Drop in RPM on Freeway... Ideas?

[rdeede@hotmail.com (Richard Deede)]

If the car had been running fine and then you made a change to the car, then 
the car does not run the same as before, that would lead me to believe that 
the problem is due to the change you made. Im betting the car is not liking 
those +4's you put in. Im not surprised, I've never heard anyone on the list 
saying they have had success with this plug. I'd switch plugs.

Rich


>From: "Tyler Pease" <uberzip@attbi.com>
>To: "'List'" <scirocco-l@scirocco.org>
>Subject: Drop in RPM on Freeway... Ideas?
>Date: Thu, 27 Jun 2002 06:50:47 -0700
>
>I was driving today to work and my car was running very nice.  I was
>doing about 75 going up I-5 and all the sudden my car had this huge
>pause and my rpms dropped from about 4000 to 3000.  I was not
>accelerating while doing this, I was just maintaining speed and maybe
>even slowing down as the freeway was getting a bit crowded.  This only
>happened for about a second and then everything was fine and my car
>drove great the rest of the day, I even took it to 90mph without any
>trouble.  At first it felt like when my radiator hose busted off a few
>weeks ago, but my radiator is fine and all my coolant is in the car.
>The only thing I can think of is a problem with the spark plugs.  I put
>new bosch platnum +4's in the car last night and its run better since
>but maybe this is a problem due to that.  Another possibility is maybe a
>problem with the cat because my car has run rather rich this past year
>and that may be going bad due to running rich.  I thought I could smell
>a little bit more raw fuel than is usual when my rpm's dropped but its
>hard to tell on the freeway.


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