The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

93 960 High Idle...No clue! 900

posted by  pjmcgnns on  Mon May 31 12:52 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed May 2 05:23 CST 2007
[RELATED]

I installed a rebuilt motor and trans in my 93 960 wagon this weekend. It started right away but has been idling at 1500-2000 rpm ever since. I have tried every diagnostic test in the book and can't get the idle to drop.

I keep getting DTC engine codes 411 & 223, throttle position sensor TPS & idle actuation controller IAC.

I have done the following to no avail:

Swapped TPS with the original motor.
Swapped the IAC with my other 960.
Swappped the ECU to my other 960...ran fine.
Ran the IAC troubleshooting test...could not get proper voltage (6.0-8.5v)on pin 1.
Verified continuity through all the IAC connections to the ECU.
Shot lubricant into the IAC.
Disconnecting the IAC connector while idling has no effect.
Ran the DTC test that verified the ECU saw closed throttle position (CTP) and wide open throttle (WOT) from the TPS.
Ran the DTC test where the IAC is actuated...successful.
Pinching the IAC hose to the intake will cause the idle to drop.

I didn't change any sensors on the rebuilt engine as it was running when I bought it in November 2003.

I don't know what to do next and would appreciate any insight into possible causes.

Thanks.





USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.