Adjusted AFM now iding retarded

ravenmaster · 08-14-2006, 09:14 PM

okay maybe not the best topic in the world but I tried to make my fuel mixture ratio a little more lean which didn't work out so well so i put the AFM cog back to the stock position and have gotten the same reaction: It idles all funky it will drop down to 500 RPM and sound like it is getting ready to die (kinda like put put put and ill throw it in nuetral and hit the accelerator and itll go to idling at around 650-700 RPM which is fine but the put put while barely noticable is still there. What the funk? it actually died on me yesterday at a stop sign. Anyone know what the problem is?
Car Specs:
1987 Toyota Supra N/A
All stock except Spectre Power Adder Hi-Flow Cone Air Filter

ravenmaster · 08-15-2006, 01:20 AM

Cmon guys something, anything

kwnate · 08-15-2006, 01:36 AM

You probably fubard the sensor. They are delicate.

burton51m · 08-15-2006, 03:45 AM

http://www.supras.com/06/techcenter/display.php?QID=16

first of all..did u use that^? then maybe i can help

Supra2NR · 08-15-2006, 05:50 AM

this is my opinion, if its wrong sumbody correct me

what do you make it run more lean?
thats asking to damage your engine
cuz that would mean you had to tighten the spring tension on the afm
to fool the ecu to think that it recieving less air than it is
and it will send less fuel,
so this way youll ber running with more air and less fuel
ergo lean condition

if you lessend the spring tension tho,
you probly messed up the afm,
now the trap door is so loose on the afm
its f(_)ckin the ecu, to think that it getting more air than it actually does
so now its sending more fuel
now your engine is chocking (drowning)
cuz youre running too rich
thats why its died on you

by the way how is youre gas consumption? is it really bad? jus out of curiousity

mrnickleye · 08-15-2006, 05:54 AM

Try this....with engine off...remove the neg. battery terminal for 10 minutes. This will clear the ECU. Then re-attach the terminal and drive the car for 10-20 min in city and hwy. Shut it off for a minute, theen drive ir again. This will cause the ECU to 're-learn', and may solve the problem.

ravenmaster · 08-15-2006, 01:50 PM

I didnt mod it cuz i was trying to be mister wanting to get better gas mileage i only did it cuz the last guy had told me he had done it to richen the mixture i wanted to fix that. ill try the ecu thing when i get home thax.

ravenmaster · 08-15-2006, 11:32 PM

Something else I forgot to mention before. This was happening before the AFM incident. When I push on the accelerator while park or in nuetral and let it slowly rev up when it hits about 2,000 RPM (where it would stop f the next part didn't happen) it'll drop back down and start the revving over again. Is this due to the throttle positioning sensor? Or is it an easy fix.

ravenmaster · 08-19-2006, 06:40 AM

Okay much apologies for bringing back an old thread but I have an updat:
Turns out it wasn't my adjusting the AFM that made the Put-put problem. I had a giant gash in the preheater hose (I think thats what it is called...the hose between the AFM and the Silencer....). I found this out today when I took the AFM off to get a better look. I just happened to look on the underside and sure enough...Giant gash. So I went to pepboys and picked up the Spectre Modular Air Intake and installed it from the throttle body all the way down and through the little hole where the stock intake used to reside. So the Spectre High Flow Air filter (Poweradder) sits on the other side of the hole, the afm sits on the engine compartment side with the new Modular tube leading up to the throttle body. Wala instant $60 cold air intake (sorta). This got rid of my idling and almost stalling problem. Doesn't jump around or have any issues at all. From what I understand though is N/A's are supposed to idle at 800 RPM right? Mine idles at 600 RPM. Is this a problem?

I am going to take it on the freeway tomorrow to see if the buzzing noise under the hood still occurs or if this was a problem of the same effect. I also did an ECU reset like suggested after this install and wow what a difrence the car actually seems to be responding better. That can't all be the intake.

f00g00 · 08-19-2006, 12:09 PM

You can adjust the screw in the back of the trottle body a little to bring up the idle rpm and then just recheck the tps sensor when done. Im not talking about the normal adjustment on the linkkage either. The actual throttle stop can be screwed in a little after you loosen up the 8mm nut I beleive it is.

08-14-2006, 09:14 PM	#1
ravenmaster 12psi boost Join Date: Aug 2006 Location: Being not duly informed, I refuse to answer with any degree of accuracy for fear of prevaricating Posts: 265	Adjusted AFM now iding retarded okay maybe not the best topic in the world but I tried to make my fuel mixture ratio a little more lean which didn't work out so well so i put the AFM cog back to the stock position and have gotten the same reaction: It idles all funky it will drop down to 500 RPM and sound like it is getting ready to die (kinda like put put put and ill throw it in nuetral and hit the accelerator and itll go to idling at around 650-700 RPM which is fine but the put put while barely noticable is still there. What the funk? it actually died on me yesterday at a stop sign. Anyone know what the problem is? Car Specs: 1987 Toyota Supra N/A All stock except Spectre Power Adder Hi-Flow Cone Air Filter Last edited by ravenmaster; 08-14-2006 at 09:26 PM.

