How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Jerry Your Own Question

Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 13211
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
2947720
Type Your Dodge Question Here...
Jerry is online now
A new question is answered every 9 seconds

95 DODGE RAM 1500 5.9 CRANK NO START NO FUEL NO SPARK NO ...

Customer Question

95 DODGE RAM 1500 5.9 CRANK NO START NO FUEL NO SPARK NO INJ PULSE NO POWER TO COIL
Submitted: 6 years ago.
Category: Dodge
Expert:  Leo replied 6 years ago.

Hi, and welcome to Just Answer!

I hate to be a pain, but to answer your question, I'm going to have to ask you a few first, let's see if we can come up with a solution to your problem. Some of the questions may seem strange, but answer them as best you can.

When the key is turned on, does the check engine light come on for a few seconds?

When the key is turned on, do you hear the fuel pump run for a few seconds?

Have you had the computer checked for fault codes?

Finally, have any repairs been done recently besides the PCM (trans removed, anything at all?).

Looking forward to hearing from you, sorry about all the questions!

Leo

Customer: replied 6 years ago.
NO POWER TO FUEL PUMP NO SERVICE LIGHT ON TRANS REPLACED YEARS AGO
Expert:  Leo replied 6 years ago.

Just to clarify a bit..

When you turn the key from off to run, the check engine light does not come on for a few seconds (with all the other indicator lights for bulb check)? Nor does the fuel pump come on for 2-3 seconds?

Not while your cranking on the engine, but just when the key is turned on.

This is a very important detail, and I just want to make sure we are understanding each other.

Thanks,
Leo

Customer: replied 6 years ago.
I UNDERSTAND NO LIGHT IS ON IN ON POSITION NO INFO CAN BE RETRIVED OUT OF PCM W/SCANER FUEL PUMP WILL NOT RUN NO POWER
Expert:  Leo replied 6 years ago.

Hi,

Just making sure we were on the same page... The computer is unresponsive.

This is caused 99% of the time by a shorted sensor. The three big culprits are;

  • crankshaft position sensor (on the back of the block, just behind passenger side cylinder head)
  • camshaft position sensor (in distributor)
  • vehicle speed sensor (in tailshaft on a 2x4, or transfer case output housing on a 4x4).

If any of these 3 sensors get's shorted out, it will put the controller to 'sleep' for a lack of a better term. Unplug them one at a time, then cycle the key and watch for the check engine light to come on for bulb check and the fuel pump to run for a few seconds.

When you see the check engine come on for bulb check / hear the fuel pump run you will know you've found the shorted sensor, replace it.

It's possible you have a power or ground issue to the PCM, but 99% of the time it's one of the three sensors above shorted out. Depending on how the truck was built it may or may not have the vehicle speed sensor, I believe yours will though.

The reason I asked about a recent transmission replacement is that often times the crank sensor wire gets pinched between the bellhousing and block, then 200 miles later when it finally wears through the insualtion the truck quits + acts just as you describe.

Check it out, let me know what you find. It's most commonly the crank sensor. If this information helps you out please click accept, if it doesn't reply back and we'll move on to the next step.

Leo

Customer: replied 6 years ago.
TRIED IT NO LIGHT YET
Customer: replied 6 years ago.
TRIED ALL THREE SENSORS NO LIGHT COMES ON
Expert:  Leo replied 6 years ago.

Hi,

With the sensors unplugged could your scan tool communicate with the PCM? It will generally be immediately obvious as to what sensor is at fault as you'll hear the pump kick on along with all the relays when the key is cycled on.

It looks like we are moving into the 1% side of the operation.. Give me a few minutes to put together some info on you, the next step is checking powers + grounds to the PCM.

If you've got a second while I'm compiling it and the scanner / code reader hand, see if it can access the pcm with them unplugged.

I'll reply back in a few minutes,

Leo

Customer: replied 6 years ago.
NO LIGHT NO CONEECTION WITH SCANNER
Expert:  Leo replied 6 years ago.

Does your PCM have one connector, or three?

Leo

Customer: replied 6 years ago.
1 CONECTOR
Expert:  Leo replied 6 years ago.

I thought it would. My service info keeps showing a newer style (3 connector) PCM, and that's not going to help you a bit. I'm going to keep searching for the correct pinout, and if I can find it I'll post it.

In the meantime I'm going to opt out in case another expert has the info you need and they are just waiting for me to get out of the way.

Please don't click the accept button as I haven't been much help to you and I'm sorry about that.. At this point they haven't charged you for the question and you can get your deposit back if nobody can come up with the info you need.

As a parting though I've seen the ground wire come loose / break that's hidden behind the power steering pump on the drivers cylinder head.. The large ground goes to the battery and the small ground goes to the PCM, if it's bad you will have a no response. That's a bit of poke and hope though without checking at the PCM.

Leo

 

 

Expert:  Jerry replied 6 years ago.

Hello Buzz and welcome, Super mechanic here. I was wondering if you had ever checked the fuse links and fuses. You want to have power to the ignition coil as well as the injectors when the key is on.

They are powered through the ASD relay, you can test it with a 12v test light, here is what it looks like,

You may want to switch it with another good relay with the same numbers on it, just to see.

Here is a wiring diagram that may help in pinpointing the power loss, thanks

 


Copyright © 2002 Delmar, All Rights Reserved.

Expert:  Jerry replied 6 years ago.
Hi.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
< Last | Next >
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Rev. Jerry Baysinger Holts Summit, Mo
  • I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again. Greg Pittsburgh, PA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Jerry Holts Summit, MO
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
 
 
 

Meet The Experts:

 
 
 
  • Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
< Last | Next >
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
  • http://ww2.justanswer.com/uploads/MO/MoparCertified/2012-6-7_4142_mechanic.64x64.jpg Mopar Certified's Avatar

    Mopar Certified

    Dodge Technician

    Satisfied Customers:

    5813
    24 Year Chrysler/Dodge Certified Specialist
  • http://ww2.justanswer.com/uploads/jeep10000/2008-9-18_222938_192601.jpg Chris's Avatar

    Chris

    Shop Foreman

    Satisfied Customers:

    4041
    ASE and Chrysler Certified Master Tech
  • http://ww2.justanswer.com/uploads/ke4ich/2009-08-12_212931_DSC02211.JPG moparfl's Avatar

    moparfl

    ASE Certified Technician

    Satisfied Customers:

    3285
    ASE Master Tech Gold level Chrysler Status 30 years dealership exp
  • http://ww2.justanswer.com/uploads/DO/dodgerench/2012-8-1_1142_IMG3173.64x64.JPG Dodgerench's Avatar

    Dodgerench

    ASE Certified Technician

    Satisfied Customers:

    2480
    30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Dodge Mechanic

    Satisfied Customers:

    1870
    30 years experience in Dodge Chrysler and Plymouth
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    1664
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL