When I'm decelarating at a stop light and come to a complete stop, my rpms go below 1k, which sort of causes a shake in the engine. Luckily the car does not stall though. Could this problem be caused by faulty spark plugs. I have about 46k miles and did the spark plug TSB at around 12k miles.


TIA.

 

Two things to try, and I'm surprised a veteran like you doesn't know this (no disrespect) but.......

1. MAP sensor whack. Where you take the handle of a screwdriver and give the MAP sensor a couple moderate whacks. Varied results.

2. ECU reset. Can be done by pulling the fuse in the kick panel, or battery pull. Although I removed my battery for another reason, when I reconnected it and started the car up, it has stopped dipping below 1K.

Give these a shot, since they are both pretty cheap fixes.

Enjoy

 

[QUOTE]Originally posted by Hockey
Two things to try, and I'm surprised a veteran like you doesn't know this (no disrespect) but.......

1. MAP sensor whack.

 

I just started to notice my RPMS dip delow 1k after the SC + AC install. Is this normal for an SC + AC S2K car?

 

My idle RPM is around 900 all the time. I have noticed momentary drops below that causing some shaking every now and again, but it hasn't been anything I've been concerned with.

 

My car has always done this. I just figured it was a factory thing, never given me any problems like stalling so I just ignore it.

 

Sounds like this is something normal. I just never noticed it until i installed the SC and AC.

 

Mine does the same thing and I only have around 800 miles on her.

 

Under 1K is normal.

Factory spec is:

800 RPM +/- 50 a/c off
900 RPM +/- 50 a/c on

 

i believe its normal..but kinda freak me out when it first started to do that