looking at supra but has afm issues any ideas?

90toyturbo · 01-17-2011, 10:52 AM

So it drives but throws a check engine light randomly when it does the check engine light trick it wont go over 2000 rpm than it runs fine when the light is gone is this common? Should i get a new afm or is it common for the wires to come loose? Ive had tons of problems with my toyota pickups afm ive replaced it 4 times is it just a toyota thing to have bad ones?

90toyturbo · 01-17-2011, 11:45 AM

Oh yeah and its a 90 7mgte motor if that makes a difference

btwilson86 · 01-17-2011, 09:29 PM

So are you actually getting a code for the AFM? Or are you assuming that's what it is? The cars aren't prone to AFM problems, unless it's been neglected by someone or improperly cared for. Check the wiring, make sure it isn't loose or broken. Post up what codes you get when you read them.

cre · 01-17-2011, 10:38 PM

Sounds like limp mode.... not something a bad AFM is going to cause... try the knock sensor or its wiring. Doesn't sound like you've checked for codes, so do that first.

01-17-2011, 10:52 AM	#1
90toyturbo Stock Join Date: Jan 2011 Location: aurora colorado Posts: 2	looking at supra but has afm issues any ideas? So it drives but throws a check engine light randomly when it does the check engine light trick it wont go over 2000 rpm than it runs fine when the light is gone is this common? Should i get a new afm or is it common for the wires to come loose? Ive had tons of problems with my toyota pickups afm ive replaced it 4 times is it just a toyota thing to have bad ones?

01-17-2011, 09:29 PM	#3
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	So are you actually getting a code for the AFM? Or are you assuming that's what it is? The cars aren't prone to AFM problems, unless it's been neglected by someone or improperly cared for. Check the wiring, make sure it isn't loose or broken. Post up what codes you get when you read them. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

01-17-2011, 10:38 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Sounds like limp mode.... not something a bad AFM is going to cause... try the knock sensor or its wiring. Doesn't sound like you've checked for codes, so do that first. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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01-17-2011, 11:45 AM	#2
90toyturbo Stock Join Date: Jan 2011 Location: aurora colorado Posts: 2	Oh yeah and its a 90 7mgte motor if that makes a difference