Question about 1991 Chevrolet Silverado 2500

2 Answers

I have a 1991 chevy truck, I am getting no spark. I have changed the ECM, distributor and coil. still no results. I have no idea of what to do.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 175 Answers

Possibly ignition switch, Power (12 volts) going to distributor goes through ignition switch.If you read voltage on the primary side of the coil, with the ignition key on, can you read 12 volts, maybe a little higher? If not, that's pointing to a problem. Good luck.

Posted on Jun 29, 2009

  • 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.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 148 Answers

Check to see if your truck has a crankshaft position sensor, its usually located behind the harmonic balancer or right near there, if the sensor went bad or if the wiring got messed up there will be no signal to the ecm telling the ecm when to send spark to the coil. the crankshaft position sensor is responsible for telling the computer when to fire the spark plugs based on rpm and timing. check the wires on the crankshaft position sensor, if they look fine, replace the sensor, hope this helps!

Posted on Jun 29, 2009

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

Chevy c1500 no spark


I agree, the ECM

Jan 08, 2014 | Cars & Trucks

1 Answer

No spark


well you didn't say what year it was , keeping that in mind I will try to respond with the info you did give. Generally the Chevy G20 vans have a coil mounted in the distributor itself, so having spark comming from the coil would mean it is not flowing through the rotor to the plug wires..... not sounding right to me either,... Possibly just a bad Distributor cap unless you have already replaced it. So I would have you look at the Ignition module first and the pick up coil second.. not mush else it could be ( ruling out a broken timing chain ) If it is a newer vehicle , it may have a crank position sensor failing or ecm.

Apr 26, 2011 | 1991 Chevrolet Caprice

2 Answers

My car has no spark it has a new crank senor i tested the ecm it passed so what could it be


it is mounted on the side of the ignition distributor body, here is a picture, u should also change the Stator inside the distributor, this requires you remove the distributor from the engine and then drive out the roll pin that holds the drive gear on, this is not for the do it yourself-er

TFI Module picture

141b9ea.jpg

Dec 01, 2009 | 1991 Chevrolet Lumina

1 Answer

1991 chevy 4x4 2500, we changed the distributor,


Timing chain and gears may need replacing. Is the timing correct? Like number 1 at top of compression stroke and the dist. is on 1. How about a new coil too. Try a coil first. They go bad on these a lot.

Jul 12, 2009 | 1991 Chevrolet C/K 2500

1 Answer

How to troubleshoot 1993 chevy Z71 pcm


Hi Nsilguero,

I apologize for the delay in responding.

From your description, I'm leaning toward a timing chain problem, first stretching, then skipping and finally breaking.

If you're getting voltage to the coil and still getting no spark, there is a test I'd like you to try.

Take off the distributor cap and have someone turn the engine over while you eyeball the rotor. Is it spinning?

This going to take some back and forth interaction. Comment me back with the results. We will proceed from there.

Mike

Jan 09, 2009 | 1993 Chevrolet C1500

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

2,230 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75817 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8180 Answers

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

Answer questions

Manuals & User Guides

Loading...