ECM computer ?bad? - JeepForum.com
 
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post #1 of 4 Old 09-19-2013, 07:10 PM Thread Starter
BeDifferent
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1995 ZJ 
 
Join Date: Nov 2012
Location: Powell
Posts: 107
ECM computer ?bad?

is there a way to quickly tell if it is bad?

running "funny"
remembered about pull and replace fuzes to re-establish a good connection,
remove and replace ECM, seems to run much better -- for a couple of hours.

noticed while I had it out that as I moved it around I could a hear something sliding around inside.
is that normal?

now key on = lights, dash, (battery is well charged) but no start/ starter not even click.

could this be ECM?
or BOTH = ecm and something else too.


Jeep Grand Cherokee 1995 v8 5.2 205000
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post #2 of 4 Old 09-19-2013, 08:04 PM
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Posts: 8,550
Quote:
Originally Posted by BeDifferent View Post
is there a way to quickly tell if it is bad?
no

Quote:
Originally Posted by BeDifferent View Post
running "funny"
tell us exactly what is sounds like so we can have a chuckle

Quote:
Originally Posted by BeDifferent View Post
remembered about pull and replace fuzes to re-establish a good connection,
a good strategy

Quote:
Originally Posted by BeDifferent View Post
remove and replace ECM, seems to run much better -- for a couple of hours.
so, you put an ecm in and it did the same thing?

Quote:
Originally Posted by BeDifferent View Post
noticed while I had it out that as I moved it around I could a hear something sliding around inside.
is that normal?
no

Quote:
Originally Posted by BeDifferent View Post
now key on = lights, dash, (battery is well charged) but no start/ starter not even click.
need more info

Quote:
Originally Posted by BeDifferent View Post
could this be ECM?
or BOTH = ecm and something else too.
yes

Click link below and read the no start part.
Then come back and give more symptoms
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post #3 of 4 Old 09-19-2013, 08:44 PM
AnotherRedZj
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1996 ZJ 
 
Join Date: Feb 2012
Location: fort walton beach
Posts: 2,345
Listen to this guy^^^^^

Take time reading the WHOLE link.

Or Jus stop distracting him from my problem!!!!! Jk.....lol

96 ZJ sittin up 6" on 35's with 4:56's and a 12k winch. Cuz...why the hell not!?
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post #4 of 4 Old 09-19-2013, 09:05 PM Thread Starter
BeDifferent
Registered User
1995 ZJ 
 
Join Date: Nov 2012
Location: Powell
Posts: 107
Quote:
Originally Posted by BeDifferent View Post

remembered about pull and replace fuzes to re-establish a good connection,

remove and replace ECM, seems to run much better -- for a couple of hours.
removed and replaced the same unit, just to check and clean the contacts.


will be installing a rebuilt one this weekend, will post result.

Jeep Grand Cherokee 1995 v8 5.2 205000
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