Re: V8-Surge betw 2K and 4k rpm

[Randall Markarian <asenna@accessus.net>]

Dick Krucker wrote:
> 
> Help, I'm making Nortland Audi rich. They have helped me out by working
> on a # of problems:
> 1) Replaced Ox Sensor under EPA warrant Car 91 V8 has only 34,000 miles
> 2) also replaced all 8 fuel injectors
> 3) Just replaced 'Speed Sensor" as they were getting Fault #28 all the
> time.(snip)
> 6) iI've run so musc fuel injector cleaner thru I might own Chevron..
>    I am at a loss to the problem. The tach seems to come to a stand
> still, then goes then stops till 4,000rpm then everythinh clears up and
> runs like aBanshee!!!!!!
> If anyone has any ideas I would welcome them...I sent the dealer one
> article that I found in the Archives about a loose wire between the ECU
> on the engine and the ECU on the tranny. He said he didn't think that
> they were connected, but would check it out. That was yesterday....

Well I am sure that there are several of us V8 owners out here that
could tell you some stories about finding the surge.  And I tried for
months to solve it myself.  The O2 sensor provided some relief from the
surge, but it did not cure a more subtle surging that occurred until the
engine reached the higher RPM range as you described.  But recently I
put a chip in my car and that cured it.  Also talked to Ned at IA and he
claims his chip solves this nasty little problem.  So it may be that an
aftermarket chip might do you some good, but YMMV.
-- 

Randall C. Markarian

1990 V8 Quattro
1996 Merc E320

Saint Louis, Missouri