Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: para1 on 17 December 2011, 15:50:58

Title: ecu temp sensor
Post by: para1 on 17 December 2011, 15:50:58

do es faulty sensor cause high fuel consumption

Title: Re: ecu temp sensor
Post by: martin42 on 17 December 2011, 16:03:54

usally human input with a heavy right foot gives low mpg  :y

Title: Re: ecu temp sensor
Post by: Andy H on 17 December 2011, 16:17:00

Quote from: para1 on 17 December 2011, 15:50:58

does faulty sensor cause high fuel consumption

Yes

If the ecu believes the engine is cold it stay in 'warm up' mode and throws more fuel in. When the engine is hot the ecu can go closed loop and use the readings from the lambda sensor to fine tune the air/fuel ratio.

Omegas do occasionally suffer from a faulty ecu sensor but you are more likely to have a faulty thermostat in my experience.

Title: Re: ecu temp sensor
Post by: para1 on 18 December 2011, 11:23:41

Quote from: Andy H on 17 December 2011, 16:17:00

Quote from: para1 on 17 December 2011, 15:50:58

does faulty sensor cause high fuel consumption

Yes

If the ecu believes the engine is cold it stay in 'warm up' mode and throws more fuel in. When the engine is hot the ecu can go closed loop and use the readings from the lambda sensor to fine tune the air/fuel ratio.

Omegas do occasionally suffer from a faulty ecu sensor but you are more likely to have a faulty thermostat in my experience.

Title: Re: ecu temp sensor
Post by: para1 on 18 December 2011, 11:30:04

Thanks....Would faulty thermostat give high fuel consumption
        temp gauge not working
        location of ECU sensor

Title: Re: ecu temp sensor
Post by: TheBoy on 18 December 2011, 11:34:05

Quote from: para1 on 18 December 2011, 11:30:04

        temp gauge not working
        location of ECU sensor

There are 2 sensors, one for gauge, one for ECU.

What engine, as location varies.

Title: Re: ecu temp sensor
Post by: Andy H on 18 December 2011, 11:45:03

Cold running definitely will cause high fuel consumption.

On the V6 the ECU temperature sensor is on the back of the coolant bridge (the blue connector in this photo).

The dash sensor is on top of the coolant bridge. It is quite common for the connector to be knocked off but a simple job to reconnect it (if you take the inlet plenum off for access)

(http://homepages.nildram.co.uk/~aholter/DSCF0789.jpg)

Title: Re: ecu temp sensor
Post by: para1 on 18 December 2011, 12:03:50

Quote from: TheBoy on 18 December 2011, 11:34:05

Quote from: para1 on 18 December 2011, 11:30:04

        temp gauge not working
        location of ECU sensor

There are 2 sensors, one for gauge, one for ECU.

What engine, as location varies.

Title: Re: ecu temp sensor
Post by: para1 on 18 December 2011, 12:06:34

THANKS>>>>>>>2.0 ltr Omega Auoto 2000

Title: Re: ecu temp sensor
Post by: RobG on 18 December 2011, 12:12:15

Quote from: para1 on 18 December 2011, 12:06:34

THANKS>>>>>>>2.0 ltr Omega Auoto 2000

(http://i190.photobucket.com/albums/z257/belisensis/Tempsenders_resize.jpg)

Title: Re: ecu temp sensor
Post by: 05omegav6 on 18 December 2011, 17:42:56

Take it you need to strip the scuttle out for that then :-\

Title: Re: ecu temp sensor
Post by: para1 on 19 December 2011, 11:43:55

Quote from: taxi al on 18 December 2011, 17:42:56

Take it you need to strip the scuttle out for that then :-\

Title: Re: ecu temp sensor
Post by: para1 on 19 December 2011, 11:45:38

HOW DO YOU RMOVE SCUTTLE  ANY TIPS,,,,

Title: Re: ecu temp sensor
Post by: Osprey on 19 December 2011, 12:39:59

Have a look in the Maintenance Guide Index in the Maintenance Guides section.  You'll find a guide listed in the "External" section.   :y

Title: Re: ecu temp sensor
Post by: para1 on 20 December 2011, 12:57:20

Quote from: Osprey on 19 December 2011, 12:39:59

Have a look in the Maintenance Guide Index in the Maintenance Guides section.  You'll find a guide listed in the "External" section.   :y

Title: Re: ecu temp sensor
Post by: para1 on 20 December 2011, 13:04:15

THANKS<<<<<<Another bug,<<<<<< radiator fan runs on startup, Temperature gauge
                                                                                                 not working, is the cause
                                                                                                Duff sensor