putts but never stalls out?

1995 CHEVROLET
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M_SCONIE82
  • MEMBER
  • 1 POST
I have a 1995 chevrolet c/k 3500 dually, with 7.4L gas engine.'The truck starts great, idles great, but sputters when driven.I have changed every sensor, all vacuum hoses & the fuel pump.I need a new lead! what could it be?

Truck sputters & putts but never stalls out. I have changed every sensor on the truck. I have changed the fuel pump.
Apr 30, 2012 at 11:03 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
if this has small intake bolts, see if they are loose and retorque them. also clean the throttle plate on both sides with choke cleaner as well as the iac hole. scan for codes and check plugs and wires as well as dist cap for carbon arcing or breaks.
Apr 30, 2012 at 12:17 PM
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