- This topic has 2 replies, 3 voices, and was last updated 10 years, 8 months ago by
.
-
Topic
-
My 1996 suburban will sometimes start and most times will not. It is a 5.7 vortec v-8. On those times it does it will not stay running. It may run a minute or 30 minutes then shut off and not start again. I know when it is not starting the fuel pump is not pumping. I replaced the pump, relat and filter and can’t find the cause, any ideas?
-
Replies
-
Is the check engine light comes on when you turn the key on and the issue occur? You may have a bad ignition switch.
If the light is on. Can you confirm you have spark? as well as checking for fuel pressure.
The fuel injector might be a bit tougher to test but I would put a fuel pressure gauge on the truck and see when it fail if pressure drop . If it does drop you still might have a fuel pump issue. Bypassing the relay you looking at the fuel pressure you tell you for sure.
With any no start you have to find out what is missing during the no start. If your fuel pump isn’t running this video might help.
More information on diagnosing no starts can be found here
http://www.ericthecarguy.com/faq/solving-automotive-no-start-problems
It’s basically a process of elimination. The above article provides a guide on what to check and how to check it.
Good luck and keep us posted.
- You must be logged in to reply to this topic.