Club G40 Forum

Technical => Engine and Transmission => Topic started by: Alexiskayak_7 on May 29, 2008, 11:06:39 AM

Title: Problem with gas fumes
Post by: Alexiskayak_7 on May 29, 2008, 11:06:39 AM
My G40 can not pas the gas testing at 2500rpm (it's runing rich) but in idle is great... First of all i've changed the blue temp sensor and i cleaned the injectors...
Is there a possibility 1) The lamda sond is broken?
                                 2)Fuel pressure regulator broken?
                                 3)Co sensor broken?
                                 4)MAP senor?
                                 5)Problem in ECU?
                                 

Do you have any idea what may be wrong???
Title: Re: Problem with gas fumes
Post by: PeteG40 on May 29, 2008, 11:17:59 AM
1. is probably the cas

3. set co2 sensor to 550 ohms
Title: Re: Re: Problem with gas fumes
Post by: Alexiskayak_7 on May 29, 2008, 11:40:59 AM
What is cas???
Title: Re: Re: Re: Problem with gas fumes
Post by: PeteG40 on May 29, 2008, 11:48:34 AM
sorry - probably the case, the problem. (mistyped)
lambda probe can be seen working with an air fuel ratio meter
Title: Re: Re: Re: Re: Problem with gas fumes
Post by: Alexiskayak_7 on May 31, 2008, 12:43:02 PM
I've checked with gas analyzer and the λ seems not to be steady at measures (it's going up and down, from 1.06 to 0.963)
Title: Re: Re: Re: Re: Re: Problem with gas fumes
Post by: Dennis@polo86c.nl on June 10, 2008, 02:21:57 PM
Then the lambda seems ok.
It goes up and down around the lambda=1.00 value.

So, lambda value is ok, but CO isn't?

Did you check for air leaks around the inlet manifold?
Title: Re: Re: Re: Re: Re: Re: Problem with gas fumes
Post by: GTG40 on June 10, 2008, 02:38:08 PM
Is the CO sensor on the boost pipe near the throttle body? if so how do u set it to 550ohms?

Cheers
Title: Re: Re: Re: Re: Re: Re: Re: Problem with gas fumes
Post by: PeteG40 on June 10, 2008, 05:51:18 PM
yes it is... with a multimeter and by setting the screw on top (it may be under a blue cap)
Title: Re: Re: Re: Re: Re: Re: Re: Re: Problem with gas fumes
Post by: GTG40 on June 10, 2008, 11:11:58 PM
[quote pid=1689 author=peteg40 date=1213116678]yes it is... with a multimeter and by setting the screw on top (it may be under a blue cap)[/quote]

Ahh always wondered what that blue thing was

Cheers