Hi Greg,

Have you checked the fuel system? If the vent lines on the tank are
capped off, the tank will build up a vacuum and that could cause a
fuel pressure problem.

The other possibility is a wiring issue... Check the connections at
the ECU and the coil.  A bad coil can cause power loss under high
load conditions but still work fine at idle and lower speeds.

Happy Trails,

Greg Potts
1973/74/77/79 Westfakia "Bob The Tomato
www.pottsfamily.ca
www.busesofthecorn.com

On 18-Apr-07, at 5:00 AM, Greg Marshall wrote:

> Okay folks, I can't figure this one out.
>
> I was driving along the other day nice and smooth, then got on the
> highway.  Put the pedal down, went thruogh the gears, and the van
> stalled out on me at 4th.  I pulled over, started it up, merged
> back on the highway, and the van had no juice.  It felt like it was
> only running on three cylinders.
>
> I limped home, and went through everything.  The engine appears to
> be in tip top shape.  It starts quick and easy, has compression,
> fuel, spark, etc. and sounds just like it always has.  I don't
> think it's an engine issue.
>
> I checked all four breaks next, and all the wheels spin smooth.
>
> I considered a fouled exhaust, but my system is a straight
> heaterbox to header setup with no cat. I can't imagine what could
> go wrong with it.
>
> Is there some kind of transmission/clutch/CV issue that could be
> causing this?
>
> Any suggestions?
>
> Thanks,
> Greg
> 82 Westy