when cruising along at a staedy speed,engine starts pulsating any clues to what it might be? im told maybe a door inside the intake manifold maybe sticking. any help would be appreciated

It could be a sticking intake manifold flap or bad injector(s) or a combination of the two. I would start by dumping some injector cleaner in the tank if you haven't done so already and taking the crossover pipe off and cleaning and lubing all the flaps.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

Buck,

Do a search for "surging" you will find lots of information. I had that problem and it ended up being a clogged intake with stuck flaps. Its pretty easy to take apart. Are you getting the Check Electronics Message?? I had the surging without it for awhile when it got bad enough then the message came up. Where are you located?

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Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD

yes i am getting check engine / electronics message. located in buffalo ny