I have been having problems with steady idle, intermittent, and usually after the van has been running at high speed for at least 30 minutes. At idle, the van will rev up to around 1400--1600 RPM and then drop down to normal, slowly rise again and then drop back down. I replaced the coolant temperature switch for the ECU, and this seemed to fix the problem for a week or so, only to have the condition return. I have generally set my timing a little bit advanced (I think this is advanced--mark to the LEFT of the engine seam). I tried setting the mark at the seam for a few days and the van seemed be unusually sluggish and the idle problem was much worse. I tried setting the timing last weekend back to the left again, only a bit further. Idle problems have completely disappeared--idle is much steadier than even the times when the condition was less apparent. The van is noticeably more powerful--especially on the low end, but also maintains 70 (and even higher) on the freeway very willingly. Side benefit is also the first time my van has EVER reached 21MPG in urban cycle driving. So what are the nasty side effects of timing my van this way? Maybe the pulley is marked improperly? BTW, I filled out a brochure request on the Passat web site for the new European mode--the book showed up at the office today--looks really nice, especially interested in the new 110HP TDI engine. Donald Baxter '85 GL Vanagon
_____________________________________________ Donald Baxter 405 Sixth Street, N.E. Atlanta, GA 30308-1636 (404) 874-3292 dbax@mindspring.com or (at work) dab1@jhk.com
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