Dropping Tachometer?

Question

All,I own a 2003 Pontiac Aztek.  At one time, I owned a 1996 Grand Am GT with a3.1L V6.  It's odd that in both vehicles that I've noticed the same quirkybehavior.  As I'm cruising down the road and let off the accelerator to coastalong, I noticed the tach will drop from about 2000 RPMs to 750 RPMs andfinally bounce back to around 1500.  Is this normal Pontiac behavior?  I'veowned several cars over the years and have never noticed this bounce in 2Dodges, 1 Chevrolet, and 2 Oldsmobiles.  Anyone else notice this?Thanks,Jeremy

GAIntrigue · Accepted Answer

Yes, it could be part of my driving style, and I would expect for the engine todecelerate.  The engine speed drops to where it feels like it's going to stallout before it jumps back up.  I'm waiting for my car to completely die one daywhen I'm slowing down to a stop.

Max · Answer

I think this may be more due to your driving style than the tach itself...As I can discern, is you are letting off the gas while driving, so there should be rpm drop, right, and then it either downshifs or you get back on it sort of, and rpm goes up? (I drive stickshift always, so bear with me...)GA

Dropping Tachometer?

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