random dying and battery gauge jumping around - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-25-2013, 06:27 AM
Member
 

Join Date: Mar 2013
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
random dying and battery gauge jumping around

95 E350 7.3 turbo diesel 91,000 miles ambulance package

When i start the rig the battery gauge shows very low charging then about every 30 sec the engine will smooth out and the gauge will go past half towards 18 then will start idling a little rougher and the gauge will go back down below half. It does this over and over. I can visually see the gauge move down quite a bit when i just roll a window up or down.

It also has a random dying problem. Sometimes it will do it within 30 sec of starting and sometimes will take an hour and sometimes you cant make it die. After it dies it will sometimes start right back up. Other times it wont start for an hour or over night.

2 new batteries. Cleaned up all the connections so that's not an issue. Maybe alternator?

Thanks,

Jarrett
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 04-25-2013, 07:25 AM
Can you hear the derail??

 

Join Date: May 2011
Location: Canton and kennesaw
Posts: 18,602
Thanks: 3
Thanked 47 Times in 43 Posts
Feedback Score: 3 reviews
checked connections on the alt? and your issues with it falling dead have you checked the cps?
Reply With Quote Quick reply to this message
  #3  
Old 04-25-2013, 07:44 AM
Compression Ignition Addict
 

Join Date: Aug 2008
Location: Madison, WI
Posts: 2,633
Thanks: 1
Thanked 35 Times in 34 Posts
Feedback Score: 0 reviews
The voltmeter will always read low for the first 1-2 minutes; that's the glow plug run time. After that, it shouldn't cycle. It _might_ be worth trying this test - warm the engine up, then shut it off and disconnect the glow plug relay. Then start it back up and see if the voltage still cycles up and down.

No tach on the van dash, correct?
Reply With Quote Quick reply to this message
  #4  
Old 04-25-2013, 08:15 AM
Member
 

Join Date: Mar 2013
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have yet to check the connections on the alt...hard to get to in the van but on the list to do. I have a brand new cps to put in but have not found any diagrams on the location of it.

I will def try the glow plug relay test. Correct...no tach on the van.

Thanks,

Jarrett
Reply With Quote Quick reply to this message
  #5  
Old 04-26-2013, 03:51 PM
Member
 

Join Date: Feb 2011
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
If I remember correctly, the CPS is located in the block right behind the harmonic balancer. There will be a wire(s) connected to it and a single bolt holding it in place. If you can't see it, with the engine off, just feel the block all the way around behind the HB for a wire going to it. I think it was a 9/16" or 5/8" bolt holding it in place. As far as the battery gauge jumping around, I would imagine it has to be between the battery cables, connections and alternator. Unless there is a loose connection going to the gauge itself.


Sent from AutoGuide.com App
Reply With Quote Quick reply to this message
  #6  
Old 04-30-2013, 04:34 AM
Member
 

Join Date: Feb 2011
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Just saw an old reply of mine right after I changed my CPS. It's a 10mm bolt holding it in place.


Sent from AutoGuide.com App
Reply With Quote Quick reply to this message
  #7  
Old 04-30-2013, 06:47 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 1,542
Thanks: 0
Thanked 16 Times in 16 Posts
Feedback Score: 0 reviews
When my voltage was fluctuating on my truck (not constant, but intermittent) it was the alternator or more precisely, where the brushes contacted the slip ring tracks. Cheers!
Reply With Quote Quick reply to this message
  #8  
Old 05-01-2013, 09:01 AM
Member
 

Join Date: Mar 2013
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks guys...got the CPS changed out last week and so far no random dying.

I have still yet to figure out the battery issues. I can run it all day and it starts fine but let it sit 2 days and the batteries are dead. I am guessing maybe a short somewhere. It is an ambulance so there are more than enough wires running around to cause an issue. Somebody took the siren and lights off so i will start with where those used to be. But i would think it has to be something big pulling lots of juice to drain 2 batteries in 2 days. I checked all connections to the alternator and looked good.

On another note...the horn doesn't work. I can hear the relay clicking though. I changed the relay out and still no go. Pulled the horns and direct wired to battery and they work fine. Just no horn when pushing on the steering wheel.

Also the flashers only work on the left side. Even the indicator dash lights only show the left blinking. But the turn signals work on both sides and even show it on the dash indicators. I changed all the bulbs front and back but no go yet.

Any ideas???

Thanks,

Jarrett
Reply With Quote Quick reply to this message
  #9  
Old 05-01-2013, 09:50 AM
Compression Ignition Addict
 

Join Date: Aug 2008
Location: Madison, WI
Posts: 2,633
Thanks: 1
Thanked 35 Times in 34 Posts
Feedback Score: 0 reviews
Flashers issue sounds like the switch. IIRC, there are separate sets of contacts in the switch for left and right side. Both our '95s do that every now and then. Usu. I hit the switch again and it's fine, so I figure it's just the contacts need cleaning.

Horns - gotta be the wiring between the relay and the horns; that's all that's left.

Battery drain - could be some other ambulance accessory, hidden behind a panel somewhere, not decommissioned. Are there separate fuses for the ambulance bits? You'll need a voltmeter with a fairly high capacity in the current range. Disconnect both battery negatives, then connect the meter, set to the highest current (amperes) rating available, in series between the negative terminal and negative post of one of the batteries. It will prob. show some significant current flow. Then start pulling fuses until the current reading drops. Start with the fuses associated with the ambulance accessories, if there are separate ones. Another common one is the alternator itself. Do the same meter connection, then unplug the small connector on the top of the alternator and check the meter.
Reply With Quote Quick reply to this message
  #10  
Old 05-01-2013, 11:01 AM
Member
 

Join Date: Oct 2011
Posts: 88
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 10:57 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors