van wont start - Car Troubleshooting


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

Car idles funny but doesn't throw codes

2006 Hyundai Elantra Engine size: 2.0L m...

Rear brake retaining clips

2015 Toyota Camry. I bought Import Direc...

Sanded rotors (deep scratches)

I'm new to the forum and I have a couple...

2010 Mazda 3 Electrical Going On and Off while driving

I drive a 2010 Mazda 3. It's always been...

Code P0193 Fuel Rail Pressure Sensor Circuit High Bank 1

2004 Ford E-350 Super Duty Ext Cargo Van...

speedometer wild deflections; sometime pump gas

1999 Gmc Savana, rwd, 5.7 (I think) v8 ...

Car stalling problem

My 2013 hyundai started losing power whe...

2018 Kia soul. Knocking while accelerating.

Hello, my 2018 Kia soul started making t...

2005 Buick Lesabre surging

My 2005 Buick Lesabre runs good & th...

Misfire on coil E

I am new to this forum. I haven't figure...

van wont start

Sign up here!

Search for (search options)

Auto Repair Home>> Automotive Repair>> Car Troubleshooting

Guest
Anonymous Poster
deew84@cavtel.net

Jun 11, 2008, 7:03 AM

Post #1 of 5 (1690 views)

van wont start	Sign In

HELP PLEASE!!!!!!!!!!!!!!!

MY 1993 DODGE CONVERSION VAN WONT START.
THE MECHANIC IS BAFFLED. HE SAYS IT IS NOT
GETTING 12 VOLTS TO THE IGNITION COIL. I KNOW
HE TRIED RUNNING A WIRE FROM THE COIL TO THE BATTERY AND IT DID NOT WORK.

DanD
Veteran / Moderator
DanD profile image

Jun 11, 2008, 7:21 AM

Post #2 of 5 (1687 views)

Re: van wont start	Sign In

What is the model & engine size?

Dan.

Canadian "EH"

Guest
Anonymous Poster

Jun 14, 2008, 6:43 AM

Post #3 of 5 (1672 views)

Re: van wont start	Sign In

dodge ram 2500
5.8l

dave284
Enthusiast / Moderator

Jun 14, 2008, 2:29 PM

Post #4 of 5 (1659 views)

Re: van wont start	Sign In

The pcm controls the ignition coil, the power is supplied thru ads relay switch and the pcm opens and closes the ground circuit to the coil,.... so just running 12 volts to the coil won't do any good its the negative side of the coil that triggers the spark.

DanD
Veteran / Moderator
DanD profile image

Jun 15, 2008, 4:22 AM

Post #5 of 5 (1656 views)

Re: van wont start	Sign In

As Dave said running power to the ignition coil won’t go anything if the rest of the system that the auto shutdown (ASD) relay powers, isn’t getting powered up.
Due to a possible open in the dark green/orange wire of the ASD circuit or one of the splices, that split the circuit, to the different parts of the circuit.
The ASD also supplies power to the fuel injectors, O2 sensor heater, alternator field, PCM (computer) and of course the ignition coil.
What your guy needs to do, is check for continuity (connection) of the ASD’s dark green/orange wire between all of the different units that are on this circuit.

While checking for power, at the coil or any other part of this circuit, remind the person working on the van. The ASD only stays on for 2 or 3 seconds after the ignition switch is turned on, without the engine running. In other words the PCM turns the ASD off, if the PCM doesn’t see a RPM signal.

The ASD stays on the same amount of time that the check engine light stays on, when the ignition switch is turn on.

Does the check engine light come on when the ignition is turned on?
Can you here the ASD and the fuel pump relay click on and then off, after the ignition switch is turned on?

Dan.

Canadian "EH"

Search for (options) Privacy Sitemap