Need help solving following problem: Van in2nd gear at around 3200 rpm, experiences uneven power, a kind of surging; not pronounced but noticeable. Other than at this point, the van runs & idles perfectly both when cold and warm.Disconnecting the 02 sensor eliminated the problem altogether. I subsequently replaced the 02 sensor with a new oem one but this did not solve the problem. The AFM is new & meets spec. The throttle switch has been adjusted to spec. The coolant sensor meets spec. (tested when cold -- coolant at 50 farenheit). What's left? Vacuum leak? Fuel pressure, pump or clogged filter? Any ideas much appreciated, yann buchanan ynb@att.net 87'wolfweekender |
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