What am I missing?

B0STED4_G

MEMBER
2000 TOYOTA CELICA
88,769 MILES

Veh hard to start cold, runs rough, cel comes on. Veh dtc p0300 random mis, p0301 to 304 mid cyl # 1.2.3.4, p0171 lean bank 1. Smoke tested found vac leak cyl 3-4 on intake mani, repl seals. Leak repaired, test drive same setting mis fires and leak code. Fuel pressure at 55 psi static injectors ohm 16.3 accross 1-4 and sound normal, cyl comp good 175 psi accross 1-4, noticed mass rearding grams per sec was extremly high at idle 6.7, shot in the dark replace mass now reading 2.0 at idle of 850 with no change in how veh runs. WoT mas reading above 120.00 short term trim at 19.7 long term at 44.5 running down the freeway, long term drops to 25.0 at idle. If im missing something as per info I have tons. Im stuck need help!

3 Replies

FIXITMR

MECHANIC
9,990 POSTS

Any chance injectors are plugged/gummed up?

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Monday, October 10th, 2011 AT 6:18 PM

B0STED4_G

MEMBER
2 POSTS

It is very possible! All injectors sound the same so probably not the issue but can check. Let's me make this note, once the car warms up it smooths out. If u drive the car and go WoT the car falls on it's face for 2sec then revs and has power as if it leans out the fattens back up and takes off. The fuel pressure and volume are within spec. What can cause the car to do this cold then nothing when warms up until u go WoT. Oh the coolant temp sensor ohms out in spec for ambient temp and corresponds with coolant temp when cold start all the way to operating temp. This is a magical car. I do believe it is the devil!