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Author Topic: Rev's bouncing + lack of power at just under 3k + very poor mpgs  (Read 1062 times)
jamieg
Virgin
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Posts: 1


« on: October 23, 2008, 09:25:06 PM »

Hi can anyone help me with my A3 1.8T Quattro that has the following issues.


My car is bouncing around when idling, it's not bouncing much but the needle is moving up & down & I can feel a judder in the car, this is whilst sitting still.

When driving along normally if I'm stopping I put the clutch down and the rev's drop to 500 then quickly go back to slightly over 700 again, just over 700rpm is normal, this is also the case if I start the car when it's warm, when cold it's ok but I guess thats the auto choke.

When pulling away or going through the gears I get and very flat spot around 2300 - 2700 rpm you get a judder and it picks up again but with less power than normal and it does not feel fluent or smooth.

When accelerating hard up hill or flat the power hesitates at around 4000 rpm then after around 2 seconds it kicks in again.

When I change gear I dip the clutch and the car jolts, it's not a smooth as it was, seems very jerky - especially pulling away.

I do hear a slight rushing of air sound coming from the engine bay, I think from the drivers side but I can't see anything obvious or hear anything with the bonet up, this noise can't be heard when the car is not moving, it only appears whilst the car is accelerating.


Very poor MPG's, normally I get 32mpg but getting around 26mpg's seems to be peeing fuel, not a cheep habit just now   .


I've tried the following to remedy the issues

Changed MAF sensor
Changed Spark Plugs
Changed Air Filter
Cleaned Throttle Body Housing + reset ECU
Oil was low so I've topped up again as this A3 is one of the oil guzzlers
CTS
Coil Packs

After doing the MAF and plugs this did improve the hesitation.

I've measured blocks 002 and 032 on VAG-COM details below.

