Technical Questions and Discussions

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i am in a pickle lol

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=1661
Printed Date: 21 November 2024 at 6:13am
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Topic: i am in a pickle lol

Posted By: 3.1fiero
Subject: i am in a pickle lol
Date Posted: 06 January 2010 at 4:05pm

Hey everyone Happy New Year and all the best!

Now to get to it. I ran into a little problem with my fiero and am having some problems figuring out what is going on with it. The car is running extremely strange! When you fire it up sometimes it idles perfect and others it needs to be kept running while warming up, also it will jump around while on idle as if the computer things it needs to run as it is cold then deciding that is it at operating temperature. Sometimes it will run on all 6 then others drop a cylinder or two. If anyone has had this problem or has an idea that would be greatly appreciated. I have checked many things but just a little stumped :)

Im running a 3.1l with 2.8 heads and all the 2.8l sensors aswell as the fiero plenom.

Thanks very much :)

Replies:

Posted By: Dawg
Date Posted: 06 January 2010 at 9:19pm

We have the same motor.

It really sounds like distributor trouble to me. Does your tach jump up and down eratically while the engine is changing RPM? If so, it's the speed sensor (pickup coil).

I can help you with that. PM me if interested.

DG

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You dream it up....I'll make it

Posted By: 3.1fiero
Date Posted: 07 January 2010 at 10:18pm

i just replaced my O2 sensor and it has been running great now lol. thanks very much, im gonna take her for a drive tomorrow around town and see if anything strange happens.

Posted By: Capt Fiero
Date Posted: 07 January 2010 at 11:37pm

Go over all your ground wires, grounds explain alot of what you say is going wrong. If the O2 sensor ground harness is going bad, it will show as a bad O2 sensor on any questionable O2 sensors. If you are at the meeting on Saturday come find me and I'll show you the ground points on the harness.

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Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.

Posted By: 3.1fiero
Date Posted: 16 January 2010 at 4:36pm

I was wondering if i would be able to meet up with you to show me the ground points so i can know for the future. I have no wiring diagrams at all and that would be an amazing help. Thanks very much :D