car cuts off when cranking it

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Customer

car cuts off when cranking it

Last updated
Relly De Jesus
BMW Mechanic

Hello and welcome to ExpertHelp.com! My name is Relly De Jesus and I'm going to do everything in my power to answer your question to your full satisfaction!

Before we get started, I want to remind you ExpertHelp.com is an independent professional support company. We are not associated with BMW nor are we paid to provide support on their behalf. However, we have helped hundreds of customers with similar questions and believe we can help you too. OK, let’s get started! :)

I’m available to chat now. Please let me know that you are ready by posting a response. I’ll leave my chat session open for the next 15 minutes or so and wait for your reply. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.

Last updated
Customer

im ready to get started

 

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Relly De Jesus
BMW Mechanic

Hello Sherri

How are you doing? May I know the year and model of your BMW?

Relly

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Customer

ill be doing when my car is on the road but im good

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Customer

2004 bmw x5

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Customer

it keeps cutting off when i crank it

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Relly De Jesus
BMW Mechanic

Ok Sherri... I'm just gonna ask you a few questions so we can sort things out. When you crank it up will it run for a few seconds then gonna shut down?

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Customer

i had codes for oxygen sensor and map sensor i replaced those

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Customer

yes to your question

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Relly De Jesus
BMW Mechanic

Ok... the map and oxygen sensors are just one of the few that can cause this issue. Have you tried removing the battery connectors?

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Customer

yes i took the battery connectors off

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Relly De Jesus
BMW Mechanic

Since you owned this car Sherri does it have any history of crankshaft position sensor replacement?

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Customer

i dont know i got the car from a used dealer and havent had it a year and been having problems day one

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Customer

soon as i got the car and got home the coolant tank burst i replaced that

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Relly De Jesus
BMW Mechanic

Along the same lines as the symptom above, a problem with your crankshaft position sensor could cause your vehicle to stall and/or backfire. Stalling is more common than backfiring as the interruption of the crankshaft signal can cause the engine to be cut off

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Customer

then i had to get it towed home from shopping because it ran hot and it was a bad radiator when i bought it i replaced that

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Relly De Jesus
BMW Mechanic

I see... looks like that this car has been a real challenge for you. Please take note that a bad crankshaft position sensor may not appear on the scanner. May I ask if you can hear the fuel pump priming when you turn the car on ON position? Do you hear like a humming noise from the tank before you start it?

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Customer

do i need a new one

 

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Relly De Jesus
BMW Mechanic

May I call you on the phone number you gave us Sherri? Please don't leave this chat while we are talking over the phone. Thank you

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Customer

i hear the fuel pump priming when i turn the car to on position

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Customer

my phone is dead thats why im chatting

 

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Customer

i hear a humming noise from the tank before i start it

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Relly De Jesus
BMW Mechanic

Good to know that the fuel pump is priming Sherri. You will need to replace the crankshaft position sensor as a first course of action

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Customer

i just plug my phone back up give it a few minutes

 

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Relly De Jesus
BMW Mechanic

Good... so that we can talk over the phone as well. 

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Customer

where exactly is this located under the hood i saw the diagram but i want to know where exactly in the front or to the side

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Customer

ok you can call me now is this extra

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Relly De Jesus
BMW Mechanic

No Sherri you won't be charged extra for the call. PLease don't leave this chat page. Give me a bit. Thank you

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Customer

ok you can call

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Relly De Jesus
BMW Mechanic

OK... calling now

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Relly De Jesus
BMW Mechanic

Please click the link below for the location of crankshaft position sensor. 2:54

CRANKSHAFT POSITION SENSOR

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