[97Formula]

Hello, still seem to experience this cold start where the engine revs "surge" once briefly before staying at 1200RPM (goes to 1100RPM upon cold start, then 800 for a brief second, then back to 1200RPM until warm, when it goes back to 800-900RPM). Used to rev up to 1300-1400rpm briefly before dropping to 1200rpm when cold. Warm starts still normal (rev up to 1300rpm, then back to 800-900rpm (warm idle). This occurred before and after new fuel pump and fuel filter, as well as cleaning TB and IAC. Tried a different MAF and nothing changed.

Because I've been watching things closer now, I happen to notice a brief "mechanical" sound when the engine fires up (hopefully it's just the ABS module kicking in upon startup). The noise only lasts a split second, (warm or cold), but still have that slight surge of RPMS on cold start. Engine seems mechanically sound (hasn't been ticking as much, if at all lately).

Maybe I'm worry about nothing, since it still runs great (especially since getting the new fuel pump).