Flashyg

Sorry its my first post,
I am a full regular member on Rs246.com a friendly UK based site. I have come over to AW as I am struggling with a difficult issue. I need to get my car to my specialist but it is not well and I am at a loss as to what to do.

need to get car to specialist 7/8/2006.
Your suggestions will help in trying to diagnose the issues.

Silly as it may seem I have been trying for 1.5 years to find the fault, I'm still now only a little wiser. Any help greatly appreciated.

Here goes:

This fault has come today It is an ongoing issue it has intermittently come and gone. Ive been trying to find out what it is but to no avail.

I have changed maf DVs Fuel P regulator MAP sensor 246 valve and it goes away but back it comes.

Now it is really serious as im sure you can see but what is causing it ???>>>???? I just dont know! Seriously bad now.

Booked into Mrc but 200 mile to get there, What do I do?


If I restart the car the ecu goes back to normal but I looked at lambdas and wow they were Trimming -25 on part throttle both sides.

This must be related to the issues im having.

17965 - Charge Pressure Control: Positive Deviation
P1557 - 35-10 - - - Intermittent
17537 - Fuel Trim; Bank 2 (Mult): System too Rich
P1129 - 35-00 - -
17535 - Fuel Trim; Bank 1 (Mult): System too Rich
P1127 - 35-00 - -

Block 1

0.36 600 94 -20.3 -18.8
0.65 560 94 -21.9 -19.5
0.96 600 94 -23.4 -21.1
1.25 760 93 -0.8 -0.8
1.56 800 94 0 0
1.86 680 94 0 0
2.17 800 94 0 0
2.47 1800 94 0 0
2.77 1440 94 0 0
3.07 1080 94 0 0
3.38 800 94 1.6 1.6
3.68 680 94 2.3 2.3
3.97 480 94 1.6 3.1
4.27 520 94 0 0.8
4.58 520 94 -1.6 -0.8
4.88 400 94 0 0
5.18 520 94 -0.8 -0.8
5.48 560 94 -2.3 -2.3
5.79 520 94 -3.9 -3.9
6.09 480 94 -5.5 -4.7
6.39 440 94 -7 -6.3
6.69 480 94 -8.6 -7.8
6.99 560 94 -10.2 -8.6
7.29 520 94 -10.9 -10.2
7.59 520 93 -12.5 -11.7
7.89 480 93 -14.1 -12.5
8.19 520 94 -15.6 -14.1
8.5 560 93 -17.2 -14.8
8.8 520 94 -18 -16.4
9.1 520 94 -19.5 -17.2
9.4 520 94 -21.1 -18.8
9.7 560 94 -21.9 -20.3
10.01 600 94 -23.4 -21.1
10.32 600 94 -24.2 -22.7
10.61 600 94 -25 -23.4
10.91 600 94 -25 -24.2
11.22 640 94 -25 -25
11.51 640 94 -25 -25
11.81 640 93 -25 -25
12.12 680 94 -25 -25
12.43 680 94 -25 -25
12.73 640 94 -25 -25
13.02 640 94 -25 -25
13.33 1280 94 -0.8 -0.8
13.63 1480 94 0 0
13.94 1120 94 0 0
14.24 880 94 -0.8 -0.8
14.53 680 94 -1.6 -1.6
14.84 440 94 0 0
15.13 560 94 -0.8 -0.8
15.43 520 94 -2.3 -2.3
15.74 400 94 0 0
16.04 480 94 -1.6 -1.6
16.34 600 94 -1.6 -1.6
16.64 480 93 -3.1 -3.1
16.94 520 94 -4.7 -3.9
17.24 520 94 -6.3 -5.5
17.55 440 94 -7 -7
17.86 480 94 -8.6 -7.8
18.15 520 94 -10.2 -9.4
18.46 560 94 -11.7 -10.9
18.75 520 94 -13.3 -11.7
19.05 480 94 -14.1 -13.3
19.36 480 94 -15.6 -14.1
19.66 520 94 -17.2 -15.6
19.96 560 93 -18.8 -17.2
20.27 520 94 -19.5 -18
20.56 520 94 -21.1 -19.5
20.87 560 94 -21.9 -20.3
21.17 560 94 -23.4 -21.9
21.47 600 94 -25 -22.7
21.88 600 94 -25 -24.2
22.17 640 94 -25 -25
22.47 560 94 -25 -25
22.79 640 94 -25 -25
23.08 600 94 -25 -25
23.38 640 94 -25 -25
23.68 640 94 -25 -25
23.98 600 94 -25 -25
24.28 640 94 -25 -25
24.59 560 94 -25 -25
24.89 600 94 -25 -25

Regards,

Please help
_------------------------

My thoughts:

Its running like this on idle and no boost leaks.
Its like a valve opens, the dvs don't work or the n75 doesn't work positive deviation.
Then the fueling gets ramped up all in one fail swoop,.
Its some kind of problem on the vac system I think but cant understand it.
There must be a correlation between the fuel system and the vac system.
Could be the fuel pressure regulating getting the right vacuum signal.
So what controls the fuel pressure regulators vac signal?

When I know this the next question is whether there is a relationship between this vacuum and the dv,s, if and I expect there is they all are effected so it is this system which need figuring out.

Any one got any idea?

s4what?

And you have checked for boost leaks by pressurizing the system? (kit available from AWE in US)

Cypher2k

o2 sensors? or anther maf. bosch mafs dont exactly last long.

Flashyg

yes all the normal checks and changes .
Looking for understanding as to why positive deviation first, meaning incorrect boost and immediately lambdas drop to-25 on idle and car revs 400- 800 barley running. Crazy I know.

Flashyg

like all injectors all at once started leaking?
Wtf. Sorry but I just can understand car stinks.

StreetCrawler(Cole)

Have you found the solution? Sounds like the same issue I have had for the last year.