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Please play nicely.  No one wants to listen/read a keyboard warriors rants....

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Author Topic: Maf  (Read 2217 times)

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jacko

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Maf
« on: 28 June 2021, 13:55:22 »
Hi all

Have had a code telling me the maf is bad
Have changed it still have code come on after resetting it any ideas chaps :y
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jacko

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Re: Maf
« Reply #1 on: 28 June 2021, 13:56:20 »
Could the thottle body need cleaning  ;)
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Nick W

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Re: Maf
« Reply #2 on: 28 June 2021, 14:06:50 »
Quote from: jacko on 28 June 2021, 13:56:20
Could the throttle body need cleaning  ;)


Yes.


But it won't change anything to do with the MAF. Or anything else, unless the TB is dripping with oil.
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Doctor Gollum

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Re: Maf
« Reply #3 on: 28 June 2021, 14:55:11 »
Or it has a cone filter fitted.
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jacko

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Re: Maf
« Reply #4 on: 28 June 2021, 15:49:24 »
No has standard air filter could it possibly be the wires :-\
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Doctor Gollum

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Re: Maf
« Reply #5 on: 28 June 2021, 16:06:20 »
Possibly...
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jacko

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Re: Maf
« Reply #6 on: 28 June 2021, 16:14:43 »
Little more detail have these codes

P0100
P1700
P1781
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Doctor Gollum

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Re: Maf
« Reply #7 on: 28 June 2021, 16:25:10 »
Cam sensor.  :y

I presume that it's an auto...
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jacko

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Re: Maf
« Reply #8 on: 28 June 2021, 19:06:34 »
Yes it is auto 2.2
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Doctor Gollum

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Re: Maf
« Reply #9 on: 28 June 2021, 19:18:45 »
100% cam sensor. The random gearbox codes being the give away ;)

Usual rules apply, genuine sensor from a genuine Vauxhall dealer that you genuinely have to walk in to  :y

The P0100 should go with a decent clean of the breathers and throttle body. (might be related to the cam sensor but unusual for that to be the case)  ;)
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jacko

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Re: Maf
« Reply #10 on: 28 June 2021, 19:28:10 »
Is one of those codes relating to cam sensor  :)
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Doctor Gollum

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Re: Maf
« Reply #11 on: 28 June 2021, 20:06:33 »
Quote from: jacko on 28 June 2021, 19:28:10
Is one of those codes relating to cam sensor  :)
Nope.

2.2 cam sensor usually throws a random gearbox code... P17xx even on a manual car :D

2.2 crank sensor always throws the correct code.

V6 rarely throws a crank sensor code but always throws a cam sensor one. The difference being that the 2.2 will start without either sensor.

Put it another way, you can swap out the gearbox and its ecu, but you will still have the codes. Until you replace the cam sensor...
« Last Edit: 28 June 2021, 20:08:30 by Doctor Gollum »
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jacko

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Re: Maf
« Reply #12 on: 28 June 2021, 22:02:12 »
Okay thank you looks like a cam sensor change then
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TheBoy

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Re: Maf
« Reply #13 on: 29 June 2021, 20:13:40 »
Cam sensor will limit rpm to about 4500.  Most of the time, a 2.0/2.2 will through the P0340 cam sensor code IME.

Worth reading the TCM/gearbox for other codes, as its that that is complaining
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Doctor Gollum

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Re: Maf
« Reply #14 on: 30 June 2021, 02:42:51 »
Quote from: TheBoy on 29 June 2021, 20:13:40
Cam sensor will limit rpm to about 4500.  Most of the time, a 2.0/2.2 will through the P0340 cam sensor code IME.

Worth reading the TCM/gearbox for other codes, as its that that is complaining
2.2: Five for five have needed a cam sensor rather than a gearbox. IME

1 personally, and the rest for other people. Most 2.2 owners don't know what 4,500 rpm feels like  :D
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