Stutter
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Tuned
Joined: Jun 2008
Posts: 266
Likes: 7
Stutter
Recently my truck has developed a stutter between 1600 and 1900 rpm's. It is just a split second and doesn't jerk the truck or anything, but is noticeable. Doesn't do it on acceleration. When I put the chip on stock setting it is still there but not as noticeable. Fuel pressure is great. Changed the cps and I thought it was fixed, but 100 miles later it was back. Where do I go from here? I've never personally had the valve covers off so don't know what shape the harnesses and clips are in.
Got Data?
Joined: Dec 2012
Posts: 4,267
Likes: 1,403
From: Lake Stevens, WA
How many miles on your truck at this point? When the harness's start to move, it's pretty dramatic, with rough running and a check engine light. That's how mine went anyway.
Some searches on here for your problem of a stutter or miss at those rpms point to an IPR valve that needs a cleaning/rebuild. Another culprit if miles are getting up there is an injector is starting to go. A cylinder contribution test might reveal the bad stick.
It would be good to get a scan of the codes and run the CCT and see what the results are.
Some searches on here for your problem of a stutter or miss at those rpms point to an IPR valve that needs a cleaning/rebuild. Another culprit if miles are getting up there is an injector is starting to go. A cylinder contribution test might reveal the bad stick.
It would be good to get a scan of the codes and run the CCT and see what the results are.
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Tuned
Joined: Jun 2008
Posts: 266
Likes: 7
ran cct and buzz tests, no codes have popped up. icp plug clean as a whistle
It occurs to me that this has been happening when the truck is warmed up, and on warmer afternoons.
I read where several have said that changing oil has cured a problem such as this. I have been changing around 5,000 miles and when I checked my records I am right there, so I'm going to do that before going further.
It occurs to me that this has been happening when the truck is warmed up, and on warmer afternoons.
I read where several have said that changing oil has cured a problem such as this. I have been changing around 5,000 miles and when I checked my records I am right there, so I'm going to do that before going further.
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