Vectra air flow sensor

[Mad Mark]

A while ago someone posted a link to a web site that showed how to strip & clean the air flow sensor. Since changing my PC, I have lost this.

Does anyone know the web site address?

Many thanks indeed.

Mark

 

[Patrick E. King]

A while ago someone posted a link to a web site that showed how to strip & clean the air flow sensor. Since changing my PC, I have lost this.

Does anyone know the web site address?

Many thanks indeed.

Mark

Possibly here:-
http://www.vectra-sport.com/How_To/Idle Air control Valve.htm Regards
-Patrick-

 

[Mad Mark]

Possibly here:-
http://www.vectra-sport.com/How_To/Idle Air control Valve.htm Regards
-Patrick-

Fantastic!

Cheers

Mark

 

[Bob Smith]

Possibly here:-
http://www.vectra-sport.com/How_To/Idle Air control Valve.htm Regards
-Patrick-

Thanks (both asker and answerer), I have been wanting to know how to DIY that. Mine needs cleaning out every 3 months.

Another question though: Does anyone know how to get an "air breather mod" kit to stop itmessing the valve up to start with? Someone mentioned getting one under guarantee from VX about a year ago. I asked my regular garage to quiz VX about buying one (out of warranty), and VX say they have no idea what I am talking about! I am also wondering if it is a design flaw, and should be a free mod anyway.

Bob

 

[Patrick E. King]

strip

Thanks (both asker and answerer), I have been wanting to know how to DIY that. Mine needs cleaning out every 3 months.

Another question though: Does anyone know how to get an "air breather mod" kit to stop itmessing the valve up to start with? Someone mentioned getting one under guarantee from VX about a year ago. I asked my regular garage to quiz VX about buying one (out of warranty), and VX say they have no idea what I am talking about! I am also wondering if it is a design flaw, and should be a free mod anyway.

Bob

Sorry! Can't help you on that. Never heard of it either but I'm no expert. Regards Patrick

 

[Bilko130]

Thanks (both asker and answerer), I have been wanting to know how to DIY that. Mine needs cleaning out every 3 months.

Another question though: Does anyone know how to get an "air breather mod" kit to stop itmessing the valve up to start with? Someone mentioned getting one under guarantee from VX about a year ago. I asked my regular garage to quiz VX about buying one (out of warranty), and VX say they have no idea what I am talking about! I am also wondering if it is a design flaw, and should be a free mod anyway.

Bob

You need a breather modification which consists of the
following:-
A gauze filter,
2x Jubille clips.
To fit,
Open the bonnet of your car. You will see at the front of the engine on the right, Right angled, rubber breather pipe aprox 1" in diameter. You have to cut this pipe to fit the Gauze filter in line. Basically, cut out the bend of the pipe so you are left with 2 short straight pieces of pipe. Put the clips over the pipe and fit the filter to the pipes and tighten clips. It's easier to "visualise" if you have the parts in front of you to see how it all fits together. Go to your local Vx parts department and hand over about £15.00 An easy job that shouldn't take more than 5 mins

 

[Bob Smith]

You need a breather modification which consists of the
following:-
A gauze filter,
2x Jubille clips.
To fit,
Open the bonnet of your car. You will see at the front of the engine on the right, Right angled, rubber breather pipe aprox 1" in diameter. You have to cut this pipe to fit the Gauze filter in line. Basically, cut out the bend of the pipe so you are left with 2 short straight pieces of pipe. Put the clips over the pipe and fit the filter to the pipes and tighten clips. It's easier to "visualise" if you have the parts in front of you to see how it all fits together. Go to your local Vx parts department and hand over about £15.00 An easy job that shouldn't take more than 5 mins

Thanks, sounds simple. VX didn't have a clue what my mechanic was talking about when he phoned them about it though.

How often do you need to change the filter? (even if it is once a year, its better than the strip down job I would have to do to clean the valve)

Bob

 

[Bilko130]

Bob
Unless you had major problems with crankcase pressure it should not need changing. It's actually a seperator, It allows the oil vapour in the crankcase gases to be removed so it,s not drawn back into the intake and coats you idle air valve in crap. It does work... to a degree. You will find your IAC will still periodically require cleaning. Incidentally if your having problems with erratic idle speed, carry out the following. Clean the IAC valve with carburettor cleaner. Clean the throttle body and butterfly with carb cleaner. Look at your enigine from the front of the vehicle. At the back of the rocker cover you will see two pipes. One large (about 1") and a small one (about 1/4") With the engine running remove the smaller pipe and check for a vaccum. If no vaccum, the throttle body end is blocked. Remove the pipe from the throttle body and get a paper clip. Unfold the paper clip and sharpen one end. Insert the paper clip into the pipe aperature and unblock the hole. Put the pipe back on and make sure it's unblocked by blowing down it. If this fails, and you still have idle speed faults you may need a new IAC valve. Very expensive. Hope this helps Bilko130

 

[Bob Smith]

Unless you had major problems with crankcase pressure it should not need changing. It's actually a seperator, It allows the oil vapour in the crankcase gases to be removed so it,s not drawn back into the intake and coats you idle air valve in crap. It does work... to a degree. You will find your IAC will still periodically require cleaning. Incidentally if your having problems with erratic idle speed, carry out the following. Clean the IAC valve with carburettor cleaner. Clean the throttle body and butterfly with carb cleaner. Look at your enigine from the front of the vehicle. At the back of the rocker cover you will see two pipes. One large (about 1") and a small one (about 1/4") With the engine running remove the smaller pipe and check for a vaccum. If no vaccum, the throttle body end is blocked. Remove the pipe from the throttle body and get a paper clip. Unfold the paper clip and sharpen one end. Insert the paper clip into the pipe aperature and unblock the hole. Put the pipe back on and make sure it's unblocked by blowing down it. If this fails, and you still have idle speed faults you may need a new IAC valve. Very expensive. Hope this helps Bilko130

Thanks for the info.

I don't have a faulty valve, it works fine after it is cleaned out, but only for 2-3 months. I will get a breather mod, then clean it out myself (only costs £15 at my garage, but I am fed up of taking it in).

Bob

 

[Ikie Cabolacov]

Unless you had major problems with crankcase pressure it should not need changing. It's actually a seperator, It allows the oil vapour in the crankcase gases to be removed so it,s not drawn back into the intake and coats you idle air valve in crap. It does work... to a degree. You will find your IAC will still periodically require cleaning. Incidentally if your having problems with erratic idle speed, carry out the following. Clean the IAC valve with carburettor cleaner. Clean the throttle body and butterfly with carb cleaner. Look at your enigine from the front of the vehicle. At the back of the rocker cover you will see two pipes. One large (about 1") and a small one (about 1/4") With the engine running remove the smaller pipe and check for a vaccum. If no vaccum, the throttle body end is blocked. Remove the pipe from the throttle body and get a paper clip. Unfold the paper clip and sharpen one end. Insert the paper clip into the pipe aperature and unblock the hole. Put the pipe back on and make sure it's unblocked by blowing down it. If this fails, and you still have idle speed faults you may need a new IAC valve. Very expensive. Hope this helps Bilko130

It may sound too simple but check your throttle cable adjustment too. I found mine had been previously adjusted to compensate for the choked up idle valve. when I cleaned the valve I had a merry tickover of 2500.
-- ikie