86subieXT

Adjust distributor timing back. If timing is good Meter the MAF Sensor. Meter the Thermoswitch sensor. check for any oil in intake pipes. Gap plugs down.

Im starting find alot of oil in the intercooler and even some spitting from the BPV. It's causing lots of missfiring and other problems. By my calculation i believe its coming from the turbo. Im posting this to get some info on rebuilding the stock turbo. My other option is to make a hybrid using another IHI VJ-11 turbo from a Mazda 626. mostly the same except for up pipe flange. Or a newer TD04 Whats my best option here?

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.

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?

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.

MAF cleaned out, TPS installed to specifications. no codes, but still struggles only upon wot.

yes, 4 wire were variable resistors. Ill check the adjustment upon re installation.

just pulled apart the TPS to clean and meter it. ive never seen a TPS like this before Here it is no throttle Here it is WOT And here is is everywhere in between How is this TPS only operating through continuity?

TPS is a likely candidate for this problem. I will test that competent tonight. Also plan on sweeping through the MAF and confirming proper readings to the FSM. Thanks for your input. very good forum here.

this problem happens every tank.

good info there for tuning. Now what can you tell me about hesitation under load? some sensor or operation is cutting out when the car is under load at operating temp.

Wow, sounds like you have a project on your hands. I personally am fighting to keep my ea82t engine running good. My intention is to tune it properly. Methanol injection forge boost controller and bps TMIC have been added. What do you recommend. [/img]

I was thinking what portion of the fuel injection system would cause that. MAF or TPS.

Those are all common things that ive checked or wouldnt apply since the problem is intermittent. Happens often at operating temps. runs better cold. Also worse with more load on the engine.

Yea i know. i could do it on a standalone but the whole purpose of the idea was to do it with a factory MPFI Well while i have your attention. does anyone know what causes loss of acceleration and hesitation? thermo switch was replaced, no codes at idle.