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Author Topic: Performance drop and Fault codes on my Facelift...  (Read 1241 times)

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JamesV6CDX

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Performance drop and Fault codes on my Facelift...
« on: 13 September 2007, 11:01:54 »
Just flashed out my codes...

73 Air Flow Sensor (AFS) Low voltage
74 Air Flow Sensor (AFS) High voltage

Visually everything seems fine, nothing is unplugged. Again, visually, I can see both multirams working if I give it a hard rev.

Symptoms are, poor pickup at low revs.

Any ideas? :)
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TheBoy

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Re: Performance drop and Fault codes on my Facelif
« Reply #1 on: 13 September 2007, 11:40:22 »
Quote
Just flashed out my codes...

73 Air Flow Sensor (AFS) Low voltage
74 Air Flow Sensor (AFS) High voltage

Visually everything seems fine, nothing is unplugged. Again, visually, I can see both multirams working if I give it a hard rev.

Symptoms are, poor pickup at low revs.

Any ideas? :)
PM sent...
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Grumpy old man

omegalord

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Re: Performance drop and Fault codes on my Facelif
« Reply #2 on: 13 September 2007, 11:49:22 »
Shouldnt the multiram at the back work on little blips of the engine?
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JamesV6CDX

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Re: Performance drop and Fault codes on my Facelif
« Reply #3 on: 13 September 2007, 11:52:56 »
Just checked again, neither multirams seem to work now...
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Golfbuddy

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Re: Performance drop and Fault codes on my Facelif
« Reply #4 on: 13 September 2007, 11:53:58 »
Quote
Quote
Just flashed out my codes...

73 Air Flow Sensor (AFS) Low voltage
74 Air Flow Sensor (AFS) High voltage

Visually everything seems fine, nothing is unplugged. Again, visually, I can see both multirams working if I give it a hard rev.

Symptoms are, poor pickup at low revs.

Any ideas? :)
PM sent...

Is it a secret then?  :-?
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JamesV6CDX

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Re: Performance drop and Fault codes on my Facelif
« Reply #5 on: 13 September 2007, 11:57:49 »
Quote
Quote
Quote
Just flashed out my codes...

73 Air Flow Sensor (AFS) Low voltage
74 Air Flow Sensor (AFS) High voltage

Visually everything seems fine, nothing is unplugged. Again, visually, I can see both multirams working if I give it a hard rev.

Symptoms are, poor pickup at low revs.

Any ideas? :)
PM sent...

Is it a secret then?  :-?

Not at all, just making Tech2 plans...
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Dazzler

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Re: Performance drop and Fault codes on my Facelif
« Reply #6 on: 13 September 2007, 12:01:17 »
I take it you have checked for obvious air leaks using Carb cleaner or similar???
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omegalord

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Re: Performance drop and Fault codes on my Facelif
« Reply #7 on: 13 September 2007, 12:10:47 »
Dazzler,

My rams dont work either , what do you mean when you say check for air leaks with carb cleaner?

Will an air leak stop the rams from working?

Just bought a new vac tank thinking it was that and still doesnt work  >:(
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Dazzler

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Re: Performance drop and Fault codes on my Facelif
« Reply #8 on: 13 September 2007, 12:28:08 »
Quote
Dazzler,

My rams dont work either , what do you mean when you say check for air leaks with carb cleaner?

Will an air leak stop the rams from working?

Just bought a new vac tank thinking it was that and still doesnt work  >:(

They are vaccum operated so thus an airleak will detract from the vaccum.
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JamesV6CDX

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Re: Performance drop and Fault codes on my Facelif
« Reply #9 on: 13 September 2007, 12:37:16 »
Cheers Dazzler

You have PM mate.
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TheBoy

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Re: Performance drop and Fault codes on my Facelif
« Reply #10 on: 13 September 2007, 12:40:16 »
Quote
Dazzler,

My rams dont work either , what do you mean when you say check for air leaks with carb cleaner?

Will an air leak stop the rams from working?

Just bought a new vac tank thinking it was that and still doesnt work  >:(
Was it a brand new vac tank, or 2nd hand.  If later, check its one way valve...
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Grumpy old man

omegalord

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Re: Performance drop and Fault codes on my Facelif
« Reply #11 on: 13 September 2007, 16:22:42 »
Dazzler and The Boy,

It was a brand new vac tank from vauxhall (£18) , i understand it is all operated by vacuum , but where does the carb cleaner come in?   :-[

 :y
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TheBoy

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Re: Performance drop and Fault codes on my Facelif
« Reply #12 on: 13 September 2007, 17:14:06 »
Quote
Dazzler and The Boy,

It was a brand new vac tank from vauxhall (£18) , i understand it is all operated by vacuum , but where does the carb cleaner come in?   :-[
 :y
carb cleaner doesn't on the vac system - dazzler, i think, is thinking about looking for air leaks on the air feed to engine....   ....I would say the vac system is too small to find leaks using flammable gases  :-/
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Grumpy old man
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