Question about Cars & Trucks

1 Answer

1994 gmc sonoma 4.3 vortect. my gas line going to the injecters is getting gas but the return line back to the tank has no gas

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 318 Answers

Check preasure at relief valve intake. if below spec then you may need fuel pump replacement. if ok then you may need relief valve

Posted on Nov 27, 2012

Testimonial: "havent tryied it yet but ill check it out thanks"

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1861 Answers

SOURCE: FUEL NOT GETTING TO INJECTERS GOES BACK TO RETURN LINE TO TANK

Check to see if the 15 amp EFI fuse is blown.
This fuse controls the ECU and the injection.

Posted on Jan 15, 2009

  • 18 Answers

SOURCE: 1999 GMC Sonoma check engine light on when gas tank full

i have had the same problem and i found that it was the fuel pump causing the problem

Posted on May 11, 2009

  • 22 Answers

SOURCE: will not start after sudden braking at stop light, engin stalled

do you have spark?

Posted on Nov 30, 2008

Molson02536
  • 3854 Answers

SOURCE: I need to see the "how to's" in replacing the one way check valves on my 2001 gmc sonoma 4.3

On the 2001 gmc jimmy 4.3L v6 engine there are two air pump check valves: there's a pipe (about 1" diameter) that comes off each of the exhaust manifolds. the check valves are screwed onto those pipes. then a rubber hose (about 1.25" outside diameter) is clamped to the front of each check valve and connects to the air pump, which is hidden behind the vehicles grille in front of the radiator. typically, if you need to replace these (the life expectancy is about 3-4 years), it starts a chain of events that might be as follows: during the wintertime, water from the exhaust leaks through the worn out one-way check valves, and ends up in the air pump. the water freezes, and the ice jams the air pump, which may or may not ruin the air pump, but which usually blows the air pump fuse, which is impossible to find if you're rummaging around the passenger compartment fuse box or the under-hood fuse and relay box. it ain't there! so if you're looking under the hood leaning up against the front bumper, slide to your left around the passenger side headlight. now you should be looking at the battery, leaning up against the passenger side fender. look down between the battery and the fender. you have to push a few things out of the way, but there you will find a green 30 amp blade fuse (about 1" x 1" fuse--and $2.99 at autozone). this blown fuse should have triggered the check engine light and a DTC (diagnostic trouble code) of p0410 (secondary air injection system). for that vehicle there is a TSB (technical service bulletin) put out by gm (bulletin # 04-06-04-015; march 2004). if you want to print out some literature about all that i've mentioned just surf on over to http://www.obd-codes.com/p0410 for more links and documentation. my credentials: self-proclaimed auto mechanic for 26 years (sorry, no ase certification yet [but still trying to find time to study for the tests]) and college dropout (after 3 years of electrical engineering)--so, in other words, don't believe a word i say; just go to that website and get it straight from the horse's... 
Good luck and hope this helps. I know you have a Sonoma but we have the same platform. I am thinking of buying a set of headers without the Air injection system and having the jimmy dyno tuned again to eliminate the service engine light and recalibrate the ECM to eliminate the air injection pump. 

Posted on May 25, 2009

sparxxinct
  • 73 Answers

SOURCE: 90 GMC PU brake line over gas tank has leak-need diagram

no you can cut and reroute the line ive done it in the past many times. just remember more line means more fluid so after you bleed it check the level again after a week or so.

Posted on Jun 11, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Fuel pump stays on in 1994 gmc sonoma


for sum reason it is not building pressure could be rubber line inside of gas tank.It could be pumping gas into oil pan because of bad regulator be sure your oil pan is not full of gas

Oct 01, 2014 | 1994 GMC Sonoma

1 Answer

I have a 2000 gmc sonoma when the gas gets below a half tank its hard to start it will also die while ur driving it and it backfires when you try to start it but only when it gets below a half tank


There is a metal chamber that is in the fuel pick up line about 1/2 way up designed to take the pulsation out of the pump.If the o rings are bad or the pump has been changed (some mechanics take the pulsator out and replace it with fuel line but if they didn't use fuel injection line it will only last like a few months.)
Either way sounds like the tank has to come out.

Mar 05, 2012 | 2000 GMC Sonoma Extended Cab

1 Answer

How to disconnect fuel line from 1994 Sonoma GMC truck that has been sitting for long time to clean out the fuel line


hi ... Raise and support the truck ... just enough to reach the fuel and vent lines. Disconnect the fuel and vent lines using the needle-nose pliers ...there clamps might need screwdriver might wanna drain the tank , if been sitting for long time water and rust mess up your fuel pump,causeing the fuel filter fail. thanks

Sep 30, 2010 | 1994 GMC Sonoma

1 Answer

Where is the fuel filter on a 1994 gmc sonoma 2.2 L ? i need to replace the old one, it is getting clogged.


under vehicle drivers side mounted on frame rail between gas tank and drivers door

May 24, 2010 | 1994 GMC Sonoma

1 Answer

1994 Sonoma: 1994 GMC Sanoma with 4.3 fuel injection. Idle spee...


that is un adjustable you would have to change the idle postion sensor

May 05, 2010 | 1994 GMC Sonoma

1 Answer

Is there any special things to do when taking off and replacing a gas tank for a 1994 sonoma 6cyl z


run it dry or pump it empty, then you should be all set to battle the tank straps...oh joy

Feb 17, 2010 | 1994 GMC Sonoma

3 Answers

Unsolved Problem!


Have you looked at the gas or gas tank. It could be full of water. Your specific pump could be sitting up high where the gas water line settles after a period of time. Try some dry gas and run the tank out.

Jul 19, 2009 | 1996 GMC Sonoma

2 Answers

How to replace fuel filter?


if you can't find one, it might be that either it doesn't have one (as some cars) or it might be located inside of fuel pump assemply (inside fuel tank) but that's a longer story :)

Jul 08, 2009 | 2001 GMC Sonoma Extended Cab

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

65 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76848 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...