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questions

the ignition now that its been replaced the only thing it will do is all the lights on dash will work I just wont start....

Cable or wires from battery to alternator

Hi all,
We own a 1999 Mercury Mystique, 2.5L V6, 24 Valve DOHC.

Recently the car broke down and we're working through fixing some issues it's having, and we'd appreciate some advice on something we found. While looking at the intake manifold, we noticed raw, liquid fuel poor out of a tube on the driver side, closer to the firewall (top right of picture below), and similarly in some vacuum tubes.

A potentially related symptom we found is while replacing the exhaust O2 sensor, there was what we would call an excessive/heavy amount of carbon build up on the sensor.

Manifold: http://bldouglas.com/etc/car/1.jpg
Vacuum lines: http://bldouglas.com/etc/car/2.jpg

We have a home OBDII reader, and the car currently has these codes:
P0155 - O2 Sensor Heater Circuit
P0156 - O2 Sensor Circuit
P0401 - Exhaust Gas Recirculation Flow Insufficient Detected
P1520
P0171 - System Too Lean
P0302 - Cylinder 2 Misfire Detected
P0301 - Cylinder 1 Misfire Detected
P0161 - O2 Sensor Heater Circuit
P0174 - System Too Lean
P0303 - Cylinder 3 Misfire Detected

Any and all advice on what may be causing this or other issues and a starting place would be much appreciated! Thanks in advance!

Every time I drive off or go over 40 and have the ac on the car will pull back or slip does any body know why I have a mercury mystique 1999

was under the hood checking to see where a squeaking noise was coming from when the car stop starting !I kept trying to start it and then one of the ground cables started to smoke,I figured it was the starter I let it cool down and tried it again and it turned over slow but it did start, I then drove back to Dallas (300 miles)and it did not start again. I installed a new starter and it turned over good the first time and then started dragging and the ground started smoking again. I installed another starter and also a new ground and it did the same thing, It turned over good one time and then started dragging again and has not started, I can hear the fuel pump and it do seem to be getting gas and I don't know what else to try, can you PLEASE help me ?

do i have to pull trans

Are there anymore salvage yards. Other than Redwine.

It has also started to flash on and off while pressing down on the gas pedal. This is with the brake handle down or off. It flashes on and off.

I REPLACED THE INPUT SPEED SENSOR AND THE TRANSMISSION STILL JUMPS BACK AND FORTH IN GEARS.yOU WILL BE DRIVING ALONG AND THE TRANSMISSION WILL JUMP DOWN TO A LOWER GEAR AND THEN JUMP BACK UP TO THE HIGHER GEAR. IT FEELS IKE THE TRANSMISSION IS GOING TO FALL OUT. THE CODE READ THAT IT WAS THE AUTOMATIC SPEED SENSOR. BUT SOMEONE SAID SOMETHING ABOUT A TURBINE SENSOR. NOT SURE IF THEY ARE THE SAME.

it do it all the time

happens all the time regardless if the engine is hot or cold.

car has 102,000 plus miles and an automatic trans. any time i drive at speeds over 40 the engine rpm falls aprox 200-300 rpm momentarily and then goes back to where it was. it happens every 10 seconds like clockwork, and the rpm always falls then returns. this causes the transmission to jerk fairly hard. autozone obd II code reader shows po190 ( fuel rail pressure regulator circuit). the fuel pressure regulator is all plastic with three wires attached, 1 fuel line and 1 vac line.it mounts at the end of the fuel rail in line on the passenger side of engine. chilton manual, oreilys, autozone all show an all steel one with no wires attached.i unplugged the connector and started the engine, it ran rough. i bought a factory wire diagram for contour/mystique it doesnt show this part or the wires. ive tried driving with the o/d off, the cruise control on.ive pulled out the air cond relay,no change. checked the wiring on iac valve and several grounds for the pcm as well as engine grounds. checked igniton coil, primary was ok. secondary coils checked 11.2 ohms, should be 11.8-13.2.i unplugged the coil capacitor, changed fuel filter and put a new strainer in fuel tank, checked the plugs. they are the correct double platinum and gapped properly. car runs fine otherwise except starter cranks slow and on cold days it may take a couple tries to start it . after car is warm starts fine. this is my 16 yr old daughters car and i need it to be dependable for her. any help is appreciated.

idles fine but backfires and chokes out at acceleration. usually around 2000 rpms

how to remove the oil filter

my blower motor stopped working , I checked the fuse and don't think the motor itself is bad... any ideas on somewhere else to look?