1997 Honda Accord Error P0505 - IAC?

PATRICKZ

MEMBER
1997 HONDA ACCORD
6 CYL
FWD
AUTOMATIC
150,000 MILES

For about a month now, my 97 V6 Accord has been sitting in the garage due to the issue decribed below:

The car starts normally but as soon as the car warms up and the idle decreases, the car stalls. It starts back up but stalls again as soon as the idle levels. Got a code P0505 which points to an IAC problem. Before purchasing the item for approx $260, I'd like to get another opinion as to what else it could possibly be. I've cleaned the throttle body, check the coolant levels, erc, to no avail. IAC?

Thanks,

Patrick

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

One of the most common causes of stalling on fuel injected engines is the idle air control (IAC) solenoid or idle speed control (ISC) motor. If the idle speed control device fails to provide the correct idle speed, the engine may die when you slow down or come to a stop. In many cases, the idle control solenoid or motor is gummed up with carbon and fuel varnish deposits. Cleaning the idle port in the throttle body, and the IAC or ISC valve with aerosol throttle cleaner can often solve the stalling problem. If the situation is not improved after cleaning, however, the IAC solenoid or ISC motor may have to be replaced. Check the connector to the device to make sure the connector is not loose or corroded