fixed the running rich problem

ddmcse · 05-02-2006, 10:56 AM

i would check the vsv switches on the intake side uner the intake
one is for fuel one is for egr

it's a simple conductivity test

Isphius · 05-02-2006, 11:53 AM

http://www.toyota-supra.info/forums/...ead.php?t=4448

It sounds like he is having the same problem. Im not very knowledgeable about turbos, but maybe you need to rebuild it? Because it sounds like the motor is running fine off boost. It could also be the wastegate stopped working and burned your turbo up. Or maybe your old afm went bad and caused something to break from too rich a mixture? and now thats why it seems the new one is bad too. That happens a lot, Sometimes you replace a part and it works fine, but you didnt fix it. And then it goes bad a few days or weeks later. Also did you see if you are leaking pressure/vaccum from anywhere? That will also cause a rich mixture, and sluggishness, and bad boost/power.

djalkyd · 05-04-2006, 04:31 AM

wow, how dumb do i feel... i am kind of embarrased to actually say what was really wrong with the car.

to make a long story short, i bought hard piping for the inner cooler from cool eeze and never installed the hard pipe from the turbo to inner cooler i just left it stock.

well the stock rubber piping had what i call a "ninja crack" in it. you know, a crack that is only there under boost. like a flap that opens up durring boost.

well this explains the rich problem, the excesive turbo spool up sound and the not so loud blow off valve.

i checked the piping so many times and neglected to check the stock piping at the turbo because i never took it off.

it is definately fixed now. i am back to 10psi of boost and the car is feeling extremely strong again.

thanks again to everyone who gave great advice.

05-02-2006, 10:56 AM	#1
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	i would check the vsv switches on the intake side uner the intake one is for fuel one is for egr it's a simple conductivity test __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

05-02-2006, 11:53 AM	#2
Isphius 500whp yet? Join Date: Nov 2005 Location: Long branch, NJ Posts: 1,006	http://www.toyota-supra.info/forums/...ead.php?t=4448 It sounds like he is having the same problem. Im not very knowledgeable about turbos, but maybe you need to rebuild it? Because it sounds like the motor is running fine off boost. It could also be the wastegate stopped working and burned your turbo up. Or maybe your old afm went bad and caused something to break from too rich a mixture? and now thats why it seems the new one is bad too. That happens a lot, Sometimes you replace a part and it works fine, but you didnt fix it. And then it goes bad a few days or weeks later. Also did you see if you are leaking pressure/vaccum from anywhere? That will also cause a rich mixture, and sluggishness, and bad boost/power. __________________ Yay the supra assistant is gone!!! WEEE!! Last edited by Isphius; 05-02-2006 at 11:55 AM.

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05-04-2006, 04:31 AM	#3
djalkyd 3" Exhaust Join Date: Jan 2006 Location: sacramento ca. Posts: 55	wow, how dumb do i feel... i am kind of embarrased to actually say what was really wrong with the car. to make a long story short, i bought hard piping for the inner cooler from cool eeze and never installed the hard pipe from the turbo to inner cooler i just left it stock. well the stock rubber piping had what i call a "ninja crack" in it. you know, a crack that is only there under boost. like a flap that opens up durring boost. well this explains the rich problem, the excesive turbo spool up sound and the not so loud blow off valve. i checked the piping so many times and neglected to check the stock piping at the turbo because i never took it off. it is definately fixed now. i am back to 10psi of boost and the car is feeling extremely strong again. thanks again to everyone who gave great advice.