Volvo RWD 200 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 7/2009 200 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

intermittent very fast idle after engine fully warms up 200 1990

posted by  someone claiming to be bearnoel on  Mon Apr 11 04:33 CST 2005 [RELATED]

I have noticed a problem with my 240 non turbo with automatic transmission.

If I go on the expressway for more than five minutes and get to open the throttle to reach speeds of 60 -55mph, when I get off the expressway and ease off the gas pedal, the engine keeps on racing and then going back to idle and then racing again without me touching the gas pedal.

It races for two to three seconds and then settles to regular idle for the same amount of time and the cycle repeats itself. The car has 150,000 miles and I have had it for 1 1/2 years. I have not touched the throttle assembly, the constant idle air pump nor cleaned the throttle body, but a local mechanic has changed the head gasket,the intake manifold and exhaust manifold gaskets. with the timing belt last July. When I drive around town for five to ten minutes jaunts I do not experience or at least notice the phenomenon.

What should I check, clean up, adjust or replace?








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    intermittent very fast idle after engine fully warms up 200 1990

    posted by  Sumerduckman on  Mon Apr 11 07:37 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Tue Aug 21 11:31 CST 2007
    [RELATED]

    You should also go ahead and do a throttle body service, and check the function/adjustment on the throttle position switch.
    Look for all the specifics in the 700/900 faq under engine tune-up and performance.
    --
    Gary Gilliam Sumerduck VA, '94 940 na Regina 150k, '86 240 180k








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    intermittent very fast idle after engine fully warms up 200 1990

    posted by  Joe HC on  Mon Apr 11 05:08 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Sat Jun 21 08:19 CST 2008
    [RELATED]

    I had a similar problem and it was the temp sensor that goes into the engine. It died and was giving conflicting readings to the ECU.

    --Joe HC
    --
    1977 244 160k (?), 1990 244 102k, 1978 Fiat 124 Spyder (restoring)







<< < > >>



©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.