Thursday,23,October,2008,20:50:38
06A 906 032 R,,1.8L R4/5VT         0004,

,Group A:,'002,,,,Group B:, Not Running,,,,Group C:, Not Running
,,Idle speed,Engine load,Inj. period,Air mass in,,,,,,,,,,
,TIME,700-820 rpm,15-25%,2.0 - 4.0 ms,2.0-4.5 g/s,TIME,,,,,TIME,,,,
Marker,STAMP, /min,%, ms, g/s,STAMP,,,,,STAMP,,,,
,0.47,720,28.6,2.05,4.11,,,,,,,,,,
,1.02,720,28.6,2.05,4.08,,,,,,,,,,
,1.66,720,28.6,2.05,4.31,,,,,,,,,,
,2.27,760,29.3,2.46,4.28,,,,,,,,,,
,2.85,720,27.8,2.05,3.94,,,,,,,,,,
,3.41,720,27.1,2.05,3.94,,,,,,,,,,
,3.98,760,28.6,2.05,4.28,,,,,,,,,,
,4.46,760,28.6,2.05,4.28,,,,,,,,,,
,4.98,720,28.6,2.05,4.06,,,,,,,,,,
,5.44,720,27.8,2.05,3.97,,,,,,,,,,
,5.96,720,27.8,2.05,4.06,,,,,,,,,,
,6.45,720,28.6,2.05,4.25,,,,,,,,,,
,6.99,760,29.3,2.46,4.28,,,,,,,,,,
,7.54,760,28.6,2.05,4.22,,,,,,,,,,
,8.04,720,27.8,2.05,3.92,,,,,,,,,,
,8.50,720,27.8,2.05,4.00,,,,,,,,,,
,9.03,760,29.3,2.46,4.33,,,,,,,,,,
,9.53,760,29.3,2.46,4.36,,,,,,,,,,
,10.03,720,28.6,2.05,4.00,,,,,,,,,,
,10.53,720,27.8,2.05,4.00,,,,,,,,,,
,11.14,720,27.8,2.05,4.14,,,,,,,,,,
,11.63,760,28.6,2.05,4.25,,,,,,,,,,
,12.09,760,28.6,2.05,4.28,,,,,,,,,,
,12.64,760,27.8,2.05,3.92,,,,,,,,,,
,13.19,720,27.1,2.05,3.92,,,,,,,,,,
,13.67,720,27.8,2.05,4.22,,,,,,,,,,
,14.15,760,28.6,2.05,4.28,,,,,,,,,,
,14.71,760,28.6,2.05,4.28,,,,,,,,,,
,15.26,720,28.6,2.05,4.08,,,,,,,,,,
,15.79,720,27.8,2.05,3.97,,,,,,,,,,
,16.27,720,27.8,2.05,4.19,,,,,,,,,,
,16.73,720,28.6,2.05,4.17,,,,,,,,,,
,17.18,760,28.6,2.46,4.25,,,,,,,,,,
,17.71,760,28.6,2.05,4.08,,,,,,,,,,
,18.18,720,27.8,2.05,3.94,,,,,,,,,,
,18.73,720,27.1,2.05,3.92,,,,,,,,,,
,19.27,760,28.6,2.46,4.31,,,,,,,,,,
,19.77,760,28.6,2.05,4.28,,,,,,,,,,
,20.26,720,28.6,2.05,4.14,,,,,,,,,,
,20.76,720,27.1,2.05,3.92,,,,,,,,,,
,21.23,720,27.8,2.05,4.14,,,,,,,,,,
,21.77,760,28.6,2.05,4.28,,,,,,,,,,
,22.28,760,28.6,2.05,4.22,,,,,,,,,,
,22.82,760,27.8,2.05,4.08,,,,,,,,,,
,23.32,720,27.1,2.05,4.03,,,,,,,,,,
,23.86,760,28.6,2.05,4.31,,,,,,,,,,
,24.32,760,28.6,2.05,4.22,,,,,,,,,,
,24.85,760,28.6,2.05,4.11,,,,,,,,,,
,25.35,720,27.1,2.05,3.89,,,,,,,,,,
,25.90,720,28.6,2.05,4.28,,,,,,,,,,
,26.41,760,29.3,2.05,4.25,,,,,,,,,,
,26.90,760,28.6,2.05,4.14,,,,,,,,,,
,27.38,720,27.8,2.05,3.92,,,,,,,,,,
,27.91,720,27.8,2.05,4.25,,,,,,,,,,
,28.34,760,29.3,2.05,4.31,,,,,,,,,,
,28.92,760,28.6,2.05,4.19,,,,,,,,,,
,29.50,720,27.8,2.05,3.89,,,,,,,,,,
,30.00,720,27.1,2.05,3.94,,,,,,,,,,
,30.59,760,28.6,2.05,4.31,,,,,,,,,,
,31.06,760,29.3,2.05,4.28,,,,,,,,,,
,31.71,600,223 231 001,200 019 033,2.17,,,,,,,,,,
,41.35,720,27.1,2.05,3.89,,,,,,,,,,
,41.94,720,27.8,2.05,4.19,,,,,,,,,,
,42.48,760,28.6,2.46,4.25,,,,,,,,,,
,42.98,760,28.6,2.05,4.17,,,,,,,,,,
,43.46,720,28.6,2.05,4.00,,,,,,,,,,
,43.99,720,27.8,2.05,3.92,,,,,,,,,,
,44.47,720,27.8,2.05,4.22,,,,,,,,,,
,44.99,760,29.3,2.05,4.31,,,,,,,,,,
,45.49,760,28.6,2.05,4.14,,,,,,,,,,
,45.97,720,27.1,2.05,3.86,,,,,,,,,,
,46.50,760,28.6,2.05,4.25,,,,,,,,,,
,47.05,760,28.6,2.05,4.25,,,,,,,,,,
,47.61,760,27.8,2.05,3.94,,,,,,,,,,
,48.16,720,27.1,2.05,3.92,,,,,,,,,,
,48.73,760,28.6,2.05,4.28,,,,,,,,,,
,49.28,760,28.6,2.05,4.25,,,,,,,,,,
,49.79,760,28.6,2.05,4.22,,,,,,,,,,
,50.22,720,27.1,2.05,3.92,,,,,,,,,,
,50.78,720,27.8,2.05,4.08,,,,,,,,,,
,51.23,760,29.3,2.05,4.33,,,,,,,,,,
,51.77,760,29.3,2.05,4.28,,,,,,,,,,
,52.25,760,28.6,2.05,4.11,,,,,,,,,,
,52.75,720,27.1,2.05,3.92,,,,,,,,,,
,53.22,720,28.6,2.05,4.31,,,,,,,,,,
,53.74,760,29.3,2.05,4.33,,,,,,,,,,
,54.21,760,28.6,2.05,4.22,,,,,,,,,,






