AQUALEASE
  • MEMBER
Today we checked the fuel line from the gas tank to the engine and could not find anything amiss. No fuel leaks, etc. The only conclusion we can come up with is that there is a problem with the crankset senor so Installed a new unit have not had the issue since thank you.
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Wednesday, August 24th, 2011 AT 12:40 AM
Tiny
RASMATAZ
  • EXPERT
Nice work, we are here to help, please use 2CarPros anytime.
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Wednesday, August 24th, 2011 AT 8:55 PM
Tiny
JE3.8T&C
  • MEMBER
  • 2005 CHRYSLER TOWN AND COUNTRY
  • 35,500 MILES
I have my van opened up right now and having a hard time locating the crankshaft position sensor to replace it. Possibly have any photos or diagrams to help? Or GPS directions.
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Sunday, December 13th, 2020 AT 10:10 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
It is located on the transmission bell housing below the exhaust cross over pipe.

See the diagram below for location.
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Sunday, December 13th, 2020 AT 10:10 AM (Merged)
Tiny
JE3.8T&C
  • MEMBER
Thanks for the information. I did some intensive searching with my digital camera and found it tucked in that uncomfortable position under the exhaust.

I am trying to solve a mystery though. It continues to smell like it is flooded after several seconds of trying to start. On occasion it will start right up, but mostly it winds several times before starting.

I have changed the o2 sensors, the EGR, the crank shaft sensor, put in new spark plugs and still no resolve. Any ideas or thoughts would be appreciated.
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Sunday, December 13th, 2020 AT 10:10 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
If you are sure it is flooding, check the temp sensor. This sensor tells the computer how rich or lean to make the fuel mixture based on ambient temp and coolant temp. If it is telling the computer it is -40 degrees, the computer will tell the injectors to dump fuel to the engine.

By the way, isn't the crank sensor fun to get to (lol).
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Sunday, December 13th, 2020 AT 10:10 AM (Merged)
Tiny
JE3.8T&C
  • MEMBER
I did not know my arm could bend in so many directions. I decided to take out the battery and swung the battery tray toward the hood so that I had more elbow room.

I will look into the temperature sensor. Each time you start the engine and it has to "wind" up before starting, immediately after it smells like excess gasoline. When I was under the hood yesterday, I took the air filter box off so I could find the camshaft sensor and the same odor drifted out of the air intake.

Thanks for your help. I cannot tell you how much it is appreciated. I bought this van thinking it was a good deal, but I have ended up with a lot of work instead. Hopefully as I knock each one off, it will become a better vehicle!

Jeff
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Sunday, December 13th, 2020 AT 10:10 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Jeff,

I am glad to help. Do not worry. You will get it fixed. Then you will know that you have a good vehicle. Let me know if you have other questions. That is why we are here.

Joe
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JE3.8T&C
  • MEMBER
I do have one major issue I am trying to solve. I realize that it could be several different things. Ideas are helpful though.

We have always had a fill up issue. We can only put about 1 to 1-1/2 gallons of fuel at a time before the neck fills up and shuts off the pump. It seems to be getting worse. It has been mentioned that there is a "burp" valve on the burp tube up next to the top of the filler neck. They said that if I can get to that and clean it out with carburetor cleaner that it should be okay then.

I have read online where there is a splash back issue with these vans and other related Chrysler's. Have you heard of this and any common fixes?

Thanks again for your time.
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-1
Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Honestly, there is a vent tube that runs from the tank along side of the filler tube (under vehicle). They are mostly steel, but they have a rubber hose that attaches the steel to the tank. If that plugs or gets damaged, air cannot escape from the tank when you feel it. As a result, the gas can't enter and comes back out shutting the pump. What a pain. It most likely takes you twenty minutes to get five gallons of gas. That vent is most likely where the problem is. I do not know that carburetor cleaner will clean it, but it is worth a try.
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JE3.8T&C
  • MEMBER
Thanks again! I think that I will take a look at the fuel neck and hope there is a vent on that tube. Look for any blockage on that vent line and try to clean it out.

I really appreciate your input and will let you know what I find.

Enjoy the day!
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JEEPINJEFF2678
  • MEMBER
  • 2005 CHRYSLER TOWN AND COUNTRY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 58,640 MILES
I have a 2005 T&C with the 3.3L and got a code saying the crank position sensor was going bad. I bought the sensor and cant find anything that looks like it on that motor. I did find the cam sensor and thought it would be around the right area but not having much luck. Any help would save me the wife is getting tired of having to drive my truck.
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JDL
  • EXPERT
Hello, my info shows the location to be, backside of engine block, down low. You may have to get under the vehicle, to get at it, be safe.
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JE3.8T&C
  • MEMBER
Just thought I would let you know that I have changed the air temperature sensor and the cam shaft sensor, neither one worked on the engine starting issue.

I have talked with a friend that works for Dodge. His mechanic thinks it may be a valve in the tank or the vapor canister solenoid. I am taking it to them the Saturday after this. Hopefully I will be able to continue to get gas into it until then.

I changed the shocks last night and a new sound (rattle) is coming from the back right side as I drive. I lifted the rear passenger side wheel well by hand and could hear a rattle also. Not sure what It is. If you have ideas or thoughts, would appreciate it.

I am guessing a loose bolt to the springs or a cross member? Maybe a bushing?

Thanks. I will let you know what the guys find out next weekend.
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Let me know.
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)
Tiny
JE3.8T&C
  • MEMBER
Update:
Had the van in to Chrysler. The tank was dropped down and discovered that someone had previously broken the plastic tube leading out of the vacuum pump and tried to cover it by gluing this piece back together. Very possibly happened about four months ago when another dealership changed out the fuel pump. I will have to replace the fuel tank.

Still having a start up issue that seems to be an overage of fuel coming into the engine before it will ignite and start the engine. Changed the spark plugs to Champion double platinum's, but still no change. Getting new spark plug wires next week.

I am running out of ideas for this issue.

My terrible clanging noise was the front bushing on the passenger leaf spring. Do not know if it was loose or not, but was told about how they need to be torqued to around 65 lbs.

Any thoughts about the start up issue would be appreciated. Thanks for your help and ideas over the past few weeks!
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Sunday, December 13th, 2020 AT 10:11 AM (Merged)

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