Volvo RWD 700 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 10/2006 700 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

740 TURBO BUCKS WHEN FLOORED 700 1988

uid 55's pic
posted by  john sargent on  Thu Apr 24 19:15 CST 2014
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Oct 22 09:07 CST 2014
[RELATED]

Turbo 740/s with LH 2.2 have a fuel pump cut out switch mounted adjacent to the EZK (spark computing unit) under the dash. When the boost pressure is too high, the switch cuts power to the fuel pumps. If the hose to the wastegate actuator is broken, the engine will over boost, and the fuel pump pumps will cut out. When the boost drops from a lack of fuel, the switch will close and the fuel pumps will run, and away you go with a lot of boost until the switch again cuts out the fuel pumps. This is probably the bucking you describe. Check for the hose to the wastegate actuator to be broken or disconnected.

Could you turn off the caps lock? All capitals is like yelling. Thanks.
--
john






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New 740 TURBO BUCKS WHEN FLOORED [700][1988]
posted by  turbodog #3  on Thu Apr 24 14:20 CST 2014 >


<< < > >>



©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.