Second gear makes it die?

[chris91]

Okay this is weird. Occasionally the car would die when you come to a stop. I figured its the IACV and cleaned it out. I took the car for a ride tonight and its not doing it anymore. BUT, for some reason I put it down in 2nd while sitting there and it immediately dies. Im like, "WTF MATE??" So I try it again thinking it was just a fluke and sure enough, it dies. I try it with 1st and it doesnt do it. Just while sitting still and putting it into 2nd. Car runs perfectly fine other than that. Its not throwing any codes either. Buddy of mine thats a Ford tech said it could be the Transmission Range Switch shorting out??? Anyone have any ideas? Figured I would post here and maybe someone that had a little more Mark experience could chime in?

 

[lincolnboy]

When stopping is the car still warming up. Some guy have had the iac work after a cleaning some find out its still bad and have to buy a new one. I'd just buy a new one.

 

[chris91]

It would die when the car was hot or cold. It seems to have stopped dying after the cleaning though. I know the cleaning isnt a permanent fix for the IACV. The idle will jump down a little when coming to a stop, but not enough to kill it. But while sitting still IMMEDIATELY after putting it into second it will die. I just don't want to start throwing parts at it without confirming the problem lies within the IACV.

 

[DieselDan]

IAC... My car did the same thing, it was stuck shut. Does your car idle at really low RPMs?

 

[chris91]

Idles around 750-800. Doesn't seem to be TOO low. Cant be too sure though as you know how off factory Ford tachometer's can be. I just found it really odd that itll die when you put it in Second and not First or even Drive.

 

[lincolnboy]

Maybe a vac leak

 

[chris91]

Ima grab the carb cleaner and go check now. Dont think thats it though being how it only does it when you shift it to second. If it was a vacuum leak wouldnt it do it all the time?

**Edit**- Sprayed around everywhere and nothin.

 

[slowmkviii]

Mlps sounds right to me IMO
if you have someone with a scanner you can check it

 

[chris91]

Hmm after reading some on this it seems like it could possibly be that. The car does switch gears awfully fast. Like it you barely take off youll get to third REALLY quick. And you wont even be going over 25mph. My buddy that works at Ford has a few high dollar scanners so Im sure I could have him check that.


And thanks everyone thats been offering advise!