MRTurbo
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RE: engine won't rev
2010/10/19 12:31:07
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quote:
Originally posted by ashtwo
Just a quick question, how will i know if my AFM is faulty? Is there anyway of checking without replacing the unit?
AFM packing in on these motors is common. First, run diagnostics on the ECU to see if it has thrown any AFM signal codes. 
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ashtwo
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RE: engine won't rev
2010/10/20 21:43:09
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Ok so I pulled the AFM apart this afternoon to check it out and it seemed the gate was pretty well jammed shut! SO, I cleaned it out and hastily put it all back together thinking I've gone done solved it. Should've known better though not to rush putting things back together because you tend to forget things, like for example putting the electric harness back on lol. I started it up, and lo and behold it ran exactly the same with lots of smoke but then stalled due to starving the motor of oxygen. Realising my stupidity I put the harness back on... thinking it should be all good but now there's nothing... not even a little bit of kick :(
Guess I need to reset the computer, to stop it from thinking that something is still wrong?
Changed the fuel filter this morning, but now the fuel pump is making a few funny noises, don't recall it doing this before and there did seem to be plenty of fuel coming through but it might be low now and struggling to get a prime... However it did start before so has got me wondering. Oh well. Cleaned up the spark plugs now and guess will just have to hope for the best tomorrow with a fresh tank of fuel and reset computer.
God I'm an idiot lol.
Thanks guys for all your help, hopefully it'll be back on the road very soon!
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MRTurbo
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RE: engine won't rev
2010/10/22 09:49:16
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Careful when taking apart the AFM as you can damage them very easily. Don't undo the two screws either side of the socket!! I made that mistake once. [:o)]
How did it all go??
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ashtwo
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RE: engine won't rev
2010/10/22 10:49:27
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Not good!
Am having no luck whatsoever :-(
what could've happened if i did undo those two screws?!
I might've maybe done this already :-$
Thanks for your help MRTurbo, is much appreciated! am pretty broke atm so dont want to get a mechanic just yet
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ashtwo
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RE: engine won't rev
2010/10/22 11:00:37
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Yeah it seems that it is damaged/faulty now unfortunately. Bollocks.
I unclipped the harness and it finally started again but ran rough of course.
Is there any way of fixing these? Am not quite sure what I may have damaged! All i could see was a few terminals when i pulled it apart, it wasn't easy to see and I didn't want to force anything so I just put it back together...
Guess I'm up for a new unit?
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MRTurbo
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RE: engine won't rev
2010/10/22 11:10:12
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Don't try and fix it! I tried to get my mate (engineer) to fix mine and it didn't turn out well..these things are fragile after 20 years lol
It will run without it on "memory" but it wont really be drivable. The black socket is attached internally to the board and usually when those two screws are removed it breaks the solder connections and ruins it.
My suggestion would be to source a good condition working AFM, so yes you are up for another unit.
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MuMan
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RE: engine won't rev
2010/10/22 12:20:51
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Have someone that is familiar with MR2's take a look at your car & help you. 
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ashtwo
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RE: engine won't rev
2010/10/22 12:21:43
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Ah damn it lol.
My hastiness to get it running has cost me way more time and money! Oh well least I know what the go is now.
Thanks heaps for your help mate, Ed
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ashtwo
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RE: engine won't rev
2010/10/22 12:23:58
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Thanks MuMan might get the soldering iron out and see if i can't make it work!
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Jimmy_8472
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RE: engine won't rev
2010/10/22 12:28:00
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i work for a toyota dealership.
so if you need a new air flow meter and its an oem model give me your vin number and i can price a new one up for you.
if its an import i'll need the japanese frame and models numbers.
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ashtwo
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RE: engine won't rev
2010/10/22 13:17:42
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Thanks Jimmy, am on a bit of a tight budget at the moment and am tending towards either fixing it or picking up a cheap second hand unit unless you guys can hook me up with one for <150 lol
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MuMan
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RE: engine won't rev
2010/10/22 13:41:07
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No probs..
usually it's the fuel pump actuator arm (1) out of place, and 4&5 torn off the circuit board.
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just_ace
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RE: engine won't rev
2010/10/22 15:35:56
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quote:
Originally posted by Jimmy_8472
i work for a toyota dealership.
so if you need a new air flow meter and its an oem model give me your vin number and i can price a new one up for you.
if its an import i'll need the japanese frame and models numbers.
out of curiosity what do they charge for a new AFM.... i went to my local dealer and they wanted $1.8k.......you can guess my reaction.
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Senol
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RE: engine won't rev
2010/10/22 16:45:45
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quote:
Originally posted by just_ace
quote:
Originally posted by Jimmy_8472
i work for a toyota dealership.
so if you need a new air flow meter and its an oem model give me your vin number and i can price a new one up for you.
if its an import i'll need the japanese frame and models numbers.
out of curiosity what do they charge for a new AFM.... i went to my local dealer and they wanted $1.8k.......you can guess my reaction.
you could buy another motor and gearbox for that price!
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Jimmy_8472
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RE: engine won't rev
2010/10/22 17:01:10
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yeah i had a quick check before i left work on a AFM from an import sw with a 3sgte and it was somewhere in the realm of $800 at trade price. even more interesting was that Toyota Australia no longer had the part number on file.
so even if you were willing to pay that much for a new unit you'd have to hope that a special order would be accepted from japan.
but without a frame and model number i can't be 100% sure on that
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