My van runs rough while in gear and sputters when accelerating, but idles fine in park. It has a 5.0 V-8 and 4 speed transmission. Any idea what could be going on?
Check the spark plug wire, and plug,s,then check the distributor cap and button.
If that was what's going on wouldn't it idle rough too?
No,if plug is fouled it will fire,just not at high rpm,s.
What about maybe the floats? If the carb was out of tune would it do the same?
It also idles rough at a stop while in gear but not park
Check the plug,s and your wire,s.
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