Car isn't running right.

sleekgreen · 12-16-2002, 01:11 PM

I just replaced the IAC in my car. After I replaced it, when I rev the car up, it takes 3 or 4 seconds for it to rev back down. When I drive the car, I have to wait before for the RPM's to drop before I shift!
Another problem, not related to the above, is that my tach won't drop below 4000 RPM's. When I get on it, it will move up some and then stop back at 4000.

Any Help?????

fongo · 12-16-2002, 01:28 PM

In terms of the IAC valve, I just replaced mine on my 1993 GT: Make sure that the part number is correct (check your local part store) sometimes between years the parts may fluctuate a bit. Also check the electrical connections for rust or damaged wires which may short out the signal between the unit and the EEC.
My 2 cents.
The RPM dial coil (behind the instrument panel) may be damaged, but I'm just speculating. I hope someone else help you with this. Sorry! good luck!
fongo

12-16-2002, 01:11 PM	#1
sleekgreen Registered Member Join Date: Jun 2002 Location: SC Posts: 6	Car isn't running right. I just replaced the IAC in my car. After I replaced it, when I rev the car up, it takes 3 or 4 seconds for it to rev back down. When I drive the car, I have to wait before for the RPM's to drop before I shift! Another problem, not related to the above, is that my tach won't drop below 4000 RPM's. When I get on it, it will move up some and then stop back at 4000. Any Help?????

12-16-2002, 01:28 PM	#2
fongo Registered Member Join Date: Jan 1999 Location: Farmingdale, NY Posts: 139	In terms of the IAC valve, I just replaced mine on my 1993 GT: Make sure that the part number is correct (check your local part store) sometimes between years the parts may fluctuate a bit. Also check the electrical connections for rust or damaged wires which may short out the signal between the unit and the EEC. My 2 cents. The RPM dial coil (behind the instrument panel) may be damaged, but I'm just speculating. I hope someone else help you with this. Sorry! good luck! fongo __________________ 1993 GT, MAC Fenderwell Cold Air Induction; Accel dist.,Splitfire plugs, BBK: 1 5/8 unequal length shorties, hi flow H-pipe w/ cats; Flowmasters 2 chamber American Thunder catback system, Motorsports 3-core radiator, 180º thermostat, BBK adj. clutch quad...the rest is bone stock!..but more mods to come!!

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