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Patrick Mccreanor
Tinkerer
Western Australia
v8

Posts: 8
Reg: 05-2014

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Thursday, August 17, 2017 - 10:41 pm, by:  Patrick Mccreanor (Daddyg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

the air intake temperture sensor code 24 , is this the MAF or something else on the 4.0 UZZ30 V8 1992 toyota soarer,cheers Pat.
Patrick Mccreanor
Tinkerer
Western Australia
v8

Posts: 9
Reg: 05-2014

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Tuesday, August 22, 2017 - 07:02 pm, by:  Patrick Mccreanor (Daddyg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

can a faulty oxygen sensor give a code 24 ,back pinned the maf ,the wire to the left has no power . thanks Pat..
Patrick Mccreanor
Tinkerer
Western Australia
v8

Posts: 10
Reg: 05-2014

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Friday, August 25, 2017 - 08:26 am, by:  Patrick Mccreanor (Daddyg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

still tinkering with this ,trying to find out how things work and how to test ,,useing one of the middle power wires on the maf back pined off the maf plug I was able to get a read off the two outside wires but no veriation when rev the engine, still try to work out why the engine stalls and stutters
Patrick Mccreanor
Tinkerer
Western Australia
v8

Posts: 11
Reg: 05-2014

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Friday, August 25, 2017 - 07:42 pm, by:  Patrick Mccreanor (Daddyg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

car runs better with maf disconnected, got a second maf delived the other day , car went straight to limp mode a through up a code 24 , cleaned maf with maf sensor spray still no joy, the other maf was causing car to stop and start not doing the tail shaft any favours so put the maf in thats been there for 6 months and no differece if its pluged in or not .
Mike Beck
Goo Roo
New Zealand
3UZ-FE V8 4.3 UZZ32

Posts: 6135
Reg: 11-2005

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Sunday, August 27, 2017 - 11:36 am, by:  Mike Beck (Gold_40gt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

If the air flow meter is disconnected, the ecu runs a default fuel map and fixed intake temp reading and only alters the mixture based on throttle, or TPS position.

Usually in this state the engine runs leaner and timing is advanced so it makes more power oddly enough.

Air flow meter is there to make it run more smoothly, efficiently, emissions and fuel economy wise.

You can't clean these old types as they run a thin film metal mirror that is impossible to clean properly given the design, they just get dirtier if you try in most cases.

The only types you can clean are MAF hot wire types from new generation 1uz 1995+

Error code 24 just means theres no temp sensor. Pull EFI 30a fuse (green) to clear the codes.

In your case, you'd need to find a good condition AFM, not run it at all, or get a AFM delete kit, that adds a MAP sensor and aftermarket piggy back ecu, they aren't cheap, but you can gain performance using them.
Tom Richards
Goo Roo
nsw
V8

Posts: 2346
Reg: 08-2005

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Sunday, August 27, 2017 - 12:37 pm, by:  Tom Richards (Tomr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

repost this under mechanical V8 and you will get more responses
Patrick Mccreanor
Tinkerer
Western Australia
v8

Posts: 12
Reg: 05-2014

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Tuesday, August 29, 2017 - 08:40 pm, by:  Patrick Mccreanor (Daddyg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

thanks for your time and effort to respond on this ,I've just returned two maf's I got from the states all up $180 , I have since sorted another two one from victoria $100 ,and another from the US for $50 , if these don't work out I have come across some after market new MAF starting at $125. plus $65 postage. Cheers Pat.

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