08-15-2006, 01:36 AM	#3
kwnate SP58GT Join Date: Jul 2005 Location: USA Posts: 633	You probably fubard the sensor. They are delicate. __________________ Nate

08-15-2006, 03:45 AM	#4
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	http://www.supras.com/06/techcenter/display.php?QID=16 first of all..did u use that^? then maybe i can help __________________

08-15-2006, 05:50 AM	#5
Supra2NR 1000whp postwhore Join Date: Apr 2006 Location: Chi-Town Posts: 1,643	this is my opinion, if its wrong sumbody correct me what do you make it run more lean? thats asking to damage your engine cuz that would mean you had to tighten the spring tension on the afm to fool the ecu to think that it recieving less air than it is and it will send less fuel, so this way youll ber running with more air and less fuel ergo lean condition if you lessend the spring tension tho, you probly messed up the afm, now the trap door is so loose on the afm its f(_)ckin the ecu, to think that it getting more air than it actually does so now its sending more fuel now your engine is chocking (drowning) cuz youre running too rich thats why its died on you by the way how is youre gas consumption? is it really bad? jus out of curiousity __________________ http://www.myspace.com/supra_2nr Into Bikes now,, apparently the supra couldnt kill me, so my zx6 might lol

08-15-2006, 05:54 AM	#6
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	Try this....with engine off...remove the neg. battery terminal for 10 minutes. This will clear the ECU. Then re-attach the terminal and drive the car for 10-20 min in city and hwy. Shut it off for a minute, theen drive ir again. This will cause the ECU to 're-learn', and may solve the problem. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

08-15-2006, 01:20 AM	#2
ravenmaster 12psi boost Join Date: Aug 2006 Location: Being not duly informed, I refuse to answer with any degree of accuracy for fear of prevaricating Posts: 265	Cmon guys something, anything

08-15-2006, 01:50 PM	#7
ravenmaster 12psi boost Join Date: Aug 2006 Location: Being not duly informed, I refuse to answer with any degree of accuracy for fear of prevaricating Posts: 265	I didnt mod it cuz i was trying to be mister wanting to get better gas mileage i only did it cuz the last guy had told me he had done it to richen the mixture i wanted to fix that. ill try the ecu thing when i get home thax.

08-15-2006, 11:32 PM	#8
ravenmaster 12psi boost Join Date: Aug 2006 Location: Being not duly informed, I refuse to answer with any degree of accuracy for fear of prevaricating Posts: 265	Something else I forgot to mention before. This was happening before the AFM incident. When I push on the accelerator while park or in nuetral and let it slowly rev up when it hits about 2,000 RPM (where it would stop f the next part didn't happen) it'll drop back down and start the revving over again. Is this due to the throttle positioning sensor? Or is it an easy fix.

08-19-2006, 06:40 AM	#9
ravenmaster 12psi boost Join Date: Aug 2006 Location: Being not duly informed, I refuse to answer with any degree of accuracy for fear of prevaricating Posts: 265	Okay much apologies for bringing back an old thread but I have an updat: Turns out it wasn't my adjusting the AFM that made the Put-put problem. I had a giant gash in the preheater hose (I think thats what it is called...the hose between the AFM and the Silencer....). I found this out today when I took the AFM off to get a better look. I just happened to look on the underside and sure enough...Giant gash. So I went to pepboys and picked up the Spectre Modular Air Intake and installed it from the throttle body all the way down and through the little hole where the stock intake used to reside. So the Spectre High Flow Air filter (Poweradder) sits on the other side of the hole, the afm sits on the engine compartment side with the new Modular tube leading up to the throttle body. Wala instant $60 cold air intake (sorta). This got rid of my idling and almost stalling problem. Doesn't jump around or have any issues at all. From what I understand though is N/A's are supposed to idle at 800 RPM right? Mine idles at 600 RPM. Is this a problem? I am going to take it on the freeway tomorrow to see if the buzzing noise under the hood still occurs or if this was a problem of the same effect. I also did an ECU reset like suggested after this install and wow what a difrence the car actually seems to be responding better. That can't all be the intake. Last edited by ravenmaster; 08-19-2006 at 06:42 AM.

08-19-2006, 12:09 PM	#10
f00g00 12psi boost Join Date: Aug 2005 Location: Kuwait Posts: 292	You can adjust the screw in the back of the trottle body a little to bring up the idle rpm and then just recheck the tps sensor when done. Im not talking about the normal adjustment on the linkkage either. The actual throttle stop can be screwed in a little after you loosen up the 8mm nut I beleive it is.