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Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1740
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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Car won't start and stay running. Change cam sensor and

Customer Question

Car won't start and stay running. Change cam sensor and crank sensor. Runs about 2-3 seconds then dies
JA: Does the vehicle stall at low speeds? Does it sputter?
Customer: No wont stay running
JA: What is the model/year of your Dodge?
Customer: 2001sxt
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes
JA: Anything else you think the mechanic should know?
Customer: Starts then dies runs 2-3 seconds
Submitted: 3 months ago.
Category: Dodge
Expert:  Amedee replied 3 months ago.

Hello and welcome! My name is ***** ***** I can assist you with your question. Are you looking for possible causes or would you like me to walk you through this diagnoses? Have you checked for codes in the computer? Is there an anti theft or security light on or flashing on the dash when trying to start the engine?

Customer: replied 3 months ago.
No
Expert:  Amedee replied 3 months ago.

No to which question?

Customer: replied 3 months ago.
No light flash
Expert:  Amedee replied 3 months ago.

Ok, thank you for that information. Have you checked for spark and or fuel delivery?

Customer: replied 3 months ago.
Car starts runs for about 2 - 3 second then dies changed cam and crank sensors
Expert:  Amedee replied 3 months ago.

I understand. Have you checked for spark and or fuel delivery?

Customer: replied 3 months ago.
Spark and fuel good
Expert:  Amedee replied 3 months ago.

Excellent! And what about compression?

Customer: replied 3 months ago.
Good
Expert:  Amedee replied 3 months ago.

What are the readings on each cylinder?

Customer: replied 3 months ago.
Do not remember. Car was running good then code said cam sensor. Changed then said crank sensors changed now runs 2 3 seconds. Someone said BMC unsure what that is.
Expert:  Amedee replied 3 months ago.

Can you check the compression for me and get back to me with the readings? Thank you

Customer: replied 3 months ago.
What is going on is this a scam or can you help me.
Expert:  Amedee replied 3 months ago.

Yes Sir. I can help. I need you to run some tests so we can continue.

Customer: replied 3 months ago.
Compression is good checked out by a garage
Expert:  Amedee replied 3 months ago.

So the spark, fuel and compression are good. So then why does the engine not stay running?

Customer: replied 3 months ago.
That's why I'm asking for help sir.
Expert:  Amedee replied 3 months ago.

I understand. Please listen.

Expert:  Amedee replied 3 months ago.

It is not possible for spark, fuel and compression to check out good and the engine just simply stalls out. It is simply just not possible. How do I know this? Because I am the expert.

Expert:  Amedee replied 3 months ago.

But you keep telling me they are all "good"

Expert:  Amedee replied 3 months ago.

I am telling you sir, that is not the case.

Expert:  Amedee replied 3 months ago.

If you are willing to speak on the phone, I can call you right now and explain

Customer: replied 3 months ago.
I am sir it doesn't make sense to me either. Just trying to get my son's car running again. Was running good then code said cam sensor and crank sensors are bad changed both now this.
Expert:  Amedee replied 3 months ago.

I can get the vehicle running. You must trust me

Customer: replied 3 months ago.
Another $26 right
Expert:  Amedee replied 3 months ago.

Thats correct

Customer: replied 3 months ago.
Get it running then more money. Trust me im willing need more information first
Expert:  Amedee replied 3 months ago.

NO problem. Please check engine compression and report back. Thank you

Customer: replied 3 months ago.
Dont have compression tester at my home
Expert:  Amedee replied 3 months ago.

Ok, you will need to purchase or rent one.

Customer: replied 3 months ago.
More a security thing .do you know what bcm is?
Expert:  Amedee replied 3 months ago.

That would be the body control module sir

Customer: replied 3 months ago.
It has fuel spark and compression.would bcm be the cause.
Expert:  Amedee replied 3 months ago.

NO sir

Customer: replied 3 months ago.
What else..???any ideas to try
Expert:  Amedee replied 3 months ago.

Check engine compression

Customer: replied 3 months ago.
Was told it has good compression by dodge dealer have spent$100s already had it to dealer could figure out. Just not right to spend that kind of money and get no results. Can understand that right
Customer: replied 3 months ago.
Had to tow back home now trying online
Expert:  Amedee replied 3 months ago.

So how do you plan on diagnosing this problem without any tools?

Customer: replied 3 months ago.
I have tools. Have changed everything myself.just dont have compression tester here and was told good by dealershipcompression
Customer: replied 3 months ago.
After i changed everything it ran good then shut it off and this started going on.
Customer: replied 3 months ago.
Starts runs 2-3 seconds and dies
Expert:  Amedee replied 3 months ago.

Does the engine remain running on starting fluid?

Customer: replied 3 months ago.
No was told security problem. Dont make any sense. RIGHT
Expert:  Amedee replied 3 months ago.

But there is no security light on the dash correct?

Customer: replied 3 months ago.
Do you know of a another forum to go to .no light on dash
Expert:  Amedee replied 3 months ago.

No sir. I only know this forum. You could have a BUS communication issue causing this problem

Expert:  Amedee replied 3 months ago.

What codes are in the computer?

Customer: replied 3 months ago.
Going out to ccar now. Hard because I was in a accident and broke nake and back so give me a minute or three
Expert:  Amedee replied 3 months ago.

ok

Customer: replied 3 months ago.
Calli g my son to see if he's off work yet to bri g over scanner and compression tester.worked on car at his place.car now at my house
Expert:  Amedee replied 3 months ago.

Ok