Intermitant problem at wot

[drewzx3]

Every now and then my car will start cutting out at around 4000rpms when you are running it hard. It doesnt do itevery time and I dont know how to explain itother than cutting out. What all can I check to see what is causingthis?

 

[HISSIN50]

Plat plugs can cause this. A coil on the outs often starts to cut out at about 4K as well. Ditto a bad TFI.

I would start by pulling codes, if you haven't already.

Good luck.

 

[drewzx3]

I tried to pull codes and didnt get any.

 

[HISSIN50]

You didnt get any codes or you got 111?

 

[Chythar]

Just in case, the V8 engines have their computer hookup in the engine bay, behind the passenger shock tower. The plug under the dash is useless on the V8's - it's not wired in at all. It's only used on the V6 Mustangs.

 

[Stanger007]

I too would check out the plugs and ignition system. Around a .045 to .050 gap should suffice, as plugs age the gap will get a bit bigger on ya.

You hitting the track any time soon, we still need to meet up!

Wes

 

[drewzx3]

I will be at noproblem for pinks but I aint bringing the car. The plugs in it are bosch super plus HR10BCy's. Are they a platinum? There not very old.

 

[HISSIN50]

IIRC Super Plus plugs are copper.