naru Posted January 30, 2012 Share Posted January 30, 2012 I strongly suspect adjustment is identical to EA-81Ts.They are almost the same injection system. Idle contact opens at 2.5 degrees.Check at 1.5 degrees w/a .55mm feeler gauge. Make sure the idle switch is open at 2.5 degrees w/a .92mm feeler. Full contact closes at 32 degrees. Link to comment Share on other sites More sharing options...
MilesFox Posted January 30, 2012 Share Posted January 30, 2012 there should be a copper strip behind the plastic wheel that acts as a variable resistor of sorts. Link to comment Share on other sites More sharing options...
naru Posted January 30, 2012 Share Posted January 30, 2012 there should be a copper strip behind the plastic wheel that acts as a variable resistor of sorts. I believe you are confusing this TPS w/the later 4 wire version used w/the optical distys. Link to comment Share on other sites More sharing options...
86subieXT Posted January 30, 2012 Author Share Posted January 30, 2012 yes, 4 wire were variable resistors. Ill check the adjustment upon re installation. Link to comment Share on other sites More sharing options...
86subieXT Posted January 30, 2012 Author Share Posted January 30, 2012 MAF cleaned out, TPS installed to specifications. no codes, but still struggles only upon wot. Link to comment Share on other sites More sharing options...
naru Posted January 30, 2012 Share Posted January 30, 2012 Check the fuel pressure w/driving. Link to comment Share on other sites More sharing options...
86subieXT Posted January 30, 2012 Author Share Posted January 30, 2012 yes, 35-40psi. when it hesitates it feels like the car is missing. fuel pressure drops i let off, it comes back. fuel pump was replaced. problem still continues. Im guessing its not getting a proper reading from one the the MPFI components. Link to comment Share on other sites More sharing options...
naru Posted January 30, 2012 Share Posted January 30, 2012 So fuel pressure drops below 35 at WOT? If so,you found the problem. Should be 35 plus whatever boost is at. 35+7(max stock boost)=42psi Check the pump volume at 1.5 psi boost by putting 1.5 psi on the regulator vac line w/a hand pump. EA-81Ts flow 95 litres/hour at this pressure.Yours should be at least that much. I would confirm leaness by monitoring the O2 sensor signal. Link to comment Share on other sites More sharing options...
MilesFox Posted January 31, 2012 Share Posted January 31, 2012 I believe you are confusing this TPS w/the later 4 wire version used w/the optical distys. I was thinking that is a made my post. I almost mentioned it. Link to comment Share on other sites More sharing options...
86subieXT Posted February 6, 2012 Author Share Posted February 6, 2012 Thought I had fixed the problem with the MAF and tps rebuild but it's back. The car feels likes and sounds like its missing at wot. Especially bad on the highway at 80-100 kmph. When I ease the pedal the car will excelerate but if I step on it I won't go anywhere. I have some what of an idea why this is happening but it dosent make much sense. Anyone have an idea of there own? Link to comment Share on other sites More sharing options...
86subieXT Posted February 6, 2012 Author Share Posted February 6, 2012 When I do open it up and it misses I hear backfires from the exhaust. Klein really makes me thinks it's ignition not fuel related. But what I don't understand is why only at WOT. Link to comment Share on other sites More sharing options...
Turbone Posted February 6, 2012 Share Posted February 6, 2012 Could be a weak coil or transistor in the circuit. Link to comment Share on other sites More sharing options...
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