Newbie from Columbus, Ohio may have messed up my air flow meter.

DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
Hi All! I have a N/A 1988 supra. The only mod I have is the HKS mushroom intake. It was deteriorating so I bought a different cone filter. When removing my air flow meter I wasn't thinking (due to lack of sleep from an accident) and instead of removing the clip for the air flow meter plug I unscrewed the connector and moved it around trying to figure out how it comes out. Once I realized the clip was ther I screwed it back and removed the clip. Now my supra won't do more than idle. Any attempt to give it gas makes it gob down and almost quit. I checked the code and it's throwing a 24. I took the screws off and checked all the connectors and they look intact. The plug had 7 slots for male connectors, but should the third slot on the plug from the right not have a metal connector? I researched the site all I could and didn't find anything. I did bend the male connections on the air flow meter slightly to see if they would connect with the plug better and it didn't help. Thanks for any insight you have!!!
 

DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
What I was really wondering is there a way to get in there and see if I un hooked something when I unscrewed the connection. I see there is silicon sealing to cover. Has anyone ever removed that to gain access? I assume that's the only way to the air temperature sensor?
 

Satan

Supramania Contributor
Mar 31, 2005
1,594
0
36
Tampa
Sounds like it's jacked. Try searching for how to clean it. There are instructions about trying a "last-ditch" cleaning of a mirror type thing (been awhile, can't remember). May be here and/or on the Celica/Supra site, or even the MKIIITech site.

Dunno what the AFM/MAF goes for these days, but getting the Lexus AFM deal is probably as cheap and a better option. I have a Lexus one to spare (electronics and housing), but research it and see if it's for you.
 

DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
I've spent hours looking around the internet and have found nothing. Someone on this site referred to cleaning the Air Flow Meter as a last ditch effort to try to fix it. I found info on a mirror in it and not to use chemicals while cleaning it, but nothing about tips on trying to save one. Can anyone help? Has anyone ever taken the silicon off to get at the internal parts? My vane moves fine, but it won't do more than idle and it throwing a 24 code.
 
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DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
I bent the connector tabs to be sure they make a good connection and that didn't help. Everything points to it being a bad AFM. If it's bad then I figure my opening it up to clean won't make atters worse.
 
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porsche6016

New Member
Jul 22, 2007
47
0
0
e-burg
i did the same thing and mine is doing exactly what your describing.... but it gave that code when i unplugged it and i think a 31 when it was plugged in....
 

grimreaper

New Member
Jul 2, 2008
2,180
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Dallas
he is na, no lex upgrade for them ;)

google "tsrm" and click the first thing that pops up. from there go to the efi section and read on how to test the afm under the 7m-ge section.

code 24 is air temp sensor.
 

suprarx7nut

YotaMD.com author
Nov 10, 2006
3,811
1
38
Arizona
www.supramania.com
tlo86;1133156 said:
n/a afm's should be really cheap compared to the gte

especially at a yard. ;)

There were 2 n/a's at a local yard here. If you'd like I can grab one for ya if you pay cost + shipping and the yard doesn't charge too much.

New ones are 2-300 I believe.
 

DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
I opened up the AFM and found some solder on the pin connections to the board loose. I played around with stuff and got my car to run, but something in there is still messed up.

Suprarx7nut-Thanks for offering to go get me a AFM!!! I'm off now to check my yards and will let you know what I find. I found one online for $60 shipped to me which isn't too bad. Thanks all for your help!!!
 

JesseH

Active Member
Nov 12, 2005
1,153
0
36
Englewood, Ohio, United States
DearJimmy;1132646 said:
Hi All! I have a N/A 1988 supra. The only mod I have is the HKS mushroom intake. It was deteriorating so I bought a different cone filter. When removing my air flow meter I wasn't thinking (due to lack of sleep from an accident) and instead of removing the clip for the air flow meter plug I unscrewed the connector and moved it around trying to figure out how it comes out. Once I realized the clip was ther I screwed it back and removed the clip. Now my supra won't do more than idle. Any attempt to give it gas makes it gob down and almost quit. I checked the code and it's throwing a 24. I took the screws off and checked all the connectors and they look intact. The plug had 7 slots for male connectors, but should the third slot on the plug from the right not have a metal connector? I researched the site all I could and didn't find anything. I did bend the male connections on the air flow meter slightly to see if they would connect with the plug better and it didn't help. Thanks for any insight you have!!!
if you do the test as grim says and it fails, i have a extra NA AFM laying around that i would let go for cheap and I'm 100% sure that it works, I'm close to the Dayton area...not sure if you come down this way that much
 

Satan

Supramania Contributor
Mar 31, 2005
1,594
0
36
Tampa
grimreaper;1133216 said:
he is na, no lex upgrade for them ;)

google "tsrm" and click the first thing that pops up. from there go to the efi section and read on how to test the afm under the 7m-ge section.

code 24 is air temp sensor.

Duh... didn't even think of the N/A issue.

Gotta get rid of this 7M stuff I still have around... just confuses me and am getting older every day :nono:
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
10,730
1
38
Valley of the Sun
Jimmy - A couple things:

- Threads on NA motor specific questions belong in the 7m-GE Section
- You DO NOT create different threads in different sections asking the same thing.

I merged the threads and put in the correct section.

You get an infraction hit next time you do this.
 

DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
jdub;1133566 said:
I merged the threads and put in the correct section.

Sorry! I thought they were different enough to seperate them, but you're correct.

I went to the junk yard today and only had time to hit a few. I have a question about Air Flow Meters in Toyota's. The lat 80's Camry V6 Air Flow Meter looks identical to the supra, but has a different number on it. The beginning numbers are both 22250-. My supra AFM 1s 22250-42030 and the Camry is 22250-07010 Does anyone know if there is a difference? I would think one might be the horse power? I held mine up to the Camry's AFM and they are identical. The computer board indife might be different though? Here's a Camry one I found on Ebay as an example:

http://cgi.ebay.com/ebaymotors/88-8...023QQitemZ360085108066QQrdZ1QQsspagenameZWD1V


X87Supra87X - I may have a guy coming from Dayton to buy a chain saw I'm selling. I may be able to choreograph him picking up the part from you. How much did you want for it?
 

DearJimmy

New Member
Sep 17, 2008
13
0
0
Columbus, Ohio
I did do a search for archives on "Camry AFM" and a bunch came up, but nothing I saw that helped. After I wrote my post above this I searched for "Camry Air Flow Meter" and wouldn't you know I found a Thread that talks about an RX-7 AFM working, but the thread just stops without an exact answer. Here it it:

http://www.supramania.com/forums/showthread.php?t=68546&highlight=ES250+afm&page=4

Did anyone try the Camry V6 in their N/A supra?
 

87nasupra

Scotty's Garage
Mar 2, 2006
993
0
0
Jacksonville, FLORIDA !
i've tried it on my 87 n/a when mine started going south last year. Didnt work cause the afm have differnet resitor set-ups inside. I got an extra one for $50 shipped if your interested. I have lots of n/a parts laying around if you need anything