Question about GMC Sonoma

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Sonoma skips when maintaing speed

I have a 1997 sonoma 4.3L v6 it skips real bad when going 50 mph and maintaing that speed if you give it gas or let off of the gas it runs fine i have changed plugs and wires and checked the fuel pressure and still having this problem please help

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  • GMC Master
  • 80,668 Answers

What do you mean by "skip"?

Posted on Mar 21, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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motor1258
  • 6674 Answers

SOURCE: 1992 jeep cherokee rough idle

Check, clean EGR valve & see if that helps.

Posted on May 08, 2009

  • 141 Answers

SOURCE: bad stumble on acceleration pops through t- body.

Sounds like the fuel pressure regulator. Could also be that the timing jumped. But I'm leaning towards the pressure regulator. Hope that I could help. Best wishes.

Posted on Jan 17, 2009

emissionwiz
  • 80668 Answers

SOURCE: engine runs rough at certain speeds 3.0 v6 flex-fuel 1999 ranger

Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..

Posted on Nov 23, 2008

  • 15483 Answers

SOURCE: my 99 gmc sonoma wil start and drive fine untill i

if no codes yet check and clean egr valve ,pcv valve,air filter and/ fuel pump and pressure regulator may b dropping under load

Posted on Oct 27, 2009

Molson02536
  • 3854 Answers

SOURCE: Starts fine, but then bogs out when accelerating,

Check the fuel pressure regulator and the EGR valve, I would check the fuel pressure regulator first and go from there. Good luck and keep me posted. Not sure what the pressure should be but thinking it's 62 to 65 PSI upon start up and should drop 5 PSI when engine running, check the vacuum line to the regulator.

Posted on Dec 09, 2009

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