Engine running lean

SOURCE: 2 problems: disaperring antifreeze & rough idling

I'd hate to break this too you, but if you're both smelling burnt up antifreeze and loosing it at the same time. I'd definitely take a look at the exhaust. Start the motor and let it idle. Watch the exhaust for either water, or steam / whitish smoke. If you're seeing a lot of vapor after the engine is warmed up you're loosing anti-freeze into the engine itself. Most likely due to a blown head gasket or could be as bad as a cracked head (which the windstars were pretty good for), or even the chance of a cracked block.

If it was me, I'd take the van to a good mechanic and have them do a pressure test on the cooling system. If it's loosing pressure then it's definitely a problem. One major overheat can cause a blown head gasket or worse. So, definitely find the cause and problem there.

Also, as for the OBD reading a lean on bank 1, it could be from the O2 sensors reading water vapors in the exaust. It could be clouding a reading and causing such a problem.

Personally, as I've said, I'd run it to a good mechanic who can pressure test your cooling system. It definitely sounds like you have a blown head gasket to me. It could possibly be a cracked head, but more likely towards the gasket. Do the small test I told you with the exhaust. Let it idle and check the exhaust, then even hit the throttle and see if it shows then. If you're smelling anti-freeze out the tailpipe, it's definitely not a good sign.

(Water of course will cause this rough idle as well. It will hurt the combustion process and give you the rough idling.)

I hope this helps, and I hope it's not a major problem. But, I'd definitely find out if it's leaking water into the motor.

SOURCE: Bank 1 & 2 running lean

The lean condition is caused from the upper intake gaskets and isolation bolts not sealing properly due to time and poor sealing qualities from the factory ther was a service bulliten for this through ford to replace the gaskets,bolts,vaccum line,and lh side valve cover for this concern the oil was getting onto the rubber contaminating it causing a vaccum leak. If you never had the tsb done i would start there, also if there is high milleage on the vehicle i would also clean the maf sensor and resedt kam.

SOURCE: Check Engine Light On

have the 02 sensors checked

SOURCE: 2002 ford taurus with check engine code bank 1 and

You most likely have a big vacuum leak. PCV hose split or a bad Idle Air Control motor (IAC)

Testimonial: "i will try that thanks."

SOURCE: 1989 mustang gt 5.0 fuel

Was looking at posts and other sites. I take it that some relays are even under seats. Anyway, Apparently the ECU relay and the ECC relay are linked. When properly operating the ECC brain sends a signal to the ECC relay and the ground wire is tan/green. The brain can be throwing the signal and the relay terminals are not receiving the signals, so the relays cannot switch.

Although you have replaced some relays, you need to check your plugins for these 2 relays.