Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 
 


Reply
 
Thread Tools Display Modes
 
Old 07-31-2016, 11:57 AM   #1
New Member
 
Join Date: Jul 2016
Location: Massachusetts
Posts: 3
Default 1987 b250 no start

Any idea what would allow cranking and downstream power, but cut power to the dash gauges and prevent a start?

From what I've read, could be ASD or isolator failure. Only reading 7v across the secondary battery terminals regardless of how the isolator switch is positioned.
ivandrocco is offline   Reply With Quote
Old 07-31-2016, 12:05 PM   #2
BBQ
Platinum Member
 
Join Date: May 2016
Location: East
Posts: 2,483
Default

Quote:
Originally Posted by ivandrocco View Post
Any idea what would allow cranking and downstream power, but cut power to the dash gauges and prevent a start?

From what I've read, could be ASD or isolator failure. Only reading 7v across the secondary battery terminals regardless of how the isolator switch is positioned.
You have a dead battery?
BBQ is offline   Reply With Quote
Old 07-31-2016, 01:19 PM   #3
New Member
 
Join Date: Jul 2016
Location: Massachusetts
Posts: 3
Default

...on Jumpers. I think it's a faulty isolator or ASD?
ivandrocco is offline   Reply With Quote
Old 07-31-2016, 01:32 PM   #4
Platinum Member
 
Join Date: Aug 2010
Location: Minnesota
Posts: 11,918
Default

Quote:
Originally Posted by ivandrocco View Post
Any idea what would allow cranking and downstream power, but cut power to the dash gauges and prevent a start?

From what I've read, could be ASD or isolator failure. Only reading 7v across the secondary battery terminals regardless of how the isolator switch is positioned.
Depending on how they have it wired, it could be the ignition switch not connecting in the "start" position to the dash and ignition systems. When this happens (at least with carburetor vehicles), some will actually start if you crank them for a bit then let off the key to the run position. They will then have enough fuel and momentum to fire when the run position gives spark.
booster is online now   Reply With Quote
Old 08-01-2016, 03:20 AM   #5
Platinum Member
 
Johnny R's Avatar
 
Join Date: May 2010
Location: Alberta, Canada
Posts: 207
Default

How about a problem with the the Ignition control module.
__________________
Johnny R
1990 Dodge Leisure Van - great camping
2006 Goldwing - terrific two-up riding
2011 Malibu LT - wonderful winter wheels
Johnny R is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 02:09 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.