Spontaneous Idle Dropping

[Mo-Tang]

Car Info: 98 GT 5 Speed
Problem Description: Ever since I recently installed the Dallas Mustang Speed cal i have had a wierd dropping in RPMs when the car is idling. It never dies but it gets close. I havent noticed any performance reduction although it does seem to surge at times when driving. The rpms drop spontaneously about every 5-7 seconds or so. It happens when rolling to a stop(with the car in neutral) and when stopped. I believe the speed cal to be set up properly as my speedo is working and is accurate(or at least by as far as I can tell). Just curious as to see if anyone else has had a similar issue after installing the DM SpeedCal. Of if anyone can point me in a possible direction to starting finding this gremlin.

Thanks!
-Brian

 

[00VERT GT]

Welcome to the club

Check it out
http://forums.stangnet.com/showthread.php?t=435493

 

[Mo-Tang]

I saw that thread when i did a search...but i dont think my problem is electrical. I mean..it doesnt get anyworse or better with different accessories on. Its the weirdest thing i've ever seen...

 

[mrvax]

Give DM a call and ask them for advise. Also, a member here invented the SpeedCal. I believe his username is TriBlkCobra.

 

[Mo-Tang]

all right...i appreciate it.

 

[jeff1414]

my does that and i don't even have gears??????

 

[slvrbullIT]

same here, i dont have gears and mine does it too. i just learned to live with it because it never dies on me or anything.

 

[Mo-Tang]

Yeah..i guess it wouldnt bother me so much if it would have been doing it all along..but it just started so it kinda urks me..