Car cranks but will not start

Tiny
MERQ346
  • MEMBER
  • 2006 CHRYSLER 300
  • 147,000 MILES
Replaced fuel pump and fuel filter and tried replacing relay and camshaft sensor. Cannot hear fuel pump turning on either.
Saturday, August 24th, 2019 AT 11:05 AM

4 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Okay, can you double check the connector going to the fuel pump again. If the connector is okay then can you please double check the fuel pump fuse which is located in the Power Distribution Center in the right rear of the trunk. It is fuse 6(20A). If the fuse checks out okay, then can you please check the voltage a pin #5 of the fuel pump connector. Or will need to use a digital multi-meter to do this and below is a link explaining how to use a DMM, if needed. Also here is a link for how to check fuses, if needed, as well:

https://www.2carpros.com/articles/how-to-use-a-voltmeter
https://www.2carpros.com/articles/how-a-car-fuse-works

In the diagrams down below I have included a wiring diagram of your vehicle's fuel pump, a diagram of the connector and a diagram with location and callout for the power distribution center. Please go through these guides and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Monday, August 26th, 2019 AT 4:10 AM
Tiny
PENCE1987
  • MEMBER
  • 3 POSTS
I have the same problem. The diagrams you included are a little to blurry to read. But when I jump power straight from the battery to the 5 pin fuel connector. The dark blue / orange wire I get the fuel pump to work like it supposed to. I am even able to drive the car like this. Once I remove the connection, the fuel pump cuts off.
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Thursday, January 16th, 2020 AT 5:09 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Okay, so it sounds like there is a problem in your vehicle's fuel pump circuit in between the battery and the fuel pump connector. So we can narrow the circuit down until we find the problem area. The first place I would check would be the fuse box where the fuel pump fuse is located. In the diagrams I sent previously I sent a diagram with call out of the fuel pump fuse and sent a link to a guide explaining how how to check an automotive fuse. This will cut the circuit effectively in half and tell us if there battery voltage at this point. If there is battery voltage then the problem is in between the fuse and the fuel pump electrical connector, if there is no battery voltage at the fuse then the problem is in between the battery and the fuse. If the fuse is blown, then this is caused by a short to ground somewhere in the fuel pump circuit and we have to reset, but we will know why battery voltage is not reaching the fuel pump electrical connector. Please go through the guides and diagrams previously sent, check the fuel pump fuse and get back to us with what you find out. We can go from there.

Thanks,
Alex
2CarPros
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Thursday, January 16th, 2020 AT 8:27 PM
Tiny
PENCE1987
  • MEMBER
  • 3 POSTS
I will give this a shot and get back to you.
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Friday, January 17th, 2020 AT 6:07 AM

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