Question about GMC Safari

2 Answers

I have a 99 gmc saffari mini van. changed the fuel pump 2yrs ago. now sometimes it starts but when i won't start you can't hear the fuel pump humming like normal. but you can go and try to start it later or the next day and it will start right up. i was driving it and it died on the highway. wouldn't restart till the next day. we have checked the fuel relay. could it be the fuel pump again?

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 11,800 Answers

Yes, but i would look at the relay and contacts first - otherwise it would fail constantly , not randomly.
It's easy to test the pump anyway (just power it directly from the battery) so do that before testing everything else.

Posted on May 06, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 11,896 Answers

If the fuel pump is humming, then relay, pump, and fuse should be good and you could have plugged fuel filter or fuel pressure regulator if your not getting gas.
If you are getting gas, then you have no spark, likeley the CKP sensor.
If you cannot hear the fuel pump hum when placing the key to on position, test fuse, relay, and check power signal from computer and ignition to see if there is power going to the relay and pump

Posted on May 06, 2010

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

WHY 99 safari starts up runs stalls fuel pump not on plug under van hot unplug and plug back in van starts


its sticky the capacitor in its old an leaky too or put a capacitor on it to help it out sometimes works. 12000 mfd 25volt say/givertake

Aug 03, 2014 | 1999 GMC Safari

1 Answer

99 gmc savana stutters at consistant high speed.


My 99 GMC savana 1500 was chugging at like 50 60 mph and gas gauge was stuttering ..it turned out to be computer..I had it re flashed by GMC for 150 bucks ..that fixed all...hope this helps

Oct 09, 2012 | 1999 GMC Savana

1 Answer

93 chrysler t&c awd changed fuel pump and filter, van ran fine again for about 2 months now won't start and don't hear the fuel pump. changed the oil pressure sending unit and still won


fuel pick-up in tank is blocked it has a sock over the end as a gross filter to keep out any big junk from getting sucked into the pump and causing damage to it. the sock can get so plugged up that no fuel will flow, causing the pump to run for a short time then with no fuel flow to cool it it trips the safety and shuts off

Aug 12, 2012 | Cars & Trucks

1 Answer

I BOUGHT A GMC JIMMY THAT'S MY PROBLEM! JUNK!


A malfunctioning antitheft system can turn off injectors causing just such a problem. Look for a light on the dash that says SECURITY or ANTITHEFT. If this light is present, go to this link for help.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Dec 20, 2011 | 2001 GMC Jimmy

1 Answer

1998 GMC Suburban. Did an oil change about a month ago and then changed the spark plugs, but now the car won't even start??? I have no clue now.


When you initially turn on the ignition switch,(before engaging the starter) do you hear a humming sound from the rear of the vehicle for about 3sec's? (sort of like a motor running) If not, you have a bad fuel pump. (The fuel pump is located inside of the fuel tank)

Jan 03, 2011 | 1998 GMC Suburban

1 Answer

99 Suburban wont start


this sounds like you have a problem with the electric fuel pump sticking, that would be where i would look, when u turn the key on with the windows up do u hear a humming noise for about 3 seconds? if not the fuel pump is the problem.

May 26, 2009 | 1999 GMC Suburban

2 Answers

Engine in 1997 GMC Safari acts like it is trying to start but


Take off your gas cap and have someone stand there with thier ear at the hole, (no smoking), turn the key to on just before start and they should hear the fuel pump humming. if they dont then try to start. if it doesnt start turn key off and at that instant the pump should be heard again. What i think is happening is your pump is not energizing . Its supposed to energize when turning your key on and off. This can be caused by a bad fuel pump or pump relay switch. Hope this helps. please rate me

Dec 29, 2008 | 1997 GMC Safari

2 Answers

1993 Chevy Astro Mini Van not starting


if your mini van has a 4.3 litre engine v6, when you turn the key on you should be able to hear the electric fuel pump start. the fuel pump is inside the gas tank,if you hear the pump you might want to change the fuel filter. The thing about computerized engines and a throttlebody is that you need a fully charged battery to start work with.

Dec 19, 2008 | 1993 Chevrolet Astro

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

Related Topics:

25 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

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

Answer questions

Manuals & User Guides

Loading...