• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Engine hesitates and stumbles intermittently

  • Thread starter Thread starter spoulson
  • Start date Start date May 6, 2010

spoulson

Member
Nov 3, 2009
76
0
7
Middletown, DE
May 6, 2010
#1
  • May 6, 2010
  • #1
I was hoping someone might've experienced this and knew a few things I could check.

Recently, my car started developing this hesitation that seems to be slowly getting worse. Mostly, it happens after a cold start and intermittently within the next 10-15 min of driving. For a few seconds at a time, the engine will feel to lose power and then snap back to normal, sometimes repeating 2 or 3 times. At idle, the engine will drop to ~500rpm and barely stay running. At cruise, it will simply lose power as if I let off the gas. While accelerating hard, it feels like fuel cut, throwing me towards the wheel.

Sometimes when this happens, the check engine light comes on then off. I checked codes and only got this code and I'm not sure what to make of it. In fact, this code had always shown up for as long as I've owned the car (last Aug). Not sure if the big cam causes low vacuum, triggering this code.
32 - EGR Valve Position/Pressure Feedback EGR Voltage Below Closed Voltage.

If I try to hold the accelerator down during a hesitation, I often hear popping from the engine. I'm not sure if it's out the exhaust or up the intake. I only really hear it from the right side, so I'm thinking intake.

In the last 6 months I've installed a new Mallory TFI distributor, Mallory coil, plugs/wires, and new battery. Mods are in my sig.

I'm not sure what to check. Any suggestions?
 
You must log in or register to reply here.

Similar threads

I
98 Mustang GT dying
  • ItsMason
  • May 14, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
3
Views
76
1996 - 2004 SN95 Mustang -General/Talk- Thursday at 9:50 AM
lenzgt
L
P
Repeated P2004 DTC trouble code with no apparent symptoms
  • poehitman
  • Mar 11, 2026
  • SN95 V6 Mustang Tech
Replies
2
Views
161
SN95 V6 Mustang Tech Mar 12, 2026
poehitman
P
K
Electrical 2000 GT Intermittent Engine Shutdown In Motion - DTC U1262
  • kenster1092
  • Apr 13, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
157
SN95 4.6L Mustang Tech Apr 24, 2026
squeak93
P
Engine Mysterious coolant leak at back of engine
  • palerider94
  • Jan 18, 2026
  • Fox 5.0 Mustang Tech
Replies
1
Views
174
Fox 5.0 Mustang Tech Jan 19, 2026
AeroCoupe
P
2000 GT Random Power Loss
  • Pinellas50
  • Mar 9, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
248
SN95 4.6L Mustang Tech Mar 23, 2026
Pinellas50
P
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?