I had a similar problem in the Vegas area, and I changed the fuel filter
in a casino parking lot (while sand was blowing in my face).  This didn't
cure the problem, and I thought it might be the AFM.  However, someone
suggested vapor lock, and once I left the interstate, slowed down a bit,
and went to slightly cooler temperatures, the bucking stopped (and hasn't
returned since).

David

On Tue, 28 Sep 1999, William Wedenoja wrote:

> Neil Wigley wrote:
> > Back from two weeks around the Four Corners and SE Utah; wonderful
> > time of year to see wonderful countryside + wonderful camping.
> > On the return trip bought a cheap tank of gas in Tuba City AZ (yeah
> > yeah I know). Afterwards, car seemed to have less power than normal,
> > but what do I know, high altitude, etc. Got suspicious when passed by
> > an RV pulling a car. Then after a couple of hours it started acting like
> it was missing. So I tanked up, this time with Chevron + Techron (ta-dah!).
> Improvement..... Now what is the cause of all this? After resting it's fine
> for a
> > while, then gradually loses power as time goes on.
>
> We had a similar problem in mid-August.  Stopped for gas in Palm Desert,
> headed east on I-10 towards Blythe.  The van would occasionally "buck"--as
> if it were starved for fuel.  Each episode would last only seconds.  Then
> it'd be ok for 10-30 minutes, and do it again.  Got progressively more
> frequent though.  I thought we'd have to seek help in Blythe (of all
> places).  But remembering that the PO said it was sensitive to bad gas, we
> just filled up with high octane Texaco, after which it "bucked" a couple
> times more then quit for good.  BTW, the fuel filter had been on for about
> two months and 8000 miles.
>
> Can anyone tell me for certain that this was a case of bad gas?  Or (groan)
> a sign of impending destruction?  Or maybe just the curse of the Mohave?
>
> Bill
> 88 westy
>