Question about 1986 GMC S-15

1 Answer

I have a 1986 GMC S15 that will start and run, but won't stay running?

Posted by Anonymous on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 579 Answers

My first guess would be a very bad vacuum leak, second guess would be fuel starvation. Check hoses for cracking ,breakage, check fuel filters from tank to engine. GOOD LUCK FRIEND.

Posted on Apr 17, 2015

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

  • 5 Answers

SOURCE: wont stay runnin

It sounds like the same problem I have on occasion with my 1994 GMC Safari van. You need to check your AIC valve ( air intake control) it may be bottomed out wich is the reason it starts but will not stay running. Now I also have another possilbe solution ckeck to see if your catlist converter is not plugged . Not shure why but these are some of the solutions that I have for what happenes to my van . Hope this info can be of some help.

Dave.

Posted on May 02, 2009

SOURCE: my 1986 gmc s15 will not stay started

Sounds like it only runs on starter fluid.sort of. Mine is an 84 with a carb. You may have a bad fuel injector or dirty at best. Have your checked for good spark or dist rotor pointing to #1 in dist cap at TDC. The timing chain may have worn and jumped a couple of teeth

Posted on Sep 26, 2009

ZJLimited
  • 17970 Answers

SOURCE: firing order for a 1986 gmc s15

FIRING ORDERS

To avoid confusion, ALWAYS replace spark plug wires one at a time.

The most important thing to remember about the removal and installation of a distributor, cap or spark plug cable is that all wires MUST be labelled before they are disconnected. Keep in mind that these figures depict a firing order where the distributor cap terminals are relative to EACH OTHER only and they do not necessarily depict the tower positions in relation to the rest of the engine. This is true because any distributor which has been removed and reinstalled may have been installed with the No. 1 spark plug tower at any position (360 degrees) in relation to the rest of the motor, as long as the rotor aligned to the No. 1 tower when the No. 1 cylinder was at TDC of the compression stroke (valves closed, ready for the plug to fire). As long as the remaining wires were connected in the correct firing order sequence (depending on direction of distributor rotation) the engine will run. DO NOT EVER remove more than one wire from the distributor cap at a time unless you tag ALL wires and towers to assure proper installation.

db45c9c.jpg

Fig. 1: 1.9L engine . Firing order: 1-3-4-2 . Distributor rotation: counterclockwise

cf6af5d.jpg

Fig. 2: 2.0L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise

5c33822.jpg

Fig. 3: 2.5L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise

cae855e.jpg

Fig. 4: 2.8L engine . Firing order: 1-2-3-4-5-6 . Distributor rotation: clockwise

9674e44.jpg

Fig. 5: 4.3L engine. Firing order: 1-6-5-4-3-2 . Distributor rotation: clockwise

I hope help you with this (remember rated this help) Good luck.

Posted on Oct 05, 2009

  • 2 Answers

SOURCE: replace u joint on GMC S15 pickup

You'll need a bench vice for this. A few sockets help as well. Once you get the shaft off the truck, put a smaller diameter socket on one side and a much larger diameter socket on the other and sandwich in a vice. Compress vice to drive the U-Joint through shaft (smaller socket will drive the one side through the other with the much larger socket). Installation is the reverse of removal.

Posted on Aug 02, 2010

  • 7 Answers

SOURCE: 1989 gmc s15 starts then dies

you need to check the battery cables and clean them and clean them, or it could be the coil needs replaceing or there might be a fuse blowed somewhere.

Posted on Mar 17, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

High idle gmc 1988 s15 poor fuel economy no check engine light


Change the temperature control sensor to the front if the engine near radiator
1 start the truck let it run till you think it is at normal operating temperature
2 unplug the temp sensor if the idle changes then the sensor is bad

Feb 08, 2014 | 1988 GMC S-15

1 Answer

1986 gmc s15 jimmy wiring diagram needed


check for a earth fault from the dash to the chassis this my main suspect

Nov 29, 2012 | 1986 GMC Jimmy

1 Answer

Have a 1986 GMC S15 6cyl that at tmes will not do anything when I turn the key over and other times it starts right up. What could be the problem?


Do you get dash warning lights when you turn the key and no crank ?
One possibility is the ignition switch, another is the starter. If it has an automatic trans, there is a neutral safety switch to keep you from starting the engine in gear.

Jun 25, 2012 | 1986 GMC S-15

1 Answer

1989 gmc s15 starts then dies


you need to check the battery cables and clean them and clean them, or it could be the coil needs replaceing or there might be a fuse blowed somewhere.

Mar 17, 2012 | GMC S-15 Cars & Trucks

1 Answer

Hi guys i have a 1986 gmc s15 it cranks but wont start and now it **** fireing plz help


i would check to see if you are getting fire from the coil, if not, i would have the coil checked out , and if bad , replace it, "if you are still having problems with it not starting, then i would check the fuel pressure.

Feb 19, 2011 | 1986 GMC S-15

2 Answers

Firing order diagram for 1986 GMC S15 2.8L


For this models:
1986 GMC S15/T15 4WD P/U 2.8 liter V-6 VIN "R"
1986 GMC S15/T15 4WD Jimmy 2.8 liter V-6 VIN "R"
1986 GMC S15/T15 2WD P/U 2.8 liter V-6 VIN "R"
1986 GMC S15/T15 2WD Jimmy 2.8 liter V-6 VIN "R"

c73278e.gif

Hope helped woth this. Remember rated this help. Good luck.

Nov 24, 2009 | 1986 GMC S-15

1 Answer

My 1986 gmc s15 will not stay started unless you keep shooting starting fluid in it. i have checked all fuses, changed the fuel pump and fuel filter.


Sounds like it only runs on starter fluid.sort of. Mine is an 84 with a carb. You may have a bad fuel injector or dirty at best. Have your checked for good spark or dist rotor pointing to #1 in dist cap at TDC. The timing chain may have worn and jumped a couple of teeth

Sep 26, 2009 | 1986 GMC S-15

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

Related Topics:

92 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

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

Answer questions

Manuals & User Guides

Loading...