1994 problem

[djmcgrath@hotma]

I have a 1994 mustang gt, it will run fine when cold, but after about 30 mins or so of driving it will start to run like crap, idle jumps, makes the od pop sound and sometimes will stall. I have an msd iginition module as well I have checked for vaccum leaks changed plugs wires set timing. im getting pretty stumped on this one....

 

[BlownFiveLiter]

Any codes?

 

[yukisho]

Like stang said, get the codes and it would be a good idea to clean your MAF too. A lot of times that can be part of the problem.

 

[JJ95GTID]

Could also be your HO2 sensor(s).

Sounds like once the engine temp comes up a sensor is causing erratic a/f adjustments.

Definately get the codes.