I've got the same tach problem in mine. Sometimes it will idle about 200
rpms lower than it should. I've noticed no change in engine speed at all
though. I can even watch it going down the highway doing 65. Some days the
thing will jerk down 200 rpms, stay there for a while, and then jerk back
up. I'm almost positive this is a wire/gauge problem----not an engine
problem.
On a related subject - can anyone else run 70mph down the highway and only
run 2000 rpms? I think my 31" tires are the reason for this--not that I'm
complaining. I've gotton upwards of 23mpg on road trips.
--Aaron--
95 DSRC 4x4 V6
>Jon Smith wrote:
>
> > I've been watching my tach closely lately, it'll idle down around
>400rpm,
> > but the motor sounds closer to 650-700rpms.. and if i gently raise the
>revs,
> > the needle starts to jerk a lil bit as it rises.. I'm guessing that the
> > tach pickup is run off the crank(or cam?) positions sensor... could this
>be
> > a sign of it going south?
> > ____________________________________________
> > Jon Smith-Raleigh,NC-http://www4.ncsu.edu/~jdsmith4
> > '95 318 auto CC 4x4: Accel Supercoil, JBA headers,
> > dual glasspack, 14x3 FABM, F&B Stage I TB, !EGR,
> > MSD 8.5's, self-moded intake, 180 degree thermo,
> > ASP crank pulley, 16" Hayden elec. fan, MP SBEC,
> > BEST: 0-60 in 6.3 & 1/4mi 15.4@88.95
> > 207.2 RWHP, 276.2 RW ft/lbs
> > ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
>
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