Question about 1987 GMC VanDura

2 Answers

What would make you have fuel coming from tank but not out injectors on a 87 GMC vandura 5.0

Posted by on

Ad

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
  • 3,635 Answers

The fuel injector, two wire connector, one is voltage, goes hot with the key on. The other is ground, controlled by the computer. The computer needs to see rpm signal to pulse the ground.
From the ignition module to computer, purple wire with white tracer carries rpm signal to computer, if no signal, the computer won't ground the fuel injectors, in my opinion.
If you have a digital multimeter that has a tach setting, it should react to a dc pulse on that purple wire with white tracer, engine cranking.
The usual culprit is the ignition module, but, I can't rule out other possibilities.
Engine cranking, do you have spark at the spark plugs?

Posted on Dec 15, 2016

Ad
  • 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
  • 2,431 Answers

The throttle body injector are turned on by a cam position sensor this is located in the distributor,

Posted on Dec 15, 2016

Ad

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.
New users get to try the service completely Free afterwhich it costs $6 per call 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

What would make you have fuel coming from tank but not out injectors


Is there B+ voltage to the injector ? Is the engine computer controlling it ? Suggest you watch youtube videos on injector control . Inside the PCM - engine computer are transistors which control the injector.

Dec 14, 2016 | 1987 GMC VanDura

1 Answer

Where is the fuel filter located on a 1986 gmc vandura 3500 cargo van?I followed the fuel lines from the tank all the way,I just can not seem to find it.thanks Martin


should be in the base of the carb, right behind that big nut on the fuel inlet. Loosen the fuel line, using a 5/8" wrench on the line nut, and a 1" wrench on the larger nut. remove the fuel line, then back the large nut out, and the filter will be behind that. have a good day !

May 13, 2011 | GMC Vandura Cars & Trucks

1 Answer

Replaced the Fuel Delevery System/Pump and the in-line fuel filter on my 93 GMC Vandura Van 2500. Van turnes over; however, no fuel in getting to the engine. I have checked the Fuel Pump...


install a fuel pump guage and check pressure at key on and start, it should hardly vary, it the pressure is constant check the injector signal with a noid light, while you are at it check spark(no spark no injector signal) you won't find a relay fuse

May 07, 2011 | GMC Vandura Cars & Trucks

1 Answer

Where is the fuel sensor? I have a 1987 GMC


What kind of fuel sensor are you referring to?
If you mean the fuel tank level, it is usually in the top center of the gas tank.
There is usually an air sensor that tells the fuel injection processor how much fuel it should squirt, based on time, but it does not sense how much gas actually got squirted.
The oxygen sensor is sort of like a fuel sensor, in that if there is too much fuel, the oxygen sensor will read too low, and the system will reduce the fuel squirt volume. And the oxygen sensor is usually in the bottom of the exhaust manifold or the top of the exhaust pipe.

Apr 07, 2010 | 1987 GMC VanDura

3 Answers

Van wont start But has power.can some one help


you need to have some to stand back by the side of the van while you turn the key to listen if you can hear the fuel pump if not check out the fuel pump really first before replacing the fuel pump if its in the tank give these websites a try www.alldatadiy.com and www.autozone.com.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your van wish you the best Michigan Man.

Nov 06, 2009 | 1987 GMC VanDura

2 Answers

The fuel wont stay up it drains back to the tank


how it seems that your fuel pressure regulator is bad, if it's a carburated vehicle then your fuel pump is going out.

Aug 23, 2009 | 1984 GMC VanDura

1 Answer

Looking for the location of the fuel filter for my 1988 4.3 liter 1500 series gmc Vandura


should be under the vehicle on the drivers side of the frame. if not look under the vehicle follow the fuel lines from the gas tank and you will find it.

Jun 20, 2009 | GMC R1500 Cars & Trucks

1 Answer

New pump and selecter switch on 87 v1500 runs when fuel is poured


The relay should be on the fire wall. A oval shaped grey relay about 2.5 in tall. Good Luck

May 15, 2009 | 1987 GMC VanDura

1 Answer

Gmc vandura 1996, 3500 running rich


There could be all kinds of reasons your vehicle runs rich. It should be fuel injected not carborated. It could have a bad injector, bad air filter, o2 sensors etc. Have it scaned for the reason.

May 18, 2008 | 1987 GMC VanDura

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

Related Topics:

18 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

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

Answer questions

Manuals & User Guides

Loading...