Bad Idle on 1984 245DL B23F Auto/OD

BrickBoard Archives

The files contained in this listing have been automatically archived from the active forums. Because the vast majority of posts are now in one place, this archive is considered legacy. You should use the SEARCH feature OR choose your topic and select date tabs within the forum you choose.

Bad Idle on 1984 245DL B23F Auto/OD[ALL/1998] posted by Sam on
Thursday, 23 October 1997, at 7:26 a.m.

The car starts on first crank then stalls, it can be started and kept
running by slightly depressing the accelerater. It idles rough but
it does stay running. I disconnected the AMM connector and it seemed
to improve a bit. I have heard that cleaning the connector on the AMM,
it could help the problem. What is recommended to clean the connector?
What other recommendations are out there? Thanks.

Re: Bad Idle on 1984 245DL B23F Auto/OD[ALL/1998] posted by Norm Lizotte on
Thursday, 23 October 1997, at 3:16 p.m.

I didn'y hear that cleaning the connector on the air mass meter would help, but to clean it, get an electronics spray (read the can label to make sure it is safe to use on plastics) and disconnect the connector. Spray inside the female part, and blow it out. Spray the male connector also, blow it out and let it dry, and then reconnect.

Re: Bad Idle on 1984 245DL B23F Auto/OD[ALL/1998] posted by Mark Klein on
Thursday, 23 October 1997, at 9:48 p.m.

Yeah, there have been a few running problems repaired by cleaning the AMM connector. Wouldn't hurt to put some dielectric grease in the connector after a thorough cleaning with the previously stated electrical cleaner.

Try this, though. With the AMM still connected, unplug the O2 sensor. Does it idle smoother? Check the O2 sensor voltage at the disconnected black wire. The voltage should normally be somewhere in the range of .70 to .90 volts. If its out of this range, try adjusting by turning the screw on the side of the AMM to achieve about .88 volts with the sensor disconnected. If it won't adjust, its time to trace a bit further. Repost with your results, good or bad.

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.