Technical Questions and Discussions

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4.9 ECM

Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Technical Questions and Discussions
Forum Description: Got a technical question about your fiero? ask it here.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=2424
Printed Date: 25 April 2025 at 8:13am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: 4.9 ECM

Posted By: orange
Subject: 4.9 ECM
Date Posted: 25 April 2011 at 4:01pm

I switched out my ecm with another one i got at the junkyard and it was
inside so there was no water damage. When i swapped ecms i could tell
something was different, it seemed to pull a little harder and it was
smoother on accel and decel. But the new ecm was really rough when
cruising down the alley in 1st going 5-10kph. And when its warm and idling
at 600ish the new ecm makes the cam a LOT more prevalent than the old
ecm did at idle. I checked part numbers for both ecms and they are the same
(161...something) and i switched my prom when i switched ecms. So why are
they different? is one bad? Oh and my old one (not junkyard) was
remanufactured and the new one is an original. Just trying to figure this out.

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Orange 4.9

Replies:

Posted By: orange
Date Posted: 28 April 2011 at 9:52pm

Anyone?

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Orange 4.9