We have a 2000 MC SS with 3.8that recently began stalling at idle and lurching intermittently. Dealer found no codes and replaced MAF sensor with no luch. Another dealre replaced IAC motor and throttle position sensor also with no luck. The car always restarts.......any idea on what else could be worng?

 

 

lol prayin always helps me but doesnt really help with nething car related...always helps solve the internal issues tho

 

[align=center][/align][align=center]Sorry `Frank, that I have interrupted your post, but[/align][align=center]I believe prayers can help with any problem a person is[/align][align=center]confronted with. You have to remember, there are a lot[/align][align=center]of car owners asking for help, especially those[/align][align=center]FORD Guys (j/k),[/align][align=center]Patience is a Virtue : )[/align][align=center][/align][align=center][/align][align=center]I just get tired of that Space Kid bombing[/align][align=center]me with request, and have changed my Number.[/align][align=center][:-][/align][align=center]I still listen to everyone else : )[/align][align=center]Sure can't hurt [/align][align=center]Good Luck[/align][align=center][/align]

 

yah sry Frank but welcome to MCF! hopefully sum1 with more mechanical knowledge can help ya out...we have some pretty smart ppl runnin round here

 

I would have to say the IAC, thats about the only thing that wont throw a code. Did the dealer that installed the new one clean out the seat and throttle body before they put the new one in?
Amen

 

Not sure if they cleaned seat and throttle body??? I have seen some threads with similar issues that a new crack sensor corrected.........any thoughts

 

I had something similar going on with my firebird. Ended up being a loose spark plug wire not making a good connection. It would sometimes stall and lurch while just idiling and while driving sometimes would all of a sudden not go over 30mph. Not sure if this would throw a code or not on a monte, worth checking though.

 

I assume you mean crank sensor?
Maybe but [lurching] usally isnt a associated with a spark problem, stalling is and maybe the timing is being is tring to compinsate for it, But my first guess would be IAC. In most sevice manuals they tell you to replace with a KNOWN good sensor in the trouble shooting section, I don't know how to tell if a new one is a KNOWN good one but thats the best advice I can give.

 

One other thing that may or may be relevant............the day before this started there was water( from somehwere) dripping into passenger floorboard. wasn't heater core or plugged ac vent.................