 Stuttering Issues....3sgte |
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 May 22, 2014 - 10:04 PM
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Enthusiast Joined Nov 12, '13 From detroit Currently Offline Reputation: 0 (0%)  |
I have a 3sgte in my Celica rev 2 JDM version from an MR2 Turbo. Could the AFM be causing my engine to buck hard when I go WOT? When I'm 1/2 throttle it runs as if I had it WOT all the way to redline its beautiful. I reset the ECU & it drives great then it will adjust after 10 mins then back to buck city.
-Cap/Rotor/Plugs replaced. Wires OTW -New Walbro 255 -Tried race gas -New Knk Snr -O2 snr is completely black & I will be replacing asap (BTW is there only supposed to be 1 wire going to the o2?) -AFR reads 13.20-13.80 on cold start then 14.50-15.00 after it warms up @ idle. 14.60-14.80 on cruise. 10.00 under WOT while bucking -Vac sits at 20-22 at idle -Boost is very responsive to throttle input. Spins 1st & 2nd on 1/2 throttle! It creeps to 10psi then peals off to 8psi towards redline. (3in EMS DP with 3in exhaust into 2.5 muffler) -Only running 8PSI anymore makes it stutter really bad. Any suggestions would be great.... |
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May 24, 2014 - 12:21 AM
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 Enthusiast  Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
Mine did something similar when the timing belt that I installed was off by a few teeth.
-------------------- 15PSI - 30MPG - Megasquirt Tuned
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