dungle262
New Member
- Joined
- Oct 4, 2022
- Messages
- 9
- Reaction score
- 0
- Points
- 1
- Location
- Washington
- Vehicle Year
- 1989
- Make / Model
- Ford Ranger XLT
- Transmission
- Automatic
I'm having problems with my 2.9L v6 ranger idling at stops and low speeds, this is my first truck and I barely know anything about engines. Once it's warned up in cold or warm conditions it tends to surge and shake very aggressively. the shake happens on every low end of the idle fluctuations and feels the same as turning your car off and the engine jolts. at first Start its fine sitting at 1600-1700rpms and once warmed it sits at 900rpm to which the surging starts. this was just and old farm truck before me and only has 139k miles on it. So far I've replaced the IAC valve with a motorcraft one and same with the fuel filter(also motorcraft). I replaced the MAP sensor a few days ago and that's when the shaking got more aggressive. I'm just trying to learn and be able to fix this issue bc I believe she's got alot of life left in her I just need to fix this surging. I used to have a problem where after getting home from work when I shifted into park the engine would bog down and die. this issue randomly disappeared but the surging has always been there, the surging has actually gotten worse sense then. I've seen threads suggesting vacuum leaks and possibly clogged injectors, when I first had the truck it was sitting awhile so I put 1 and 1/2 bottoms of seafoam through it to getting going again(split between 3 different gas fill ups). I'm just hoping for suggestions at this point, thanks. (edit, I tried posting videos but it's saying the file size is too big)
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