Mechanics

HIGH RPM AFTER STARTING THE CAR

1997 Mazda 323 • 250,000 miles

I have an automatic, 1997 Mazda 323. It would start fine however, the rpm would go up to 2500 and will stay there for a while. When I shift the gear to Reverse or Drive Mode, rpm would go down to normal. However, when I shift it back to Neutral or Park mode, the rpm would again go up to 2500. It will stay on that state for several minutes but once I drive it off and the engine warms up, it gradually lowers the RPM to about? 750 RPM. It's quite alarming since I think this would make the car use up more fuel. Hope you could help. Thanks in advance.


I had the alternator, ignition coil and cerbo kit checked, and according to the mechanic, there's nothing wrong with them. Also, the ignition and cerbo were cleaned.

Please help. Thanks
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Charmander
May 20, 2012.



Did they scan for codes and check for vacuum leaks?

Mhpautos
May 20, 2012.
Not yet. May I asked how do you scan for codes?

Tiny
Charmander
May 20, 2012.
You require a scanner that plugs into the OBD11 access port, all mechanics can do this and some larger parts retailers will do this as a free service I understand.

Mhpautos
May 20, 2012.
If you're located in the US within the 48th States-Go to Autozone or Advance Auto and have it scanned there-you'll also know where to hook-up your scantool to the OBD2 DLC in the future

Rasmataz
May 20, 2012.