Jump to content

3.4L DOHC Dies on the Highway


scottwhite98

Recommended Posts

Yup. Mine looks a bit different.   There are two  lines coming from it.  A small plastic line and a hard steel line that goes under the inspection cover. 

Both of these hold vacuum. 

 

I guess that only leaves the fuel pump?

 

 

 

Link to comment
Share on other sites

The steel tubing runs down to the vacuum modulator on the trans.

One more test you can try.......pinch off the return fuel hose under the throttle body back to the tank, see if you still a low pressure situation,

 

 

*one last thought.......you did Not mention whether or not you can hear the pump priming when you turn the key to *run*.........either the pump won't spin up or the relay will not let it......

 

If you're satisfied that you've eliminated the FPR as the low pressure source & there's no other location along the fuel lines where pressure can be lost then you're dropping the tank to go get the pump out.

Edited by 55trucker
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...