 AFM?, what is it? |
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 Nov 7, 2004 - 8:22 PM
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Enthusiast  Joined Aug 22, '04 From kitchener,Ontario Currently Offline Reputation: 0 (0%)  |
stupid ? but what is it?
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Nov 7, 2004 - 8:26 PM
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Enthusiast Joined Jul 7, '04 From charlotte N.C. Currently Offline Reputation: 0 (0%) |
are you in the process of doing a swap? if so what gen.
a afm basically replaces the map sensor. it reads air coming in and its density and its temperture. -------------------- Former: 96 GT 5 speed (i/p/e) Fate- rear ended by mack truck
00 GTS 6 speed (i/ Bored TB 63mm - 68.5mm w/ butterfly/ Ported IM/ IMG/ PFC/ Commander/ datalogit/ Ported & heat wrapped Header/ Decat/ UEGO/) 193FWHP 14.2(1/4mi) @98mph, 2.12 60ft (just intake, unbolted Exhaust, and gutted) Fate- side swipped by 18 wheeler at 75mph. Next: maybe an elise |
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Nov 7, 2004 - 8:32 PM
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Enthusiast Joined Aug 22, '04 From kitchener,Ontario Currently Offline Reputation: 0 (0%) |
1st gen 3sgte swap.I have a mr2 map sensor thats for vacum.
This post has been edited by celicaspeed: Nov 7, 2004 - 8:32 PM |
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Nov 7, 2004 - 8:32 PM
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 Administrator Joined Aug 23, '02 From Seattle, WA Currently Offline Reputation: 14 (100%) |
 The AFM is the silver and black thing that my air filter is attached to in that photo. -------------------- New Toyota project coming soon...
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Nov 7, 2004 - 8:35 PM
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Enthusiast Joined Aug 22, '04 From kitchener,Ontario Currently Offline Reputation: 0 (0%) |
in canada we call that a mass air flow.I got one and its out of a rx7 and it works.My buddy has a 3sgte mr2 and thats what he used!Its also bigger than the one in the 3sgte.It gets more air volume.
This post has been edited by celicaspeed: Nov 7, 2004 - 8:36 PM |
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Nov 7, 2004 - 8:38 PM
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Enthusiast Joined Aug 22, '04 From kitchener,Ontario Currently Offline Reputation: 0 (0%) |
Im still not getting any spark.I have to check if the igniter has a ground because I know it has 12v.
This post has been edited by celicaspeed: Nov 7, 2004 - 8:39 PM |
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Nov 7, 2004 - 9:01 PM
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 Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
AFM would be the better name for it, although AFM and MAF are essentially the same thing, there are newer MAFs that are completely different. I'd suggest you try swapping out the AFM. Even with everything perfect... a bad AFM will cause no spark. Try swapping one from a Toyota car... a 22RE AFM or 4AG AFM or 7MG or something. The engine may or may not run good with those AFMs... but if it sparks and studders and tries to start... you'll at least know what's the problem. I don't reccomend crossing different AFM types because they are different. The flaps send different signals, read out different voltages, etc... they are not universal sensors. I fried 2 smallport 4AG AFMs (US/CANADA Spec) running on my smallport 4AG with bigport harness and ecu.
-------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Nov 7, 2004 - 9:50 PM
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Enthusiast Joined Aug 22, '04 From kitchener,Ontario Currently Offline Reputation: 0 (0%) |
all denso air flow meters are the same they only bring in more or less air.Thats all.toyota denso and mazda denso ford denso is all the same.
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Nov 7, 2004 - 9:52 PM
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Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
They're different... They use the same housing... the same set-up... but readouts and voltage are all different. If they were the same... why people would buy 4AG 20V AFMs for 150.00 when they can get a regular bigport AFM for 10.00? -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Nov 7, 2004 - 10:47 PM
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Enthusiast Joined Aug 22, '04 From kitchener,Ontario Currently Offline Reputation: 0 (0%) |
The afm that I have I tested out of a celica 3sgte book and made sure that all the voltage and all the resistance was correct and it was!The only real differance is the pinouts 5 pin, 7 pin etc
This post has been edited by celicaspeed: Nov 7, 2004 - 10:49 PM |
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Nov 7, 2004 - 11:27 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
on the 3sgte the map sensor is also known as the turbo pressure sensor. it does 2 things...1 tells the stock boost gauge and the ecu how much boost the car is seeing, 2 ...sends a signnal to the ecu to fuel cut if the car over boosts.
the AFM measures the amount of air going into the engine. this is where the ecu gets its readings for a correct air to fuel ratio. many mr2 guys report the rx7 afm to be the same part, tho i cant say i really know anyone who has it installed on their car. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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