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2.5L Fiero 2m4 stumbling on acceleration by chrislayton
Started on: 10-28-2014 04:19 PM
Replies: 5 (153 views)
Last post by: Gall757 on 10-29-2014 05:10 PM
chrislayton
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Report this Post10-28-2014 04:19 PM Click Here to See the Profile for chrislaytonClick Here to Email chrislaytonSend a Private Message to chrislaytonEdit/Delete MessageReply w/QuoteDirect Link to This Post
I've got a 1985 Fiero 2m4 that runs nice and smooth at idle and up to 2000 rpm or so but then when you hit the throttle it hesitates and jerks but then at higher rpms seems to smooth out again. I'm new to this forum but was wondering if someone could help me begin the search for the problem.
When I'm at about 2500 rpm that tach just bounces all over the place (goes nuts)

[This message has been edited by chrislayton (edited 10-28-2014).]

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chrislayton
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Report this Post10-28-2014 09:26 PM Click Here to See the Profile for chrislaytonClick Here to Email chrislaytonSend a Private Message to chrislaytonEdit/Delete MessageReply w/QuoteDirect Link to This Post
It's looking more like the engine has a miss all the time but becomes more apparent during acceleration.
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Gall757
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Report this Post10-29-2014 07:47 AM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Welcome to the Forum!

Get a spray bottle with water and wait until dark. With the engine running, mist the spark plug wires and look for arcing. If that is OK, do a test on the ignition coil.

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theogre
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Report this Post10-29-2014 10:54 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
Try First, Disconnect tack filter.
See my Cave, HE Ignition

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chrislayton
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Report this Post10-29-2014 11:18 AM Click Here to See the Profile for chrislaytonClick Here to Email chrislaytonSend a Private Message to chrislaytonEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by theogre:

Try First, Disconnect tack filter.
See my Cave, HE Ignition


What's the tack filter look like or where is it found?
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Gall757
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Report this Post10-29-2014 05:10 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
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