I have a 95 Mitsubi-shit Mirage S and I need help diagnosing an issue that is preventing me from driving the car.
Initial problem; I was coming off the freeway and stopped for traffic at an exit, after I started to accelerate the car started sputtering and violently idling until it stalled. My first thought was I ran it out of fuel. After getting gas in the tank (about 6 gallons) I turned the key on and off a few times trying to get the fuel pump to get pressure back in the lines and it would not start. Fuel pump is working like new.
The car still (a week later) cranks and sputters and refuses to run. Until recently 2 days ago to be exact the car would start and idle while it was cold, then stall out when it got warm. A day later I could start it and it would idle all night (forgot it was on and went to bed). I was able to put it into gear and it would idle roughly, but it wouldn’t die. Here is all it does to me:
Next day after stall on the exit ramp:
Starts when cold and will run until it reaches normal temp, stalls out when any amount of throttle is given, stalls when put into gear, will NOT restart until cool after a stall, idles rough and surges in RPMs unless any kind of electrical strain is on like lights, ac/heater fan etc…
2 days after:
Starts cold and runs to normal temp and continues to run until i shut it off, I can apply throttle gently and bring up RPMs to redline, to much throttle and it boggs out and will stall if not feathered, will idle in any gear until throttle is pressed…
2 days ago:
Starts cold with hesitation, idles rough unless electrical strain is on the engine, can drive in any gear if I keep throttle under 1/4’th, hesitates above 25 mph, will not re-start after a stall when warm, dies constantly when driving…
I have cleaned the throttle body, replaced injectors, replaced fuel filter, checked fuel pump to make sure it is keeping pressure in the lines, changed out to new plugs and wires, when hot after a stall I have tried poring cold water on injector rail and fuel line to see if it is v-locking (no affect) and when I pull the gas cap off after a run it releases pressure from the tank noticeably with a loud hiss. Distributor cap was pulled off and cleaned by a local shop.
Also to add, I tried smoging it recently and it failed the idle part by 47 points due to unburned fuel. Everything else passed with flying colors. I am thinking cat?
Is there any fix for this before I have to foot a shop bill???
Engine is a 1.5l
Tranny is 3 speed auto
Hood is Tin foil I’m pretty sure…
exhaust is still attached amazingly
and all wiper gaskets, blinker fluid, mufler bearings, headlight bearings, and duct taped windows have been serviced at appropriate dates.