HELPPPP! runs rough
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Freshman User
Joined: Oct 2007
Posts: 47
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From: Michigan
HELPPPP! runs rough
i have an 88 f250 351w c6 trans. it recently begun running rough on me. i have checked the timing, its 10btc and the shorting bar is doing its job, map sensor is good, put a new o2 sensor in it, did a bg fuel injection cleaning, replaced spark plugs, wires, cap and rotor(all motorcraft) however it has long tube headers in it. the egr isnt hooked up it has a block off plate where the egr used to be at. it has a very small vacuum leak between the throttle body and upper intake. every once in a while once its warmed up it will idle alot better but not perfect. the o2 is only on one bank because it has no y pipe its true dual. has new fuel pump, pressure tests good. fuel regulator also tests good. but if i pull the vacuum line off the regulator it will run better. but not perfect once again. could this small vacuum leak be the cause of my whole problem? cus ive been leaning towards the pcm not pulsing the injectors correctly. any help is greatly appreciated
Thanks!
Thanks!
Elder User
Joined: Jun 2010
Posts: 568
Likes: 0
From: Northern IL
After I got my truck back from the trans shop, I had bucking and jerking while just cruising the highway at 60-70mph.
I'm thinking when that sensor goes, the problem was a little different but basically the same to each person.
I'm thinking when that sensor goes, the problem was a little different but basically the same to each person.
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