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4CYC Surging by LJ73
Started on: 08-10-2003 10:11 AM
Replies: 5
Last post by: theogre on 08-10-2003 12:16 PM
LJ73
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From: Sault Ste. Marie, MI
Registered: Aug 2003


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Report this Post08-10-2003 10:11 AM Click Here to See the Profile for LJ73Click Here to Email LJ73Send a Private Message to LJ73Direct Link to This Post
Just pulled 87 fiero out of the garage
where its been for four years.
Did complete tune up,new EGR, new coils,
I have a problem maintaining a steady speed
below 45mph. The car surging up and down in speed?? any ideas
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wingman
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Report this Post08-10-2003 10:23 AM Click Here to See the Profile for wingmanClick Here to visit wingman's HomePageClick Here to Email wingmanSend a Private Message to wingmanDirect Link to This Post
is it giving any codes?check your IAC after sitting that long the carbon has probably harden,messing up the sensor.check all your vac lines,you might have a vac leak.
shane
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ralpy
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Report this Post08-10-2003 10:31 AM Click Here to See the Profile for ralpyClick Here to Email ralpySend a Private Message to ralpyDirect Link to This Post
Did you replace old gas in tank before starting. Could just be "gunk" from old gas in fuel system.
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LJ73
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Report this Post08-10-2003 10:40 AM Click Here to See the Profile for LJ73Click Here to Email LJ73Send a Private Message to LJ73Direct Link to This Post
I'm getting Code 25
On third tank of gas first with drygas
2nd with fuel system cleaner
3rd with drygas now at 1/2 tank
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wingman
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Report this Post08-10-2003 12:08 PM Click Here to See the Profile for wingmanClick Here to visit wingman's HomePageClick Here to Email wingmanSend a Private Message to wingmanDirect Link to This Post
code 25 is a bad MAT sensor,or bad sensor connecter.it could be as simple as a sensor change
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theogre
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Report this Post08-10-2003 12:16 PM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreDirect Link to This Post
read the 700 TBI article in my cave. It shows where the MAT sensor is.

You want the type with a plastic cage like shown in the DIS ignition article.

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No good ever came from dark and spooky. Norville "Shaggy" Rogers

The Ogre's Fiero Cave (It's also at the top of every forum page...)

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