Fiero Loses power under Load
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=3696
Printed Date: 24 November 2024 at 2:11pm
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Topic: Fiero Loses power under Load
Posted By: Mumbles
Subject: Fiero Loses power under Load
Date Posted: 20 November 2015 at 5:09pm
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Hello, Yesterday while driving my fiero lost power under load and seemed to stumble. This problem is evident both at high speed and at low speed. There is a small exhaust leak near the EGR but no other known mechanical problems. Any idea what the problem could be? Idle sounds normal and is just below 1k, slight whirring sound is present while maintaining revs at about 3k. Car is an 88 with the V6 and Three speed auto. https://youtu.be/Q_noTIUjSgo Thanks! |
Replies:
Posted By: ARTIC-1
Date Posted: 20 November 2015 at 9:09pm
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I had a simaler problem,turned out to be the connection at the coil,I looked at Your Vid,an judging by your Tac just dropping off like that,I would check all Plugs connection in the motor Well,it's a start,hope this helps.good luck. ------------- SNOW MAN 87-GT/AUTO-2.8_ WHITE 88-TTop/ Duke-2.5. RED |
Posted By: beken
Date Posted: 21 November 2015 at 3:20pm
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Also check for all your vaccuum hoses for any cracks or leaks. Also check your fuel supply. Make sure your car is not starving for fuel flow. Fuel filter should be replaced every few years. I have never had a GM fuel pump last more than 10 years on any GM car with an electric fuel pump. Hope that gives you some places to start. -------------  Beken (aka Ken) - bekentech@westcoastfieros.com Original and still the owner of an 85SE 2M6 4spd |
Posted By: Dr.Fiero
Date Posted: 22 November 2015 at 6:12am
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Yeah, the fuel filter is always a good idea, but.... since the tach snaps down like that, it seems more ignition related. The list is... well... long. Shorting tach filter Failing ignition module (lets face it - super common!!) Coil wire connector dying Ignition coil failing Problem is, until it DIES, it's really hard to trace an intermittent. |
Posted By: Fieroman88
Date Posted: 22 November 2015 at 7:15pm
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If you own a Fiero you should be carrying a complete distributor and coil as a spare. O'Rielly Auto Parts in Bellingham is the best place to get one as, the distributor with a lifetime warranty at like $125 us. Much cheaper than what you can buy in Canada. I had the same problem last year and changed that out to resolve the whole thing. Trick is make sure you put it back in the same position when you pull it out for timing reasons. ------------- Fieroman88 |
Posted By: Mumbles
Date Posted: 23 November 2015 at 7:57am
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Thanks for the Suggestions guys, I have a whole list of things to check now haha. one thing I noticed is my dizzy is very corroded, but the internet seems split as to if this is normal and to be ignored or something to try cleaning / replacing. What do you think? Unfortunately i'm not sure how to post pics on here. Thanks, Ryan |
Posted By: Mumbles
Date Posted: 29 November 2015 at 6:03pm
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Thanks for the help guys, turned out it was the ignition module. Once that was swapped out its been running great. |
Posted By: beken
Date Posted: 30 November 2015 at 10:16am
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Good know you have it under control and are back on the road. Hope to see you around on the road soon. ------------- Beken (aka Ken) - bekentech@westcoastfieros.com Original and still the owner of an 85SE 2M6 4spd |
Posted By: Fieroman88
Date Posted: 30 November 2015 at 1:43pm
| Great to hear that. Don't know where you're located but hope you can make a meeting someday. Always welcome. |