I have 2001S-Type v8 and when it snows and is wet the car will just drop Rpms and almost stall for just a brief second then will be normal, you feel a sudden jerk like the transmission fell out, brought car in to dealer know codes no fix, same as transmission dealer no problem. Car runs like a dream when there is know snow, juststarted happening couple days ago, feels like something is shorting out when wet,but any help would greatly appreciated.

thanks in advance

 

coils getting moist.. when it snows or rains.. the coils dont set codes.. or it might be pcm getting wet.. under cowl passenger side under pollen filter

 

what is the cowl side and is it hard to get to also is the pcm usually covered.
thanks in advance

 

cowl is the black trim under whinshield .. hard plastic. not bad to get to. i wud lean more to the coils .. pcm are usually covered

 

I noticed water dripping in from the plastic, around the wiper arms, right onto the motor,I thought it was leaking onto something shorting it out

 

so i wud check there.. the coils get water on them and don't fire properly.. remove coil covers and see which one is wet.. there was a update coil cover you can buy.. usually the passenger side gets wet the most

 

Also the PCM is covered under the 8/80

 

where is the cooils located, sorry to be such a pain, just sick of spending money at the dealer

 

take off the V8 cover and under the right side of the intake tube there is a piece of plastic about 12 inches long by 2.5 inches that is held in by 6 .. 7mm bolts.. undo them and the cover comes off.. if the car runs good know i wud dry that area out.. then cilicone the cover shut

 

will do that thanks

 

Took off bothe sides and it appears to be dry so I guess next step is try pcm. Any other ideas how about under the car is there anything readily available to get wet and cause sudden jerk and loss of power

 

Did you look in trunk floor where spare tire is? See if full of water?

 

No water appears to be dry somewhat. Anyother ideas?

 

were do you live?

 

Burlington, ontario

 

hey im in toronto.. i guess you dint like budds lol ..

 

that year car was really bad for front harness failures.. corroded wires under the bumper or in the wheel arches.. you can have corrosion on a relay wire for the ecm of something like that .. that wud cause the jerking..