Vacumn problem? (VS Ecotec)

[keygen]

my o2 sensors have given me grief b4 , rough idle etc .

i found info on this site that suggested cutting the pink wires to this/these sensor/s . if they are 4 wire sensors .

if u cut these wires , sensor side , worst case , i believe , is that u'll chew a bit more fuel till u've reached operating temperature . which i've found to be very little & i do know my sensors require replacing anyway .

car still runs very well .

 

[Surfwagon]

my o2 sensors have given me grief b4 , rough idle etc .

i found info on this site that suggested cutting the pink wires to this/these sensor/s . if they are 4 wire sensors .

if u cut these wires , sensor side , worst case , i believe , is that u'll chew a bit more fuel till u've reached operating temperature . which i've found to be very little & i do know my sensors require replacing anyway .

car still runs very well .

You have to be careful to cut the pink heater power wire from the ecu which means checking the on the loom side of the sensor connector because for some reason unknown to mankind Holden doesn't run them in the same order on the sensor side of the connector.
If you were to cut the sensor side pink it would be one of the earth wires.
This has been discussed at length before.
I cut the proper pinks and it definately helped my fuel consumption by at least 2L/100klm.
Early VS's only had a 2 wire O2 sensor (no heater) and the only reason Holden changed to 4 wire (with heater) was for emmissions, to have the fuel maps go into closed loop operation earlier instead of waiting for the exhaust to heat up the O2 sensors as they have to be above 320degC to work properly.
Your exhaust once engine is warmed up is in excess of 400+degC.

SW

 

[Dan VS 231]

Speaking of O2 sensors we have done the ring around for some and apparently there are 2 kinds genuine and aftermarket and in this case the genuine is cheaper by $10 at only $110 each. Does that price look right to you all and if it does I will make the move and hopefully fix some of the issues going on.

 

[Surfwagon]

Do a ring around of places to get genuine parts because you should be able to get them for under $100each, I only paid $55 ea trade and I can't belive they are charging an extra $50+ for retail.

 

[Dan VS 231]

Yeah I will now because $110 look a bit high to me. That was from our local Auto1 where my dad gets trade due to how long he's been going there. Maybe their book was a bit off. Ill check out the local Holden dealer tommorow and see what they can do for me.

 

[Surfwagon]

Yeah I will now because $110 look a bit high to me. That was from our local Auto1 where my dad gets trade due to how long he's been going there. Maybe their book was a bit off. Ill check out the local Holden dealer tommorow and see what they can do for me.

Found these Genuine Holden O2 sensors on eBay;
HOLDEN OXYGEN SENSOR 4 WIRE VS VT VU VX VY VZ - eBay, Air Intake, Fuel Delivery, Car Parts, Accessories, Cars, Bikes, Boats. (end time 05-Mar-09 13:36:42 AEDST)

SW

 

[Dan VS 231]

Got the new O2 sensors in last night and took it for a drive. Runs like a champ now and no more roughness or pulsing on idle. The right side sensor was clean almost unmarked but the left side (which was giving the codes) was char black and just plain blocked etc. Ended up paying just over $70 each with gst from Metro Motors Holden. Much better than the other quote and seems to have fixed the problems, now for some cruising for good times and to settle everything in and give the computer time to readjust itself again.

 

[Surfwagon]

Good to see you didn't pay a fortune for the O2's and that they have worked to fix your problem.

 

[kopper69]

Wouldnt hurt to clear those codes too, so that if any more come up in the near future you dont go chasing old codes. To clear the codes you can disconnect the battery or remove the 20A engine fuse. A couple of seconds should be plenty, but it wouldnt hurt to do something else for a minute. Recheck the codes and they should be all clear. After your next drive check the codes again and make sure there are no new codes coming up.