[aviacionlight]

Hi. This is a wonderfull site thanks god i found it.
My windstar 2001 was runing almost fine, six months ago the check engine ligts on and 0171/0174 codes were present but stills working fine until the last two months, first start to hesitate at all speed ranges, check the codes again on auto zone and the trouble was two bad spark plug wires, i change it all wire set for a new one and new spark plugs too (autolite double platinum) at this point every thing looks ok but two days later the van star to run rough, here begins the nightmare.

When engine starts runs ok but when change to drive or reverse the idle speed becomes crazy up and down and go worst when a/c is on (on park position the engine runs almost fine) everything looks like the iac valve was wrong and i change it (dealer recomendation) but the trouble stills.

I try everything:
Remove the intake cover
Clean the egr ports
Check the egr valve
Clean all the sensor conections
Check all the vacum lines
Clean the maf sensor
Cange the battery
Change the iac valve
Change the pcv valve
The dealer says they do the tbs for the 0171/0174 codes but still fail.

Do you have any idea what's wrong?????????????

The other trouble is the transmision...... one year ago the van starts to change from 3 to 4 at very low speeds i use the o/d buton to correct the problem but now changes from 3 to 4 and hesitates to much goin back and fort, (no o/d light blinks) since the last year i note a burn smell on the engine compartement could be the transmision?
It is a relation betwen the engine stall trouble and the transmision?

Pd. Sorry for my english

Angel Galicia
Monterrey, Mex.