95 5.0 sputter/backfire - MustangForums.com

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

95 5.0 sputter/backfire

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Old 06-21-2011, 03:45 PM
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95mustanggt3025.0
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Default 95 5.0 sputter/backfire

I have a 95 mustang 5.0 that around 2-3 thousand rpm stutters and stumbles under light throttle but under full throttle is fine anyone else have this problem?
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Old 06-21-2011, 04:28 PM
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mattdel
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If the check engine light briefly makes an appearance during the stumbling, start looking for a EGR position sensor problem.
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Old 06-21-2011, 06:08 PM
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lxman1
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Have you checked for codes yet? That's where I would start.
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Old 06-21-2011, 11:23 PM
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95mustanggt3025.0
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only codes i get are cooling fan relay failure. and o2 sensor lean on right bank. Check engine light comes on when i set the cruise. or hold the throttle steady
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Old 06-22-2011, 09:21 AM
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AdderMk2
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Originally Posted by 95mustanggt3025.0 View Post
only codes i get are cooling fan relay failure. and o2 sensor lean on right bank. Check engine light comes on when i set the cruise. or hold the throttle steady
GT's running lean will spark knock... it a sad side effect of the 55 of timing that the ECM tries to use at low loads.

clean your maf, do a tune up, set your timing to 10BTDC, and replace your O2 sensors.
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