Thursday,23,October,2008,20:48:18
06A 906 032 R,,1.8L R4/5VT         0004,

,Group A:,'032,,,,Group B:, Not Running,,,,Group C:, Not Running
,,Idle O2 Adapt,Run O2 Adapt, , ,,,,,,,,,,
,TIME,-10-10%,-10-10%, , ,TIME,,,,,TIME,,,,
Marker,STAMP,%,%,,,STAMP,,,,,STAMP,,,,
,0.75,-8.8,8.6,        ,        ,,,,,,,,,,
,1.31,-8.8,8.6,        ,        ,,,,,,,,,,
,1.81,-8.8,8.6,        ,        ,,,,,,,,,,
,2.28,-8.8,8.6,        ,        ,,,,,,,,,,
,2.81,-8.8,8.6,        ,        ,,,,,,,,,,
,3.28,-8.8,8.6,        ,        ,,,,,,,,,,
,3.79,-8.8,8.6,        ,        ,,,,,,,,,,
,4.27,-8.8,8.6,        ,        ,,,,,,,,,,
,4.87,-8.8,8.6,        ,        ,,,,,,,,,,
,5.49,-8.8,8.6,        ,        ,,,,,,,,,,
,6.03,-8.8,8.6,        ,        ,,,,,,,,,,
,6.49,-8.8,8.6,        ,        ,,,,,,,,,,
,7.01,-8.8,8.6,        ,        ,,,,,,,,,,
,7.52,-8.8,8.6,        ,        ,,,,,,,,,,
,8.02,-8.8,8.6,        ,        ,,,,,,,,,,
,8.53,-8.8,8.6,        ,        ,,,,,,,,,,
,9.04,-8.8,8.6,        ,        ,,,,,,,,,,
,9.60,-8.8,8.6,        ,        ,,,,,,,,,,
,10.08,-8.8,8.6,        ,        ,,,,,,,,,,
,10.62,-8.8,8.6,        ,        ,,,,,,,,,,
,11.10,-8.8,8.6,        ,        ,,,,,,,,,,
,11.62,-8.8,8.6,        ,        ,,,,,,,,,,
,12.20,-8.8,8.6,        ,        ,,,,,,,,,,
,12.77,-8.8,8.6,        ,        ,,,,,,,,,,
,13.27,-8.8,8.6,        ,        ,,,,,,,,,,
,13.73,-8.8,8.6,        ,        ,,,,,,,,,,
,14.25,-8.8,8.6,        ,        ,,,,,,,,,,
,14.81,-8.8,8.6,        ,        ,,,,,,,,,,
,15.35,-8.8,8.6,        ,        ,,,,,,,,,,
,15.93,-8.8,8.6,        ,        ,,,,,,,,,,
,16.44,-8.8,8.6,        ,        ,,,,,,,,,,
,17.02,-8.8,8.6,        ,        ,,,,,,,,,,
,17.51,-8.8,8.6,        ,        ,,,,,,,,,,
,18.12,-8.8,8.6,        ,        ,,,,,,,,,,
,18.68,-8.8,8.6,        ,        ,,,,,,,,,,
,19.18,-8.8,8.6,        ,        ,,,,,,,,,,
,19.68,-8.8,8.6,        ,        ,,,,,,,,,,
,20.32,-8.8,8.6,        ,        ,,,,,,,,,,

I would appreciate any help and cheers for taking the time to read.
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Luck768
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Posts: 1


« Reply #1 on: May 14, 2009, 04:53:31 AM »

I want to help you but the thing is I am not to that but I know someone that can help  you.,I will post again if I met him again.,



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