help!!!! throttle response

[silvereik]

In the morning car starts but very low power or throttle doesnt work, last 1-3 min then work fine. When starting on same day then work fine but next morning same problem, no engine light, havent tested with vagcom yet

[wasmachen]

Fehler auslesen und den 'Blauen' auf Plausibilität prüfen.... In den MWB

Sorry for german answer
Use Vagcom an check also the 'reading blocks', specialy engine Temp of the blue sensor...

[VRSyncro]

also check fuel holding pressure

[silvereik]

Okei, thanks to all, i try at weekend what vagcom show. I hope its just sensor fault and sry for bringing english to this forum

[silvereik]

vagcom codes after cold start, didnt come back after cleared with warm engine

Control Module Part Number: 022 906 032 B
Component and/or Version: MOTRONIC ME7.1 V006
Software Coding: 00132
Work Shop Code: WSC 31440
5 Faults Found:
17535 - Fuel Trim: Bank 1 (Mult): System too Rich
P1127 - 35-10 - - - Intermittent
17537 - Fuel Trim: Bank 2 (Mult): System too Rich
P1129 - 35-10 - - - Intermittent
17545 - Fuel Trim: Bank 1 (Add): System too Rich
P1137 - 35-10 - - - Intermittent
17547 - Fuel Trim: Bank 2 (Add): System too Rich
P1139 - 35-10 - - - Intermittent
17551 - Load Calculation Cross Check: Upper Limit Exceeded
P1143 - 35-10 - - - Intermittent


coolant temp sensor looked fine if it was right block but air intake sensor show 29´C and outside was 15´C

also Group 001, O2 sensor before cat were -20% to -15% on idle with 63´C engine temp, vagcom normal values (-10 to 10%) but maybe engine temp was too low and these values just show that its running rich

[designer2k2]

is it in combination with moist air?

could be a bad connection somewhere in the engine bay, and when it drys up (engine warming up) its ok again.

typical points would be the ignitonsystem, airmasssensor or throttle

do this plugs look good inside?

[silvereik]

i did new scan, temps were all fine, outside were 12´C in the morning and coolant was 11 and air 12, o2 readings were inside -10% to 10% with hot engine -5% :S

but still engine feel little bit weak and vibrate a little, when temp reached to 90 it feels better

maf sensor plug have seen days but need to look closer

i clean throttle and that crankshaft breather thing later, these are very dirty

also when i did o2 sensor test with vagcom, pressed brake to rise rpm for auto. test, stange thing happened, brake pedal was pulsing and it effected engine vibration (car was standing still), vacuum leak?


and golf vr6 is new for me but is it normal whan i open driver door, i hear like fuel pump(sounds like fuel pump) go on for 2-3 seconds but not allways

[weißerturbovr]

If you turn the Ignition on, You must hear ever the Fuelpump for one or two seconds.

[silvereik]

With ignition on its normal but it makes same noise when opening door

audi guy say that is normal even if only opening door, it just priming fuel system

[luna-mortem]

This will be the Vakuum Pump of your central locking, maybe there`s a leak in the vakuum hose?

[silvereik]

Okei, thanks. Need to look it later, locks work perfectly.

[SubZeroXXL]

Es geht hier scheinbar nicht um den alten VR6 (MOTRONIC ME7.1 ). Beim TFSI kenne ich das auch, dass die Pumpen beim Türenöffnen kurz anlaufen. Damit wird schon Rail-Druck zum Starten aufgebaut. Also um was geht es hier?

Which engine?
Which car?


SubZeroXXL

[silvereik]

Golf iv, 24v, 4motion,2000

[silvereik]

bad maf, i cleaned throttle and saw that old owner have put new maf but look like its from china

maybe there is another fault but can't search it with this maf

Thanks to all,

[designer2k2]

QH? Quinton Hazell?

http://www.vr6forum.eu/phpBB3/viewtopic ... 21&t=15096

no vr6 is running with this thing...