High Idle

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=3580
Printed Date: 28 April 2024 at 11:19pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: High Idle

Posted By: Shawnwil
Subject: High Idle
Date Posted: 01 January 2015 at 5:40pm

Hello everybody. I have owned my Fiero for about a year and a half now. In that time I brought it back to life from a certain demise.

I was able to drive it a few times over the summer and just recently had it out for a couple of days. It is a 1987 SE V6 5speed.

The one issue that continues to elude me is the high idle. I can't seem to find any vacuum leaks. Car starts fine and is a blast to drive but the idle rarely drops below 1500 rpm.

Also I notice the last time I drove it the temp barley cracked 40 and interior heat was minimal. I suspected a bad thermostat but have not had time to take a look. Also it was a pretty cold day during the drive.

Any suggestions would be greatly appreciated.

Thanks

Shawn

Replies:

Posted By: Dr.Fiero
Date Posted: 02 January 2015 at 7:05am

Fix the thermostat first - then check for a cracked/broken
EGR tube. Very (!!) common issue.

Posted By: Fieroman88
Date Posted: 04 January 2015 at 10:54am

I wouldn't discount the IAC or idle air
controller,as I almost lost it searching
for the same issue, and luckily found it
to be the problem. The club can help you
with the scan tool we have. It will tell
you if it is working properly, or just
replace it and have piece of mind it isn't
it.

-------------
Fieroman88

Posted By: ARTIC-1
Date Posted: 04 January 2015 at 1:31pm

Hi All
I think every one that has had a Fiero has has this Fault
in one way or an other,me to and i just replaced Everything!
but even that didnt work,in the end i found it an a Vid on
Youtube help,not the best example but it works well,if you
no a smoker-LOL-the older guy with 5L Mustang.found mine
in 1 Min this way.it was-UNDER the Base of the -EGR,i replaced
the Upper gaskit,but there is X2 there, and a new EGR + a new tube,still HI/Idl. Smoker
found it real fast,You may have to get a.NIC Patch! for your Fiero after wards,good luck

https://www.youtube.com/watch?v=zMok2y05jNE

TUBE THIS

Finding Engine Vacuum Leaks With A Cigar

-------------
SNOW MAN

87-GT/AUTO-2.8_ WHITE

88-TTop/ Duke-2.5. RED

Posted By: Shawnwil
Date Posted: 09 January 2015 at 5:00pm

Thanks for all the tips. I had seen that video before using the Cigar to find vacuum leaks. I actually made my own little smoke can but did not find any leaks. I think I will start with the EGR Tube and EGR first. I will keep you posted.

Thanks

Shawn

Posted By: Fieroman88
Date Posted: 29 January 2015 at 4:55pm

Hey Shawn.. Could you let us all know how you made out, if
you have tackled the issue yet that is?
Regards

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Fieroman88