SPONSORED LINKS

Engine cranks but does not start?

Tiny
NASOLAND
  • MEMBER
  • 1995 CHEVROLET 1500
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 162,000 MILES
The vehicle won’t start.
I have changed the following parts:
Battery
Fuel filter
MAP sensor
Coil
All spark plugs and leads
Coolant Temperature sensor

I can hear the fuel pump when I turn the key.

There is spark.

But when trying to start it just cranks and cranks but won’t start. I did the test that your website suggested about shifting and trying with the car in neutral to test the neutral sensor on the transmission but that didn’t work. Any help you can give is appreciated.
SPONSORED LINKS
Thursday, August 18th, 2022 AT 6:42 AM

7 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Have you checked to see if you are getting fuel?
Does the fuel pump come on for a few seconds when the key is in the on position?
One way to tell if it is a fuel delivery issue is to spray starting fluid into the intake and try to start. If it starts for a few seconds and shuts off, then you will know the engine is not getting fuel.

Take a look at this helpful guide:

https://www.2carpros.com/articles/car-not-running-advanced

Let me know what you find or if you have any questions.
Thank you.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, August 18th, 2022 AT 10:47 AM
Tiny
NASOLAND
  • MEMBER
  • 4 POSTS
When I turn the key, I hear the fuel pump turn on. I checked for fuel and there isn’t any. I ran a Noid light test on both injector connectors and there was nothing, the light didn’t come on.

Interestingly though is that when I went out to the vehicle and removed the intake cover etc. And had a friend turn on the ignition it fired right up. I put the cover on again and the vehicle fired up three more times after running fine for about ten minutes each time. But when I went to start it again it is back to how it was cranking but not starting. I didn’t move the vehicle when starting and turning off.

What to do next?
Was this
answer
helpful?
Yes
No
Friday, August 19th, 2022 AT 10:13 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Have you scanned for error codes?
Was this
answer
helpful?
Yes
No
Sunday, August 21st, 2022 AT 10:24 PM
Tiny
NASOLAND
  • MEMBER
  • 4 POSTS
I checked and it is giving me error code 54.
Was this
answer
helpful?
Yes
No
Monday, August 22nd, 2022 AT 6:34 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
That code 54 - EGR system failure or fuel pump circuit low voltage.

So could be a wiring issue with the fuel pump, corrosion can prevent it from getting full voltage.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, August 23rd, 2022 AT 8:36 AM
Tiny
NASOLAND
  • MEMBER
  • 4 POSTS
What do I do to check the wiring?
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2022 AT 7:04 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
You will need to check the voltage to the fuel pump. It should be at 12V.

Here is a helpful guide on how to test wirings:

https://www.2carpros.com/articles/how-to-check-wiring

I have attached the fuel pump wiring schematics below for your reference.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Sunday, August 28th, 2022 AT 3:12 PM

Please login or register to post a reply.

Related Engine Not Running Content

Sponsored links