Volvo RWD 700 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 8/2002 700 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Bad Gas mileage/Checking ECT 700

posted by  someone claiming to be Mark on  Tue Dec 24 05:18 CST 2002 [RELATED]

Hi all!

I have an '87 740 GLE wagon w/ B230F engine that is getting TERRIBLE gas mileage (about 10mpg). After reading the FAQ's, I am suspecting that the engine coolant temperature sensor (ECT) is suspect. I want to test it without ripping everything apart. My Haynes manual seems to have no information on dealing with this sensor whatsoever, unless I totally missed something. (Please correct me if I'm wrong)

The FAQ mentions checking voltage between pins #5 (-) and #13 (+) on the LH ECU at various stages of engine temperatures with the ECU intact. I don't seem to have any diagrams as to where this ECU is located, what it looks like, or where the best test points can be accessed. Can anybody shed some light on this?

Thanks!

-Mark






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Bad Gas mileage/Checking ECT [700]
posted by  someone claiming to be Mark  on Tue Dec 24 05:18 CST 2002 >


<< < > >>



©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.